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Minas Gerais, Brazili
Regional Level Types
Minas Gerais- not defined -
BrazilCountry

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Lavra do Alemão, Françisco Dumont, Minas Gerais

Minas Gerais, Brazil
Lavra do Alemão, Françisco Dumont, Minas Gerais

Minas Gerais, Brazil
Lavra do Alemão, Françisco Dumont, Minas Gerais

Minas Gerais, Brazil
Neighbouring regions:
Largest Settlements:
PlacePopulation
Belo Horizonte2,373,224 (2014)
Contagem627,123 (2012)
Uberlândia563,536 (2015)
Juiz de Fora470,193 (2013)
Ribeirão das Neves406,802 (2012)
Betim384,000 (2012)
Museums in region:


Minas Gerais is a state in Brazil and its name translated into English means "General Mines". Many of the localities and photos here on Mindat are for specimens that have come from several rather distinct geological settings in the state. Probably the best known of these are the pegmatite minerals like tourmaline, beryl, quartz etc that come from the pegmatites in the northwest granitic region of the state and whose center, business-wise if not geologically, is the town of Governador Valadares.
Another prolific producer of specimens are the quartz specimens that come from the sandstone formations in the northwest part of Minas Gerais. Their sale and distribution are centered in the town of Corinto, but there are many little towns in the sandstone region of the state that have quartz producing localities near them. Though there are many varieties of quartz from these sandstone deposits, they are usually sufficiently different from those produced by the granite pegmatites to the east that it is not hard to tell them apart. In this area is also the old colonial town of Diamantina that for perhaps 200 years was the center of diamond and gold production in Brazil.
In the southern part of the state is a big iron mining region that has produced some spectacular crystal specimens of hematite and countless tons of massive lapidary grade hematite. Though it would be possible for some of the mines to still produce lapidary grade hematite they don't want to sell in quantities of less than trains of 100 carloads of hematite. In Ouro Preto ("Black Gold"), the old colonial town where the School of Mines is located dealers can be found selling specimens of Imperial Topaz from deposits of that mineral near the town. Also nearby is the famous gold mine at Nova Lima that is well known to collectors for its fine specimens of siderite, pink apatite, and other minerals. All in all the state is well named.
[Rock Currier 2010]

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

540 valid minerals. 51 (TL) - type locality of valid minerals. 2 (FRL) - first recorded locality of unapproved mineral/variety/etc. 9 erroneous literature entries.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: [MinRec 6:282]
Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Localities: Reported from at least 9 localities in this region.
Aegirine
Formula: NaFe3+Si2O6
Aegirine-augite
Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
Alabandite
Formula: MnS
Reference: http://acd.ufrj.br/geologia/posgrad/area1_d.htm
Albite
Formula: Na(AlSi3O8)
Localities: Reported from at least 93 localities in this region.
Albite var: Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Albite var: Cleavelandite
Formula: Na(AlSi3O8)
Localities: Reported from at least 36 localities in this region.
Albite var: Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Albite var: Pericline
Formula: Na(AlSi3O8)
Reference: Walter R. Kellogg
'Albite-Anorthite Series'
Localities: Reported from at least 17 localities in this region.
'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Reference: Baretto & Fujimori (1986)
Alluaudite
Formula: (Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3
Almandine
Formula: Fe2+3Al2(SiO4)3
Localities: Reported from at least 11 localities in this region.
'Almandine-Pyrope Series'
'Almandine-Spessartine Series'
Almeidaite
Formula: PbZn2(Mn,Y)(Ti,Fe3+)18O37(OH,O)
Reference: Menezes Filho, L.A.D., Chukanov, N.V., Rastsvetaeva, R.K., Aksenov, S.M., Pekov, I.V., Chaves, M.L.S.C., Richards, R.P., Atencio, D., Brandão, P.R.G., Scholz, R., Krambrock, K., Moreira, R.L., Guimarães, F.S., Romano, A.W., Persiano, A.C., de Oliveira, L.C.A., Ardisson, J.D. (2015): Almeidaite, Pb(Mn,Y)Zn2(Ti,Fe3+)18O36(O,OH)2, a new crichtonite-group mineral, from Novo Horizonte, Bahia, Brazil. Mineralogical Magazine, 79, 269–283. [p. 270]
Althausite
Formula: Mg4(PO4)2(OH,O)(F,☐)
Alunite
Formula: KAl3(SO4)2(OH)6
Amblygonite
Formula: LiAl(PO4)F
Localities: Reported from at least 8 localities in this region.
'Amblygonite-Montebrasite Series'
Localities: Reported from at least 9 localities in this region.
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Analcime
Formula: Na(AlSi2O6) · H2O
Anatase
Formula: TiO2
Localities: Reported from at least 16 localities in this region.
'Ancylite'
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.; Traversa, G., Gomes, C. B., Brotzu, P., Buraglini, N., Morbidelli, L., Principato, M. S., ... & Ruberti, E. (2001). Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil). Anais da Academia Brasileira de Ciências, 73(1), 71-98.; Berger, V.I., Singer, D.A., and Orris, G.J., 2009, Carbonatites of the world, explored deposits of Nb and REE; database and grade and tonnage models: U.S. Geological Survey Open-File Report 2009-1139, 17 p. and database.
Ancylite-(Ce)
Formula: CeSr(CO3)2(OH) · H2O
Ancylite-(La)
Formula: LaSr(CO3)2(OH) · H2O
Andalusite
Formula: Al2(SiO4)O
Andradite
Formula: Ca3Fe3+2(SiO4)3
Andradite var: Melanite
Formula: Ca3Fe3+2(SiO4)3
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139; Berger, V.I., Singer, D.A., and Orris, G.J., 2009, Carbonatites of the world, explored deposits of Nb and REE; database and grade and tonnage models: U.S. Geological Survey Open-File Report 2009-1139, 17 p. and database.
Anglesite
Formula: PbSO4
Anhydrite
Formula: CaSO4
Reference: J.C. Bridges, M.M. Grady (2000) Evaporite mineral assemblages in the nakhlite (martian) meteorites. Earth and Planetary Science Letters 176:267-279
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Localities: Reported from at least 13 localities in this region.
Anorthite
Formula: Ca(Al2Si2O8)
Anorthite var: Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: Jour. of South American Earth Sci. 15:709–723
Anthophyllite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
'Anthosiderite'
Reference: Hausmann, J. Fr. L. and Wöhler, F. (1841): Ueber den Anthosiderit, eine neue Mineral-Species aus Brasilien. Journal für Praktische Chemie. 22, 412–415
Antimony
Formula: Sb
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
'Apatite'
Localities: Reported from at least 40 localities in this region.
Aragonite
Formula: CaCO3
Arfvedsonite
Formula: [Na][Na2][Fe2+4Fe3+]Si8O22(OH)2
Arrojadite-(KFe)
Formula: {KNa}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2
Arrojadite-(PbFe) (TL)
Formula: {Pb◻}{Fe2+◻}{Ca}{Na2◻}{Fe2+13}{Al}(PO4)11(HPO4)(OH)2
Type Locality:
Reference: Chopin, C., Oberti, R., Cámara, F. (2006): The arrojadite enigma: II. Compositional space, new members and nomenclature of the group. American Mineralogist, 91, 1260-1270
Arsenopalladinite (TL)
Formula: Pd8(As,Sb)3
Reference: Canadian Mineralogist: 15: 70-73; Chem. Index of Minerals (1955) p. 23 and 339; Mineralogical Magazine(1974): 39, 528-543
Arsenopyrite
Formula: FeAsS
Localities: Reported from at least 19 localities in this region.
Astrophyllite
Formula: K2NaFe2+7Ti2Si8O28(OH)4F
Atencioite (TL)
Formula: Ca2Fe2+3Mg2Be4(PO4)6(OH)4 · 6H2O
Reference: Chukanov, N.V., Rastsvetaeva, R.K., Möckel, St., Zadov, A.E., and Levitskaya, L.A. (2006) The roscherite group and its new representative member atencioite, Ca2Fe2+□Mg2Fe2+2Be4(PO4)6(OH)4•6H2O. New Data on Minerals, 41,18-25; http://www.universia.com.br/materia/materia.jsp?materia=2964
Atheneite (TL)
Formula: Pd2As0.75Hg0.25
Reference: Mineralogical Magazine(1974) 39, 528-543
Augelite
Formula: Al2(PO4)(OH)3
Description: thin veinlets in frondelite
Reference: Cassedanne, J.P. & Baptista, A. (1999): Famous Mineral Localities: The Sapucaia Pegmatite Minas Gerais, Brazil. Mineralogical Record, 30: 347-360 + 365
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Augite var: Soda-Augite
Reference: Revista Brasileira de Geociências 23(4):388-399
Auricupride
Formula: Cu3Au
Reference: Cabral A, Galbiatti H (2014)Platinum minerals from the Fazendão hematite-ore mine, Quadrilátero Ferrífero of Minas Gerais, Brazil. 21 st meeting of the International Mineralogical Association. p 102
Aurostibite
Formula: AuSb2
Reference: Oberthür, T. and Weiser, T. W. (2008): Gold-bismuth-telluride-sulphide assemblages at the Viceroy Mine, Harare-Bindura-Shamva greenstone belt, Zimbabwe. Mineralogical Magazine 72, 953-970. [contains also data on Passagem de Mariana Mine]
Autunite
Formula: Ca(UO2)2(PO4)2 · 11H2O
Localities: Reported from at least 7 localities in this region.
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: Ricardo Scholz information
Baddeleyite
Formula: ZrO2
Localities: Reported from at least 6 localities in this region.
Barbosalite (TL)
Formula: Fe2+Fe3+2(PO4)2(OH)2
Localities: Reported from at least 7 localities in this region.
Habit: earthy massive; jet black small crystals; fine-grained layer
Colour: dark blue-green, Jet -black
Description: - Dark bluegreen layer at boundary between heterosite and triphylite. - As earthy masses surrounding hureaulite crystals. - Jet-black (often twinned )crystals
Reference: Science (1954): 119, 739.; Lindberg, M.L. and Pecora, W.T. (1955) Tavorite and barbosalite, two new phosphate minerals from Minas Gerais, Brazil. American Mineralogist 40, 952-966.
Baryte
Formula: BaSO4
Localities: Reported from at least 12 localities in this region.
Barytocalcite
Formula: BaCa(CO3)2
Reference: Traversa, G., Gomes, C. B., Brotzu, P., Buraglini, N., Morbidelli, L., Principato, M. S., ... & Ruberti, E. (2001). Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil). Anais da Academia Brasileira de Ciências, 73(1), 71-98.; Berger, V.I., Singer, D.A., and Orris, G.J., 2009, Carbonatites of the world, explored deposits of Nb and REE; database and grade and tonnage models: U.S. Geological Survey Open-File Report 2009-1139, 17 p. and database.
'Bastnäsite'
Reference: Baretto & Fujimori (1986)
Bastnäsite-(Ce)
Formula: Ce(CO3)F
Batisite
Formula: BaNaNaTi2(Si4O12)O2
Reference: Andrezza Azzi, Daniel Atencio, Marcelo Andrade, Reynaldo Contreira (2018) Crystal-chemistry of Y-poor hainite-(Y) from Poços de Caldas alkaline complex, Minas Gerais, Brazil. in abstracts of the 22nd IMA Meeting Melbourne p 226
Bearsite
Formula: Be2(AsO4)(OH) · 4H2O
Reference: Sergio Varvello collection
Bementite
Formula: Mn7Si6O15(OH)8
Bendadaite
Formula: Fe2+Fe3+2(AsO4)2(OH)2 · 4H2O
Reference: U. Kolitsch, D. Atencio, N. V. Chukanov, N. V. Zubkova, L. A. D. Menezes Filho, J. M. V. Coutinho, W. D. Birch, J. Schlüter, D. Pohl, A. R. Kampf, I. M. Steele, G. Favreau, L. Nasdala, S. Möckel, G. Giester and D. Yu. Pushcharovsky (2010): Bendadaite, a new iron arsenate mineral of the arthurite group. Mineralogical Magazine 74, 469-486.
Benjaminite
Formula: Ag3Bi7S12
Reference: Oberthür, T. and Weiser, T. W. (2008): Gold-bismuth-telluride-sulphide assemblages at the Viceroy Mine, Harare-Bindura-Shamva greenstone belt, Zimbabwe. Mineralogical Magazine 72, 953-970. [contains also data on Passagem de Mariana Mine]
Beraunite
Formula: Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Bergslagite
Formula: CaBeAsO4(OH)
Reference: Luiz Alberto Dias Menezes Filho, Mario Luiz de Sá Carneiro Chaves, Coralie Heinis Dias, Daniel Atencio (2016): Recent mineral discoveries in the Coronel Murta, Taquaral, and Medina pegmatite fields, northeastern Minas Gerais, Brazil. REM - Int. Eng. J. 69, 301-307. [http://www.scielo.br/pdf/remi/v69n3/2448-167X-remi-69-03-0301.pdf].; Knut Edvard Larsen collection # MM-6229 (Ex-Luiz Menezes specimen)
Berlinite
Formula: AlPO4
Bermanite
Formula: Mn2+Mn3+2(PO4)2(OH)2 · 4H2O
Localities: Reported from at least 7 localities in this region.
Berthierine
Formula: (Fe2+,Fe3+,Al)3(Si,Al)2O5(OH)4
Reference: Atencio et al. (1999) Canadian Mineralogist 37, 91-98.
Berthierite
Formula: FeSb2S4
Bertrandite
Formula: Be4(Si2O7)(OH)2
Localities: Reported from at least 6 localities in this region.
Beryl
Formula: Be3Al2(Si6O18)
Localities: Reported from at least 77 localities in this region.
Beryl var: Alkali-beryl
Formula: Be3Al2(Si6O18)
Reference: Revista Brasileira de Geociências 31(l):89-94
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Localities: Reported from at least 32 localities in this region.
Beryl var: Blue Beryl (Maxixe)
Formula: Be3Al2(Si6O18)
Beryl var: Emerald
Formula: Be3Al2(Si6O18)
Localities: Reported from at least 8 localities in this region.
Beryl var: Goshenite
Formula: Be3Al2(Si6O18)
Beryl var: Heliodor
Formula: Be3Al2(Si6O18)
Localities: Reported from at least 8 localities in this region.
Beryl var: Morganite
Formula: Be3Al2(Si6O18)
Localities: Reported from at least 15 localities in this region.
Beryllonite
Formula: NaBePO4
Localities: Reported from at least 11 localities in this region.
Beusite
Formula: Mn2+Mn2+2 (PO4)2
Reference: Baijot, M., Hatert, F., Dal Rio, F. & Philipo, S. (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. Canadian Mineralogist 52, 373-397.
Bílinite
Formula: Fe2+Fe3+2(SO4)4 · 22H2O
Reference: Waber et al. (1992) Jour. Geochemical Explor. 45, 53-112; WABER, N., SCHORSCHER, H.D., & PETERS, T. (1992) Hydrothermal and supergene uranium mineralization at the Osamu Utsumi mine, Poços de Caldas, Minas Gerais, Brazil. Journal of Geochemical Exploration, 45, 53-112.
'Bindheimite'
Formula: Pb2Sb2O6O
Reference: USGS Professional Paper 341B
'Biotite'
Localities: Reported from at least 28 localities in this region.
Birnessite
Formula: (Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Bismite
Formula: Bi2O3
Reference: Berger, V.I., Singer, D.A., and Orris, G.J., 2009, Carbonatites of the world, explored deposits of Nb and REE; database and grade and tonnage models: U.S. Geological Survey Open-File Report 2009-1139, 17 p. and database.
Bismuth
Formula: Bi
Localities: Reported from at least 6 localities in this region.
Bismuthinite
Formula: Bi2S3
Bismutite
Formula: (BiO)2CO3
Reference: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 261; Mineralogical Record: 32: 416.
Bityite
Formula: LiCaAl2(AlBeSi2O10)(OH)2
Reference: Fernando R.M. Pires and A. Raphael Cabral (1998) The Volta Grande pegmatites, Minas Gerais, Brazil: an example of rare-element granitic pegmatites exceptionally enriched in lithium and rubidium: Discussion. The Canadian Mineralogist, 36, 1157-1158.
Böhmite
Formula: AlO(OH)
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.
Bornite
Formula: Cu5FeS4
Bournonite
Formula: PbCuSbS3
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Brandãoite (TL)
Formula: BeAl2(PO4)2(OH)2(H2O)5
Type Locality:
Reference: Menezes, L., Chaves, M.L.S.C., Cooper, M.A., Ball, N., Abdu, Y., Sharp, R., Hawthorne, F.C. and Day, M. (2017) Brandãoite, IMA 2016-071a. CNMNC Newsletter No. 39, October 2017, page 1283; Mineralogical Magazine: 81: 1279–1286.
Brannerite
Formula: UTi2O6
'Bravoite'
Formula: (Fe,Ni)S2
Reference: Brenner et al (1990) Econ Geol 85:904-920
Brazilianite (TL)
Formula: NaAl3(PO4)2(OH)4
Localities: Reported from at least 14 localities in this region.
Habit: Narrow prism zone and elongated along [100]
Colour: pale to deep greenish yellow; Golden yellow
Description: largest crystal found weighed 2 kg
Reference: Cassedanne, J.P. (1983): Famous mineral localities: The Córrego Frio mine and vicinity, Minas Gerais, Brazil. Mineralogical Record, 14 (4): 227-237; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 911; Mineralogical Record: 14: 233; Rocks & Minerals (1988): 63: 42.
Britholite-(Ce)
Formula: (Ce,Ca)5(SiO4)3OH
'Britholite Group'
Formula: (REE, Ca)5[(Si,P)O4]3X
Reference: Andrezza Azzi, Daniel Atencio, Marcelo Andrade, Reynaldo Contreira (2018) Crystal-chemistry of Y-poor hainite-(Y) from Poços de Caldas alkaline complex, Minas Gerais, Brazil. in abstracts of the 22nd IMA Meeting Melbourne p 226
'Britholite-(La)'
Formula: Ca2(La,Ce,Ca)3(SiO4,PO4)3(OH,F)
Reference: Azzi, Andrezza de Almeida (2017) Rare Minerals from Poços de Caldas, MG
Brookite
Formula: TiO2
'Burangaite-Matioliite Series'
Description: 2 crystals analyzed by Atencio et al. (2006)) was found to be zoned to more Fe-rich compositions with an Fe2+:Mg ratio of approximately 1:1, corresponding to an intermediate member of the burangaite-matioliite solid-solution series
Reference: Atencio, D., Coutinho, J.M.V., Mascarenhas, Y.P., Ellena, J. (2006): Matioliite, the Mg-analog of burangaite, from Gentil mine, Mendes Pimentel, Minas Gerais, Brazil, and other occurrences. American Mineralogist, 91, 1932-1936
Burbankite
Formula: (Na,Ca)3(Sr,Ba,Ce)3(CO3)5
Bütschliite
Formula: K2Ca(CO3)2
Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Calcioancylite-(Ce)
Formula: (Ce,Ca,Sr)CO3(OH,H2O)
Calcite
Formula: CaCO3
Localities: Reported from at least 27 localities in this region.
Calcite var: Iceland Spar
Formula: CaCO3
Reference: various added photos
'Caldasite'
Calzirtite
Formula: CaZr3TiO9
Cancrinite
Formula: (Na,Ca,☐)8(Al6Si6O24)(CO3,SO4)2 · 2H2O
Carbocernaite
Formula: (Ca,Na)(Sr,Ce,Ba)(CO3)2
Reference: Traversa, G., Gomes, C. B., Brotzu, P., Buraglini, N., Morbidelli, L., Principato, M. S., ... & Ruberti, E. (2001). Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil). Anais da Academia Brasileira de Ciências, 73(1), 71-98.
Carlosbarbosaite (TL)
Formula: (UO2)2Nb2O6(OH)2 · 2H2O
Type Locality:
Reference: Atencio, D., Roberts, A.C., Cooper, M.A., Menezes Filho, L.A.D., Coutinho, J.M.V., Stirling, J.A.R., Ball, N.A., Moffatt, E., Chaves, M.L.S.C., Brandaõ, P.R.G. and Romano, A.W. (2010) Carlosbarbosaite, IMA 2010-047. CNMNC Newsletter No. 7, February 2010, page 28; Mineralogical Magazine, 75, 27-31; D. Atencio, A. C. Roberts, M. A. Cooper, L. A. D. Menezes Filho, J. M. V. Coutinho, J. A. R. Stirling, K. E. Venance, N. A. Ball, E. Moffatt, M. L. S. C. Chaves, P. R. G. Brandão, and A. W. Romano (2012): Carlosbarbosaite, ideally (UO2)2Nb2O6(OH)2•2H2O, a new hydrated uranyl niobate mineral with tunnels from Jaguaraçu, Minas Gerais, Brazil: description and crystal structure. Mineralogical Magazine, 76, 75-90.
Cassiterite
Formula: SnO2
Localities: Reported from at least 30 localities in this region.
Catapleiite
Formula: Na2Zr(Si3O9) · 2H2O
Reference: ATENCIO, D., COUTINHO, J.M.C., ULBRICH, M.N.C., VLACH, S.R.F., RASTVETAEVA, R.K. & PUSHCHAROVSKY, D.Yu. (1999) Hainite from Poços de Caldas, Minas Gerais, Brazil. Canadian Mineralogist, 37, 91-98.
Cavoite
Formula: CaV4+3O7
Description: On-line version of Handbook page (http://rruff.info/doclib/hom/cavoite.pdf) is in fact that of cerianite-(Ce).
Reference: Handbook of Mineralogy
Celadonite
Formula: K(Mg,Fe2+)Fe3+(Si4O10)(OH)2
Reference: Traversa, G., Gomes, C. B., Brotzu, P., Buraglini, N., Morbidelli, L., Principato, M. S., ... & Ruberti, E. (2001). Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil). Anais da Academia Brasileira de Ciências, 73(1), 71-98.
Celsian
Formula: Ba(Al2Si2O8)
Reference: Dr Jaroslav Hyrsl specimen, 2-2012,
Cerianite-(Ce)
Formula: (Ce4+,Th)O2
Reference: Baretto & Fujimori (1986)
Cerussite
Formula: PbCO3
Reference: [MinRec 25 No.3]
Césarferreiraite (TL)
Formula: Fe2+ Fe3+2(AsO4)2(OH)2·8H2O
Reference: Scholz, R., Chukanov, N. V., Menezes Filho, L. A., Atencio, D., Lagoeiro, L., Belotti, F. M., ... & Pekov, I. (2014). Césarferreiraite, Fe2+ Fe23+ (AsO4) 2 (OH) 2· 8H2O, from Eduardo mine, Conselheiro Pena, Minas Gerais, Brazil: Second arsenate in the laueite mineral group. American Mineralogist, 99(4), 607-611.
Chalcocite
Formula: Cu2S
Chalcophyllite
Formula: Cu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O
Reference: Rob Lavinsky specimen
Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 16 localities in this region.
Chalcosiderite
Formula: CuFe3+6(PO4)4(OH)8 · 4H2O
Reference: Luiz Alberto Dias Menezes,Fo.
Chamosite
Formula: (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Cheralite
Formula: CaTh(PO4)2
Chernovite-(Y)
Formula: Y(AsO4)
Reference: [Mineralogical Record - Vol 25 No.3]
Childrenite
Formula: Fe2+Al(PO4)(OH)2 · H2O
Localities: Reported from at least 13 localities in this region.
'Childrenite-Eosphorite Series'
Chlorapatite
Formula: Ca5(PO4)3Cl
Chlorbartonite
Formula: K6Fe24S26(Cl,S)
Reference: Andrezza Azzi, Daniel Atencio, Marcelo Andrade, Reynaldo Contreira (2018) Crystal-chemistry of Y-poor hainite-(Y) from Poços de Caldas alkaline complex, Minas Gerais, Brazil. in abstracts of the 22nd IMA Meeting Melbourne p 226
'Chlorite Group'
Localities: Reported from at least 28 localities in this region.
Chloritoid
Formula: (Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Reference: USGS Professional Paper 341B
Chrombismite
Formula: Bi16CrO27
Reference: Gunnar Färber
Chromite
Formula: Fe2+Cr3+2O4
Localities: Reported from at least 9 localities in this region.
Chromite var: Titaniferous Chromite
Formula: Fe2+Cr3+2O4
Reference: Steele, I. M., & Smith, J. V. (1976). Mineralogy of the Ibitira eucrite and comparison with other eucrites and lunar samples. Earth and Planetary Science Letters, 33(1), 67-78.
'Chromium-dravite'
Formula: Na(Mg3)Cr3+6(Si6O18)(BO3)3(OH)3(OH)
Description: Extremely unlikely occurrence of a chromium-bearing tourmaline in a granite pegmatite. The statements in Min Rec. 33:215 are insufficient to accept this identification. Optics, specific gravity, and "gemological techniques" can not be accepted as conclusive proof. Quantitative chemical analyses are necessary.
Reference: erroneously reported [MinRec 33:209]
Chrysoberyl
Formula: BeAl2O4
Localities: Reported from at least 14 localities in this region.
Chrysoberyl var: Alexandrite
Formula: BeAl2O4
Localities: Reported from at least 9 localities in this region.
Chrysotile
Formula: Mg3(Si2O5)(OH)4
Churchite-(Y)
Formula: Y(PO4) · 2H2O
Reference: [Mineralogical Record - Vol 25 No.3]
Cinnabar
Formula: HgS
Claudetite
Formula: As2O3
'Clays'
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Clinoenstatite
Formula: MgSiO3
Reference: Jour. of South American Earth Sci. 15:709–723
Clinoferrosilite
Formula: Fe2+SiO3
Reference: Jour. of South American Earth Sci. 15:709–723
'Clinopyroxene Subgroup'
Clino-suenoite
Formula: □{Mn2+2}{Mg5}(Si8O22)(OH)2
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Cobaltite
Formula: CoAsS
'Coeruleolactite'
Reference: Cassedanne, J.P & J.O. (1980): Famous mineral localities: The Cruzeiro mine, past and present. Mineralogical Record 11: 363-367 +370
Coesite
Formula: SiO2
Coffinite
Formula: U(SiO4) · nH2O
Collinsite
Formula: Ca2Mg(PO4)2 · 2H2O
Reference: Neil Hubbard specimen
Columbite-(Fe)
Formula: Fe2+Nb2O6
Localities: Reported from at least 9 localities in this region.
'Columbite-(Fe)-Columbite-(Mn) Series'
Localities: Reported from at least 9 localities in this region.
'Columbite Group'
Reference: Baijot, M., Hatert, F., Dal Rio, F. & Philipo, S. (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. Canadian Mineralogist 52, 373-397.
Columbite-(Mn)
Formula: Mn2+Nb2O6
Reference: Luis Menezes
'Columbite-Tantalite'
Localities: Reported from at least 9 localities in this region.
Cookeite
Formula: (Al2Li)Al2(AlSi3O10)(OH)8
Localities: Reported from at least 8 localities in this region.
Coombsite
Formula: K(Mn,Fe,Mg)13(Si,Al)18O42(OH)14
Reference: Gunnar Färber Minerals
Copper
Formula: Cu
Cordierite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Cordierite var: Iolite
Formula: (Mg,Fe)2Al3(AlSi5O18)
Reference: Karel Bal Collection
Correianevesite (TL)
Formula: Fe2+Mn2+2(PO4)2 · 3H2O
Type Locality:
Reference: http://www.mindat.org/mesg-25-290977.html; Chukanov, N.V., Scholz, R., Zubkova, N.V., Pekov, I.V., Belakovskiy, D.I., Van, K.V., Lagoeiro, L., Graça, L.M., Krambrock, K., de Oliveira, L.C.A., Menezes Filho, L.A.D., Sa Carneiro Chaves, M.L., Pushcharovsky, D.Y. (2014): Correianevesite, Fe2+Mn2+2(PO4)2·3H2O, a new reddingite-group mineral from the Cigana mine, Conselheiro Pena, Minas Gerais, Brazil. American Mineralogist, 99, 811-816
Corundum
Formula: Al2O3
Cosalite
Formula: Pb2Bi2S5
Reference: Oberthür, T. and Weiser, T. W. (2008): Gold-bismuth-telluride-sulphide assemblages at the Viceroy Mine, Harare-Bindura-Shamva greenstone belt, Zimbabwe. Mineralogical Magazine 72, 953-970. [contains also data on Passagem de Mariana Mine]
Coutinhoite (TL)
Formula: ThxBa(1-2x)(UO2)2Si5O13 · (H2O)1+y (0 < x < 0.5 and 0 < y < (2+x))
Type Locality:
Reference: American Mineralogist (2004): 89(5-6): 721-724.
Covellite
Formula: CuS
Localities: Reported from at least 7 localities in this region.
Crandallite
Formula: CaAl3(PO4)(PO3OH)(OH)6
Localities: Reported from at least 6 localities in this region.
Crichtonite
Formula: Sr(Mn,Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH)38
Crocoite
Formula: PbCrO4
Cryptomelane
Formula: K(Mn4+7Mn3+)O16
Cubanite
Formula: CuFe2S3
Cummingtonite
Formula: ☐{Mg2}{Mg5}(Si8O22)(OH)2
Cyrilovite
Formula: NaFe3+3(PO4)2(OH)4 · 2H2O
Localities: Reported from at least 9 localities in this region.
Datolite
Formula: CaB(SiO4)(OH)
Reference: Sergio Varvello collection
Daubréelite
Formula: Fe2+Cr3+2S4
Reference: Isa, J., Ma, C., & Rubin, A. E. (2016, March). Joegoldsteinite: A New Sulfide Mineral (MnCr2S4) from the IVA Iron Meteorite, Social Circle. In Lunar and Planetary Science Conference (Vol. 47, p. 1813).
Derbylite (TL)
Formula: Fe3+4Ti3Sb3+O13(OH)
Type Locality:
Reference: Mineralogical Magazine (1895): 11: 85; Mineralogical Magazine (1897): 11: 176; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1026.; Hussak and Prior (1900) Mineralogical Magazine: 12: 244.
Descloizite
Formula: PbZn(VO4)(OH)
Reference: G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
Diamond
Formula: C
Localities: Reported from at least 45 localities in this region.
Dickite
Formula: Al2(Si2O5)(OH)4
Reference: Atencio D, Carvalho F M S, Matioli P A (2004) Coutinhoite, a new thorium uranyl silicate hydrate, from Urucum Mine, Galiléia, Minas Gerais, Brazil. American Mineralogist 89, 721-724
Diopside
Formula: CaMgSi2O6
Localities: Reported from at least 13 localities in this region.
Diopside var: Chromian Diopside
Formula: Ca(Mg,Cr)Si2O6
Reference: Rob Lavinsky
'Diopside-Hedenbergite Series'
Reference: Jour. of South American Earth Sci. 15:709–723
Dolomite
Formula: CaMg(CO3)2
Localities: Reported from at least 21 localities in this region.
Dolomite var: Ferroan Dolomite
Formula: Ca(Mg,Fe)(CO3)2
Dravite
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Dufrénite
Formula: Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
Dukeite (TL)
Formula: Bi3+24Cr6+8O57(OH)6 · 3H2O
Type Locality:
Reference: [MinRec 32:416]
Eckermannite ?
Formula: NaNa2(Mg4Al}Si8O22(OH)2
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities: Reported from at least 59 localities in this region.
'Elbaite-Schorl Series'
Reference: various added photos
'Electrum'
Formula: (Au, Ag)
Reference: Márquez, M. et al. (2006): Process mineralogy of bacterial oxidized gold ore in São Bento Mine (Brasil). Hydrometallurgy 83, 114-123.
Eleonorite
Formula: Fe3+6(PO4)4O(OH)4 · 6H2O
Reference: IMA nomenclature revision 2015 reinstated eleonorite as the complelely ferric domininat member of the beraunite group
Eosphorite
Formula: Mn2+Al(PO4)(OH)2 · H2O
Localities: Reported from at least 19 localities in this region.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Localities: Reported from at least 10 localities in this region.
Epsomite
Formula: MgSO4 · 7H2O
Reference: Rocks & Min.: 63:43.
Ernstite
Formula: (Mn2+,Fe3+)Al(PO4)(OH,O)2 · H2O
Euclase (TL)
Formula: BeAl(SiO4)(OH)
Localities: Reported from at least 7 localities in this region.
Reference: [MinRec 20:230]
Eudialyte
Formula: Na15Ca6(Fe2+,Mn2+)3Zr3[Si25O73](O,OH,H2O)3(OH,Cl)2
Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Faheyite (TL)
Formula: Be2Mn2+Fe3+2(PO4)4 · 6H2O
Type Locality:
Reference: Lindberg & Murata (1953): Faheyite, a new phosphate mineral from the Sapucaia pegmatite mine, Minas Gerais, Brazil. American Mineralogist. 38, 263-270, 349; Rocks & Minerals: 62: 318.
Fairfieldite
Formula: Ca2Mn2+(PO4)2 · 2H2O
Fayalite
Formula: Fe2+2SiO4
'Fayalite-Forsterite Series'
Localities: Reported from at least 14 localities in this region.
'Feldspar Group'
Localities: Reported from at least 11 localities in this region.
'Feldspar Group var: Perthite'
Localities: Reported from at least 6 localities in this region.
Ferberite
Formula: FeWO4
Fergusonite-(Y)
Formula: YNbO4
Reference: Ricardo Augusto Cipriano Scholz. UFOP (Federal University of Ouro Preto, Brazil); Fernando Brederodes Collection
Ferrihydrite
Formula: Fe3+10O14(OH)2
Ferrimolybdite
Formula: Fe2(MoO4)3 · nH2O
Reference: CÂNDIDO FILHO, M., SCHOLZ, R., ŽIGOVEČKI GOBAC, Ž., BELOTTI, F.M. & BERMANEC, V.. FERRIMOLYBDITE IN DIVINO DE UBÁ PEGMATITE, MINAS GERAIS, BRAZIL. Acta Mineralogica-Petrographica, Abstract Series, Szeged, Vol. 7, 2012
Ferrisicklerite
Formula: Li1-x(Fe3+xFe2+1-x)PO4
Ferristrunzite
Formula: Fe3+Fe3+2(PO4)2(OH)3 · 5H2O
Reference: Baijot, M., Hatert, F., Dal Rio, F. & Philipo, S. (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. Canadian Mineralogist 52, 373-397.
Ferro-actinolite
Formula: ☐{Ca2}{Fe2+5}(Si8O22)(OH)2
Reference: Revista Brasileira de Geociências 30(2):306-310
Ferrobustamite
Formula: CaFe2+(Si2O6)
Reference: Andrezza Azzi, Daniel Atencio, Marcelo Andrade, Reynaldo Contreira (2018) Crystal-chemistry of Y-poor hainite-(Y) from Poços de Caldas alkaline complex, Minas Gerais, Brazil. in abstracts of the 22nd IMA Meeting Melbourne p 226
Ferro-edenite
Formula: {Na}{Ca2}{Fe2+5}(AlSi7O22)(OH)2
Reference: www.minservice.com/store/scripts/catalog_available.asp
Ferro-katophorite ?
Formula: {Na}{CaNa}{Fe2+4Al}[(AlSi7)O22](OH)2
Description: Some of the material marketed as rare amphibole species from Taquaral is actually black kyanite from https://www.mindat.org/loc-157757.html
Reference: www.sauktown.minerals.com
Ferrokentbrooksite
Formula: Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3Cl2
Reference: Atencio et al.(2000) 4th international conference mineralogy and museuns, program and abstracts volume, p23.
Fersmanite
Formula: Ca4(Na,Ca)4(Ti,Nb)4(Si2O7)2O8F3
Reference: ATENCIO, D., COUTINHO, J.M.C., ULBRICH, M.N.C., VLACH, S.R.F., RASTVETAEVA, R.K. & PUSHCHAROVSKY, D.Yu. (1999) Hainite from Poços de Caldas, Minas Gerais, Brazil. Canadian Mineralogist, 37, 91-98.
'Florencite'
Florencite-(Ce) (TL)
Formula: CeAl3(PO4)2(OH)6
Reference: Hussak and Prior (1900) Mineralogical Magazine: 12: 244.
Fluocerite-(Ce)
Formula: (Ce,La)F3
Reference: Hussak and Prior (1900) Mineralogical Magazine: 12: 244.
Fluorapatite
Formula: Ca5(PO4)3F
Localities: Reported from at least 40 localities in this region.
Fluorapatite var: Carbonate-rich Fluorapatite
Formula: Ca5(PO4,CO3)3(F,O)
Fluorapatite var: Mn-bearing Fluorapatite
Formula: (Ca,Mn2+)5(PO4)3(F,Cl,OH) or Ca5([P,Mn5+]O4)3(F,Cl,OH)
Fluorapophyllite-(K)
Formula: KCa4(Si8O20)(F,OH) · 8H2O
Reference: Min Rec 36:3 pp275-280
Fluorbritholite-(Ce)
Formula: (Ce,Ca)5(SiO4)3F
Reference: Azzi, Andrezza de Almeida (2017) Rare Minerals from Poços de Caldas, MG
Fluor-buergerite
Formula: Na(Fe3+3)Al6(Si6O18)(BO3)3O3F
Description: Unbelievable occurrence of a ferric tourmaline in a granite pegmatite. The statements in Min Rec. 33:215 are insufficient to accept this identification. Optics, specific gravity, and "gemological techniques" can not be accepted as conclusive proof. Quantitative chemical analyses are necessary.
Reference: erroneously reported [MinRec 33:209]
Fluorcalciomicrolite (TL)
Formula: (Ca,Na)2(Ta,Nb)2O6F
Reference: Andrade, M.B., Atencio, D., Yang, H., Downs, R.T., Persiano, A.I.C. and Ellena, J. (2012): Fluorcalciomicrolite, IMA 2012-036. CNMNC Newsletter No. 14, October 2012, page 1286; Mineralogical Magazine, 76, 1281-1288; Andrade, M. B., Atencio, D., Persiano, A. I. C., & Ellena, J. (2013). Fluorcalciomicrolite,(Ca, Na,□)2Ta2O6F, a new microlite-group mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil. Mineralogical Magazine: 77(7): 2989-2996.
Fluor-elbaite (TL)
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F
Reference: Dutrow, B. and Henry, D. J. (2000) Complexly zoned fibrous tourmaline: A record of evolving magmatic and hydrothermal fluids. Canadian Mineralogist, 38, 131-143; Bosi, F., Andreozzi, G.B., Skogby, H., Lussier, A.J., Abdu, Y.A., Hawthorne, F.C. (2013): Fluor-elbaite, Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3F, a new mineral species of the tourmaline supergroup. American Mineralogist, 98, 297–303.
Fluorite
Formula: CaF2
Localities: Reported from at least 15 localities in this region.
Fluorlamprophyllite (TL)
Formula: Na3(SrNa)Ti3(Si2O7)2O2F2
Reference: Andrade, M.B., Yang, H., Downs, R.T., Färber, G., Contreira Filho, R.R., Evans, S.H., Loehn, C.W. and Schumer, B.N. (2014) Fluorlamprophyllite, IMA 2013-102. CNMNC Newsletter No. 19, February 2014, page 166; Mineralogical Magazine, 78, 165-170.
Foitite
Formula: (□,Na)(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3OH
Footemineite
Formula: Ca2Mn2+Mn2+2Mn2+2Be4(PO4)6(OH)4 · 6H2O
Reference: Leavens, P., White, J., and Nelen, J., 1990, Zanazzi from Minas Gerais, Brazil, Mineralogical Record 21, 413-417.
Forsterite
Formula: Mg2SiO4
Reference: Jour. of South American Earth Sci. 15:709–723
Fourmarierite
Formula: Pb(UO2)4O3(OH)4 · 4H2O
Franklinite
Formula: Zn2+Fe3+2O4
Frondelite (TL)
Formula: Mn2+Fe3+4(PO4)3(OH)5
Localities: Reported from at least 12 localities in this region.
Reference: Lindberg, M. L. (1949): Frondelite and the frondelite-rockbridgeite series. American Mineralogist. 34, 541-549; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 868; Mineralogical Record: 30: 347.
'Frondelite-Rockbridgeite Series'
Gahnite
Formula: ZnAl2O4
Gaidonnayite
Formula: Na2Zr(Si3O9) · 2H2O
Galena
Formula: PbS
Localities: Reported from at least 14 localities in this region.
'Garnet Group'
Formula: X3Z2(SiO4)3
Localities: Reported from at least 27 localities in this region.
'Garnierite'
Reference: Rafael Hernandes Corrêa-Silva.
Gayite
Formula: NaMn2+Fe3+5(PO4)4(OH)6 · 2H2O
Reference: Sergio Varvello collection
Geocronite
Formula: Pb14(Sb,As)6S23
Habit: 60 degree twin crystals to 9cm
Colour: Gray
Reference: Mineralogical Record 8:391
Georgechaoite
Formula: NaKZr[Si3O9] · 2H2O
Reference: Robinson, G. W., King, V. T., Scovil, J., & Cureton, F. (1995). World review of mineral discoveries: 1993-1994. Mineralogical Record, 26(5), 475.; RRUFF ID: R100082
Gersdorffite
Formula: NiAsS
Gibbsite
Formula: Al(OH)3
Localities: Reported from at least 6 localities in this region.
'Glass'
Goethite
Formula: α-Fe3+O(OH)
Localities: Reported from at least 21 localities in this region.
Gold
Formula: Au
Localities: Reported from at least 50 localities in this region.
Gold var: Palladian Gold
Formula: (Au,Pd)
Gold var: Porpezite
Formula: (Au,Pd)
Reference: RWMW specimen
Gonnardite
Formula: (Na,Ca)2(Si,Al)5O10 · 3H2O
Reference: Atencio et al. (1999) Canadian Mineralogist 37, 91-98.
Gorceixite (TL)
Formula: BaAl3(PO4)(PO3OH)(OH)6
Localities: Reported from at least 11 localities in this region.
Reference: Neues Jahrbuch für Mineralogie, Monatshefte,446 (1982)
Gordonite
Formula: MgAl2(PO4)2(OH)2 · 8H2O
Gormanite
Formula: (Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O
'Gormanite-Souzalite Series'
Reference: Sergio Varvello photo and specimen
Goyazite (TL)
Formula: SrAl3(PO4)(PO3OH)(OH)6
Localities: Reported from at least 8 localities in this region.
Reference: Damour, A. (1884): Note sur un nouveau phosphate d'alumine et de chaux, des terrains diamantifères. Bulletin de la Société française de Minéralogie 7, 204-205.
Graftonite
Formula: Fe2+Fe2+2(PO4)2
Graphite
Formula: C
Localities: Reported from at least 7 localities in this region.
Greenockite
Formula: CdS
Reference: Waber et al. (1992) Jour. Geochemical Explor. 45, 53-112; WABER, N., SCHORSCHER, H.D., & PETERS, T. (1992) Hydrothermal and supergene uranium mineralization at the Osamu Utsumi mine, Poços de Caldas, Minas Gerais, Brazil. Journal of Geochemical Exploration, 45, 53-112.
Greifensteinite
Formula: Ca2Fe2+5Be4(PO4)6(OH)4 · 6H2O
Localities: Reported from at least 11 localities in this region.
Grossular
Formula: Ca3Al2(SiO4)3
Guimarãesite (TL)
Formula: Ca2Be4Zn5(PO4)6(OH)4 · 6H2O
Reference: IMA website
'Gummite'
Reference: Cassedanne, J.P. & Baptista, A. (1999): Famous Mineral Localities: The Sapucaia Pegmatite Minas Gerais, Brazil. Mineralogical Record, 30: 347-360 + 365
Gypsum
Formula: CaSO4 · 2H2O
Gypsum var: Selenite
Formula: CaSO4 · 2H2O
Hainite-(Y)
Formula: Na2Ca4(Y,REE)Ti(Si2O7)2OF3
Haiweeite
Formula: Ca(UO2)2[Si5O12(OH)2] · 6H2O
Reference: American Mineralogist: 84: 197-198.; Jambor, J.L. and Roberts, A.C. (2002) New mineral names. American Mineralogist: 87: 765-768.
'Halloysite'
Formula: Al2(Si2O5)(OH)4
Reference: Waber et al. (1992) Jour. Geochemical Explor. 45, 53-112; WABER, N., SCHORSCHER, H.D., & PETERS, T. (1992) Hydrothermal and supergene uranium mineralization at the Osamu Utsumi mine, Poços de Caldas, Minas Gerais, Brazil. Journal of Geochemical Exploration, 45, 53-112.
Harrisonite
Formula: Ca(Fe2+,Mg)6(PO4)2(SiO4)2
Reference: Baijot, M., Hatert, F., Dal Rio, F. & Philipo, S. (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. Canadian Mineralogist 52, 373-397.
Hausmannite
Formula: Mn2+Mn3+2O4
Hechtsbergite
Formula: Bi2(VO4)O(OH)
Reference: [MinRec 32:416]
Hedleyite
Formula: Bi7Te3
Reference: Oberthür, T. and Weiser, T. W. (2008): Gold-bismuth-telluride-sulphide assemblages at the Viceroy Mine, Harare-Bindura-Shamva greenstone belt, Zimbabwe. Mineralogical Magazine 72, 953-970. [contains also data on Passagem de Mariana Mine]
Helvine
Formula: Be3Mn2+4(SiO4)3S
Reference: Rocks & Minerals (2009) 84:42-45; Moore, T. (2004): What's New in Minerals. Costa Mesa Show 2003. Mineralogical Record. 35(2),143-145
Hematite
Formula: Fe2O3
Localities: Reported from at least 62 localities in this region.
Hematite var: Iron Rose
Formula: Fe2O3
Hematite var: Martite
Formula: Fe2O3
Localities: Reported from at least 6 localities in this region.
Hematite var: Specularite
Formula: Fe2O3
Localities: Reported from at least 15 localities in this region.
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Hentschelite
Formula: CuFe3+2(PO4)2(OH)2
Reference: Luiz Alberto Dias Menezes,Fo.
Herderite
Formula: CaBePO4(F,OH)
Localities: Reported from at least 6 localities in this region.
Heterosite
Formula: (Fe3+,Mn3+)PO4
Localities: Reported from at least 8 localities in this region.
Heulandite-Ca
Formula: (Ca,Na)5(Si27Al9)O72 · 26H2O
Reference: Rob Lavinsky
Hilairite
Formula: Na2Zr[SiO3]3 · 3H2O
Reference: Horváth, Menezes, Toft collections - confirmed by XRD & microprobe; Pekov, I. et al (2003): New Data on Minerals: 38: 20-33.
Holmquistite
Formula: ☐{Li2}{Mg3Al2}(Si8O22)(OH)2
Reference: J. Quéméneur & M. Lagache (1994): LA HOLMQUISTITE DES PEGMATITES DE VOLTA GRANDE PRES DE SÃO JOÃO DEL REI, MINAS GERAIS, BRESIL: CARACTERISTIQUES CHIMIQUES ET MINERALOGIQUES. GEONOMOS, 2 (2), 15-21. [http://www.igc.ufmg.br/geonomos/PDFs/2_2_15_21_Quemeneur.pdf]; Quéméneur, J., & Lagache, M. (1999). Comparative study of two pegmatitic fields from Minas Gerais, Brazil, using rubidium and cesium content of the micas and feldspars. Brazilian Journal of Geology, 29(1), 27-32.
Hongshiite
Formula: PtCu
'Hornblende'
Localities: Reported from at least 6 localities in this region.
Hörnesite
Formula: Mg3(AsO4)2 · 8H2O
Reference: Atencio D, Carvalho F M S, Matioli P A (2004) Coutinhoite, a new thorium uranyl silicate hydrate, from Urucum Mine, Galiléia, Minas Gerais, Brazil. American Mineralogist 89, 721-724
Huanghoite-(Ce)
Formula: BaCe(CO3)2F
Reference: Traversa, G., Gomes, C. B., Brotzu, P., Buraglini, N., Morbidelli, L., Principato, M. S., ... & Ruberti, E. (2001). Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil). Anais da Academia Brasileira de Ciências, 73(1), 71-98.
Humboldtine
Formula: Fe2+(C2O4) · 2H2O
Hureaulite
Formula: (Mn,Fe)5(PO4)2(HPO4)2 · 4H2O
Localities: Reported from at least 14 localities in this region.
Hureaulite var: Bastinite
Formula: (Mn,Fe)5(PO4)2(HPO4)2 · 4H2O
Reference: Van King
Hydrokenomicrolite (TL)
Formula: (◻,H2O)2Ta2(O,OH)6(H2O)
Reference: Andrade, M.B., Atencio, D., Chukanov, N.V., Ellena, J. (2012) Hydrokenomicrolite, IMA 2011-103. CNMNC Newsletter No. 13, June 2012, page 809; Mineralogical Magazine, 76, 807-817; Andrade, M.B., Atencio, D., Chukanov, N.V., Ellena, J. (2013): Hydrokenomicrolite, (☐,H2O)2Ta2(O,OH)6(H2O), a new microlite group mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil. American Mineralogist, 98, 292–296
Hydroxycalciomicrolite (TL)
Formula: Ca1.5Ta2O6(OH)
Type Locality:
Reference: Andrade, M.B., Yang, H., Atencio, D., Downs, R.T., Chukanov, N.V., Lemée-Cailleau, M.-H., Persiano, A.I.C., Goeta, A.E. and Ellena, J. (2013) Hydroxycalciomicrolite, IMA 2013-073. CNMNC Newsletter No. 18,December 2013, page 3252; Mineralogical Magazine, 77, 3249-3258
Hydroxycalcioroméite (TL)
Formula: (Ca,Sb3+)2(Sb5+,Ti)2O6(OH)
Type Locality:
Description: Octahedral crystals of Lewisite recently proved to be a titanian variety of Romèite. Reference needed.
Reference: Hussak and Prior (1900) Mineralogical Magazine: 12: 244.; Palache, C., Berman, H., and Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1022.; Brugger, J., Gieré, R., Graeser, S., and Meisser, N. (1997) The crystal chemistry of roméite. Contributions to Mineralogy & Petrology: 127: 136–146.; Jambor, J.L. and Roberts, A.C. (1998) New mineral names. American Mineralogist: 83: 400-403.; Rouse, R.C., Dunn, P.J., Peacor, D.R., and Wang, L. (1998) Structural studies of the natural antimonian pyrochlores. I. Mixed valency, cation site splitting, and symmetry reduction in lewisite. Journal of Solid State Chemistry 141: 562-569.; Jambor, J.E., Pertsev, N.N., and Roberts, A.C. (1999) New mineral names. American Mineralogist: 84: 1195-1198.;
Hydroxykenopyrochlore (TL)
Formula: (□,Ce,Ba)2(Nb,Ti)2O6(OH,F)
Type Locality:
Reference: Miyawaki, R., Momma, K., Matsubara, S., Sano, T., Shigeoka, M. and Horiuchi, H. (2017) Hydroxykenopyrochlore, IMA 2017-030a. CNMNC Newsletter No. 39, October 2017, page 1285; Mineralogical Magazine, 81, 1279–1286.
Hydroxylapatite
Formula: Ca5(PO4)3(OH)
Hydroxylherderite
Formula: CaBe(PO4)(OH,F)
Localities: Reported from at least 21 localities in this region.
'Hypersthene'
Formula: (Mg,Fe)SiO3
'Iddingsite'
Formula: MgO · Fe2O3 · 3SiO2·4H2O
Reference: Berkley, J. L., Keil, K., & Prinz, M. (1980) Comparative petrology and origin of Governador Valadares and other nakhlites. In: Lunar and Planetary Science Conference, 11th, Houston, TX, March 17-21, 1980, Proceedings. Volume 2. (A82-22296 09-91) New York, Pergamon Press, 1980, p. 1089-1102.; http://curator.jsc.nasa.gov/antmet/mmc/GovVal.pdf
Ilmenite
Formula: Fe2+TiO3
Localities: Reported from at least 27 localities in this region.
Ilsemannite
Formula: Mo3O8 · nH2O
Reference: WABER, N., SCHORSCHER, H.D., & PETERS, T. (1992) Hydrothermal and supergene uranium mineralization at the Osamu Utsumi mine, Poços de Caldas, Minas Gerais, Brazil. Journal of Geochemical Exploration, 45, 53-112.
'Indicolite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Localities: Reported from at least 9 localities in this region.
Irarsite
Formula: (Ir,Ru,Rh,Pt)AsS
Iron
Formula: Fe
Localities: Reported from at least 7 localities in this region.
Iron var: Kamacite
Formula: (Fe,Ni)
Localities: Reported from at least 6 localities in this region.
Isocubanite
Formula: CuFe2S3
Reference: Ramdohr, P. (1973) The Opaque Minerals in Stony Meteorites. Elsevier Publishing Company: Amsterdam; London; New York. 245 pages.; Gomes, C.B. & Keil, K. (1980) Brazilian Stony Meteorites: University of New Mexico Press: Albuquerque. 162 pages.
Isokite
Formula: CaMg(PO4)F
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.; Berger, V.I., Singer, D.A., and Orris, G.J., 2009, Carbonatites of the world, explored deposits of Nb and REE; database and grade and tonnage models: U.S. Geological Survey Open-File Report 2009-1139, 17 p. and database.
Isomertieite (TL)
Formula: Pd11Sb2As2
Reference: Mineralogical Magazine(1974) 39, 528-543
Ixiolite
Formula: (Ta,Nb,Sn,Fe,Mn)4O8
Reference: Dias, C.H. & de Sá Carneiro Chaves, M.L: (2015): Uncommon Nb-tantalate from the Cachoeira mine, Araçuaí pegmatite district (Minas Gerais). Revista Escola des Minas, 68 (4): ?
Jacutingaite (TL)
Formula: Pt2HgSe3
Type Locality:
Reference: A. R. Cabral, H. F. Galbiatti, R. Kwitko-Riberio, B. Lehmann (2008): Terra Nova, 20, 32-37.; Vymazalová, A., Laufek, F., Drábek, M., Cabral, A.R., Haloda, J., Sidorinová, T., Lehmann, B., Galbiatti, H.F. and Drahokoupil, J. (2011) Jacutingaite, IMA 2010-078. CNMNC Newsletter No. 8, April 2011, page 293; Mineralogical Magazine, 75, 289-294.
Jadeite
Formula: Na(Al,Fe3+)Si2O6
Jahnsite-(CaMnFe)
Formula: {Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O
Habit: tiny, flattened,elongated waxy crystals
Colour: yellow
Description: in frondelite cavities
Reference: Cassedanne, J.P. & Baptista, A. (1999): Famous Mineral Localities: The Sapucaia Pegmatite Minas Gerais, Brazil. Mineralogical Record, 30: 347-360 + 365
Jahnsite-(CaMnMg)
Formula: {Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O
Jahnsite-(CaMnMn)
Formula: {Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O
Reference: Sergio Varvello collection
'Jahnsite Group'
Formula: XM1M22M32(H2O)8(OH)2(PO4)4
Localities: Reported from at least 9 localities in this region.
Jahnsite-(MnMnFe)
Formula: Mn2+Mn2+Fe2+2Fe3+2(PO4)4(OH)2·8H2O
Reference: Baijot, M., Hatert, F., Dal Rio, F. & Philipo, S. (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. Canadian Mineralogist 52, 373-397.
Jahnsite-(MnMnMg)
Formula: Mn2+Mn2+Mg2Fe3+2(PO4)4(OH)2 · 8H2O
Reference: Baijot, M., Hatert, F. & Philippo, S. (2012): Mineralogy and geochemistry of phosphates and silicates in the Sapucaia pegmatite, Minas Gerais, Brazil: Genetic implications. Canadian Mineralogist. 50, 1531-1554
Jahnsite-(MnMnMn)
Formula: {Mn2+}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2O
Reference: Baijot, M., Hatert, F., Dal Rio, F. & Philipo, S. (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. Canadian Mineralogist 52, 373-397.
Jahnsite-(NaMnMg) (TL)
Formula: {(Na,Ca)}{(Mn2+,Fe3+)}{(Mg,Fe3+)2}{Fe3+2}(PO4)4(OH)2 · 8H2O
Type Locality:
Reference: Kampf, A.R., Nash, B.P., Chiappino, L. and Varvello, S. (2018) Jahnsite-(NaMnMg), IMA 2018-017. CNMNC Newsletter No 43, June 2018, page 785; Mineralogical Magazine: 82: 779-785.
'Jahnsite Subgroup'
Formula: XM1M22M32(H2O)8(OH)2(PO4)4
Reference: Jonathan Barre Ardizzi, Daniel Atencio (2018) Mineralogy of rockbridgeite - frondelite series and its phosphate association from the Jocão pegmatite, Galileia, Minas Gerais, Brazil. in abstracts of the 22nd IMA Meeting Melbourne p 494
Jamesonite
Formula: Pb4FeSb6S14
Reference: USGS Professional Paper 341B
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Johnsomervilleite
Formula: Na10Ca6Mg18Fe25(PO4)36
Habit: coralloid growths to several 10s of cm
Reference: Cassedanne, J.P. & Baptista, A. (1999): Famous Mineral Localities: The Sapucaia Pegmatite Minas Gerais, Brazil. Mineralogical Record, 30: 347-360 + 365
Jordisite
Formula: MoS2
Reference: WABER, N., SCHORSCHER, H.D., & PETERS, T. (1992) Hydrothermal and supergene uranium mineralization at the Osamu Utsumi mine, Poços de Caldas, Minas Gerais, Brazil. Journal of Geochemical Exploration, 45, 53-112.
'Joséite'
Formula: Bi4TeS2
Reference: Kenngoth 1853
Joséite-B (TL)
Formula: Bi4Te2S
Type Locality:
Reference: ATENCIO, D. (2001): Type Mineralogy of Brazil. Universidade de São Paulo, Instituto de Geociências, São Paulo, Brazil (11-14).
Kalinite
Formula: KAl(SO4)2 · 11H2O
Reference: Waber et al. (1992) Jour. Geochemical Explor. 45, 53-112; WABER, N., SCHORSCHER, H.D., & PETERS, T. (1992) Hydrothermal and supergene uranium mineralization at the Osamu Utsumi mine, Poços de Caldas, Minas Gerais, Brazil. Journal of Geochemical Exploration, 45, 53-112.
Kalsilite
Formula: KAlSiO4
Reference: Revista Brasileira de Geociências 30(3):417-420 (2000)
Kambaldaite ?
Formula: NaNi4(CO3)3(OH)3 · 3H2O
Description: This is a bizarre mineral for a granite pegmatite. What is the real host rock and how was this species identified? Extremely suspicious.
Kanonaite
Formula: Mn3+Al(SiO4)O
Reference: ex-collection P.A. Matioli (method of identification unknown)
Kaolinite
Formula: Al2(Si2O5)(OH)4
Localities: Reported from at least 16 localities in this region.
Karibibite
Formula: Fe3+3(As3+O2)4(As3+2O5)(OH)
Kentbrooksite
Formula: (Na,REE)15(Ca,REE)6(Mn2+,Fe2+)3Zr3Nb[Si25O74]F2 · 2H2O
'K Feldspar'
Localities: Reported from at least 63 localities in this region.
'K Feldspar var: Adularia'
Formula: KAlSi3O8
Reference: Mineralogical Record (1994) 25, 165-170
Kidwellite
Formula: NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Kimzeyite
Formula: Ca3(Zr,Ti)2((Si,Al,Fe3+)O4)3
Reference: Traversa, G., Gomes, C. B., Brotzu, P., Buraglini, N., Morbidelli, L., Principato, M. S., ... & Ruberti, E. (2001). Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil). Anais da Academia Brasileira de Ciências, 73(1), 71-98.
Kochite
Formula: Na3Ca2MnZrTi(Si2O7)2OF3
Reference: Gunnar Färber
Kosnarite
Formula: KZr2(PO4)3
Kotulskite
Formula: Pd(Te,Bi)
Reference: Brenner et al (1990) Econ Geol 85:904-920
Kupletskite
Formula: (K,Na)3(Mn,Fe)7Ti2Si8O26(OH)4F
Reference: ATENCIO, D., COUTINHO, J.M.C., ULBRICH, M.N.C., VLACH, S.R.F., RASTVETAEVA, R.K. & PUSHCHAROVSKY, D.Yu. (1999) Hainite from Poços de Caldas, Minas Gerais, Brazil. Canadian Mineralogist, 37, 91-98.
Kutnohorite
Formula: CaMn2+(CO3)2
Kyanite
Formula: Al2(SiO4)O
Localities: Reported from at least 17 localities in this region.
Lamprophyllite
Formula: (Na,Mn2+)3(Sr,Na)2(Ti,Fe3+)3(Si2O7)2O2(OH,O,F)2
Landesite ?
Formula: Mn2+3-xFe3+x(PO4)2(OH)x · (3-x)H2O
Description: Brown altered reddingite.
Reference: Tom Loomis
Lanthanite-(Nd)
Formula: (Nd,La)2(CO3)3 · 8H2O
Reference: Waber (1991)
Laueite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
Localities: Reported from at least 9 localities in this region.
Låvenite
Formula: (Na,Ca)2(Mn2+,Fe2+)(Zr,Ti)(Si2O7)(O,OH,F)2
Reference: Atencio, D., Coutinho, J. M. V., Ulbrich, M. N. C., Vlach, S. R. F., Rastsvetaeva, R. K., & Pushcharovsky, D. Y. (1999). Hainite from Poços de Caldas, Minas Gerais, Brazil. The Canadian Mineralogist, 37, 91-98.
Lazulite
Formula: MgAl2(PO4)2(OH)2
Lefontite (TL)
Formula: Fe2Al2Be(PO4)2(OH)6
Type Locality:
Reference: Yang, H., Downs, R.T., Evans, S.H., Morrison, S.M. and Schumer, B.N. (2015) Lefontite, IMA 2014-075. CNMNC Newsletter No. 23, February 2015, page 55; Mineralogical Magazine, 79, 51-58.
Legrandite
Formula: Zn2(AsO4)(OH) · H2O
Description: A primary reference should be found to substantiate the listing.
Reference: Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols; Canadian Mlneralogist Vol. 20, pp. 87-89 (1982)
Lepidocrocite
Formula: γ-Fe3+O(OH)
Reference: Waber (1991)
'Lepidolite'
Localities: Reported from at least 35 localities in this region.
Leucite
Formula: K(AlSi2O6)
Reference: Danni, J. C. M., & Scartezini, A. A. (1990). O Olivina Leucitito De Pântano Ea Natureza Do Vulcanismo Da Formação Mata Da Corda, MG. Revista Brasileira de Geociências, 20.
Leucophosphite
Formula: KFe3+2(PO4)2(OH) · 2H2O
Localities: Reported from at least 7 localities in this region.
Leucoxene
Libethenite
Formula: Cu2(PO4)(OH)
Reference: Sergio Varvello collection
'Liddicoatite'
Formula: Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Description: No data to support the identification. Gemmological techniques insufficient to identify the species.
Reference: erroneously reported [MinRec 33:209]
'Limonite'
Formula: (Fe,O,OH,H2O)
Localities: Reported from at least 28 localities in this region.
Lindbergite (TL)
Formula: Mn2+(C2O4) · 2H2O
Type Locality:
Reference: AmMin 89:1087
Lipscombite (TL)
Formula: Fe2+Fe3+2(PO4)2(OH)2
Reference: American Mineralogist (1953): 38: 612-638; Mineralogical Record: 30: 347; J.W. Anthony at al.: Handbook of Mineralogy, Vol. IV (2000).
Lithiophilite
Formula: LiMn2+PO4
'Lithiophilite-Triphylite Series'
Reference: Sergio Varvello photo
Lithiophorite
Formula: (Al,Li)MnO2(OH)2
Lithiophosphate
Formula: Li3PO4
Reference: Luiz Alberto Dias Menezes Filho, Mario Luiz de Sá Carneiro Chaves, Coralie Heinis Dias, Daniel Atencio (2016): Recent mineral discoveries in the Coronel Murta, Taquaral, and Medina pegmatite fields, northeastern Minas Gerais, Brazil. REM - Int. Eng. J. 69, 301-307. [http://www.scielo.br/pdf/remi/v69n3/2448-167X-remi-69-03-0301.pdf].; Donald Doell Collection
Lithiotantite
Formula: LiTa3O8
Löllingite
Formula: FeAs2
Localities: Reported from at least 9 localities in this region.
Loparite-(Ce)
Formula: (Na,REE)Ti2O6
Reference: Haggerty, S. E., & Mariano, A. N. (1983). Strontian-loparite and strontio-chevkinite: Two new minerals in rheomorphic fenites from the Parana Basin carbonatites, South America. Contributions to Mineralogy and Petrology, 84(4), 365-381.
Lorenzenite
Formula: Na2Ti2(Si2O6)O3
Reference: Andrezza Azzi, Daniel Atencio, Marcelo Andrade, Reynaldo Contreira (2018) Crystal-chemistry of Y-poor hainite-(Y) from Poços de Caldas alkaline complex, Minas Gerais, Brazil. in abstracts of the 22nd IMA Meeting Melbourne p 226
Ludlamite
Formula: Fe2+3(PO4)2 · 4H2O
Luinaite-(OH)
Formula: Na(Fe2+)3Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: S. Mills type description in prep
Mackinawite
Formula: (Fe,Ni)9S8
Magnesio-arfvedsonite
Formula: {Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2
Reference: Traversa, G., Gomes, C. B., Brotzu, P., Buraglini, N., Morbidelli, L., Principato, M. S., ... & Ruberti, E. (2001). Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil). Anais da Academia Brasileira de Ciências, 73(1), 71-98.
Magnesite
Formula: MgCO3
Magnesite var: Breunnerite
Formula: (Mg,Fe)CO3
Magnetite
Formula: Fe2+Fe3+2O4
Localities: Reported from at least 44 localities in this region.
Magnetite var: Titaniferous Magnetite
Formula: Fe2+(Fe3+,Ti)2O4
Malachite
Formula: Cu2(CO3)(OH)2
Maldonite
Formula: Au2Bi
Reference: Oberthür, T. and Weiser, T. W. (2008): Gold-bismuth-telluride-sulphide assemblages at the Viceroy Mine, Harare-Bindura-Shamva greenstone belt, Zimbabwe. Mineralogical Magazine 72, 953-970. [contains also data on Passagem de Mariana Mine]
'Manganese Oxides'
Localities: Reported from at least 10 localities in this region.
'Manganese Oxides var: Manganese Dendrites'
Manganite
Formula: Mn3+O(OH)
Reference: No reference listed
Manganoeudialyte (TL)
Formula: Na14Ca6Mn3Zr3[Si26O72(OH)2](H2O,Cl,O,OH)6
Reference: Nomura, S.F., Atencio, D., Chukanov, N.V., Rastsvetaeva, R.K., Cutinho, J.M.V. and Karipidis, T.K. (2010): Manganoeudialyte, a new mineral from Poços de Caldas, Minas Gerais, Brazil. Zapiski Vserossiiskogo Mineralogicheskogo Obshchestva, 139(4), 35-47.
Manganosite
Formula: MnO
Reference: http://acd.ufrj.br/geologia/posgrad/area1_d.htm
Mannardite
Formula: Ba(Ti4+6V3+2)O16
Mannardite var: Ankangite
Formula: Ba(Ti,V3+,Cr)8O16
Marcasite
Formula: FeS2
Margarite
Formula: CaAl2(Al2Si2O10)(OH)2
Reference: Oliver, N.H.S., Thomson, B., Freitas-Silva, F.H., and 8 others, 2015, Local and regional mass transfer during thrusting, veining, and boudinage in the genesis of the giant shale-hosted Paracatu gold deposit, Minas Gerais, Brazil: Economic Geology, v. 110, p. 1803-1834.
Matioliite (TL)
Formula: NaMgAl5(PO4)4(OH)6 · 2H2O
Type Locality:
Habit: prismatic to tabular
Colour: blue to colorless
Fluorescence: non-fluorescent
Reference: Am.Min 91,1932-1936(2006); Atencio, D., Coutinho, J.M.V., Mascarenhas, Y.P., Ellena, J. (2006): Matioliite, the Mg-analog of burangaite, from Gentil mine, Mendes Pimentel, Minas Gerais, Brazil, and other occurrences. American Mineralogist, 91, 1932-1936.
Maucherite
Formula: Ni11As8
'Melilite Group'
Formula: Ca2M(XSiO7)
Melonite
Formula: NiTe2
Reference: Brenner et al (1990) Econ Geol 85:904-920
Merenskyite
Formula: (Pd,Pt)(Te,Bi)2
Reference: The Canadian Mineralogist; August 2007; v. 45; no. 4; p. 751-773;
Merrillite
Formula: Ca9NaMg(PO4)7
Mertieite-II
Formula: Pd8Sb2.5As0.5
Messelite
Formula: Ca2Fe2+(PO4)2 · 2H2O
Meta-autunite
Formula: Ca(UO2)2(PO4)2 · 6-8H2O
Reference: Rob Lavinsky and Joseph Freilich specimens
Metaswitzerite
Formula: Mn2+3(PO4)2 · 4H2O
Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
Metauranocircite-I
Formula: Ba(UO2)2(PO4)2 · 7H2O
Reference: Atencio D, Carvalho F M S, Matioli P A (2004) Coutinhoite, a new thorium uranyl silicate hydrate, from Urucum Mine, Galiléia, Minas Gerais, Brazil. American Mineralogist 89, 721-724
Metavariscite
Formula: AlPO4 · 2H2O
Reference: Lamoso, I. S. M., & Atencio, D. (2017). Cristais zonados de fosfossiderita-metavariscita da Mina do Eduardo, Conselheiro Pena, Minas Gerais, Brazil. Geologia USP. Série Científica, 17(3), 23-27.
Metavivianite
Formula: Fe2+Fe3+2(PO4)2(OH)2 · 6H2O
Reference: Baijot, M., Hatert, F. & Philippo, S. (2012): Mineralogy and geochemistry of phosphates and silicates in the Sapucaia pegmatite, Minas Gerais, Brazil: Genetic implications. Canadian Mineralogist. 50, 1531-1554
'Meteoritic Iron'
Reference: Gomes, C.B. & Keil, K. (1980) Brazilian Stony Meteorites: University of New Mexico Press: Albuquerque. pp. 162.
'Meurigite'
Reference: Atencio,K. et al (2007): Ruifrancoite, a new Fe3+-dominant monoclinic member of the roscherite group from Galileia, Minas Gerais, Brazil. Canadian Mineralogist. 45, 1263-1273.
Meurigite-K
Formula: KFe3+8(PO4)6(OH)7 · 6.5H2O
'Mica Group'
Localities: Reported from at least 8 localities in this region.
Microcline
Formula: K(AlSi3O8)
Localities: Reported from at least 66 localities in this region.
Microcline var: Amazonite
Formula: K(AlSi3O8)
'Microlite Group'
Formula: A2-mTa2X6-wZ-n
Localities: Reported from at least 11 localities in this region.
'Microlite Group var: Bariomicrolite (of Hogarth 1977)' (FRL)
Type Locality:
Reference: van der Veen, A. H. (1963): A study of pyrochlore. Verhandelingen van het Koninklijk Nederlands geologisch mijnbouwkundig genootschap, Geologische serie 22: 1-188; Am Min 62 (1977), 403
'Microlite Group var: Stannomicrolite (of Hogarth 1977)'
Colour: Yellow
Description: Tiny yellow crystals on spherical stokesite crystal aggregates. Note: Only one specimen of stannomicrolite has been verified from this location to date. Many specimens were subsequently distributed with the same description, but have not yeilded the chemical analysis and were either normal microlite or uranmicrolite. (Luis Menezes, pers. com., 2009).
Reference: Excalibur Mineral Co.; www.mineralatlas.com.
'Microlite Group var: Uranmicrolite (of Hogarth 1977)' (FRL)
Reference: Guimarães, C.P. (1939): Djalmaita, um novo mineral radioativo. Annaes da Academia Brasileira de Sciencias: 11: 347-350; Guimar˜aes, C.P. (1941) Djalmaite, a new radio-active mineral. American Mineralogist: 26: 343–346.
Milarite
Formula: K2Ca4Al2Be4Si24O60 · H2O
Millerite
Formula: NiS
Reference: Traversa, G., Gomes, C. B., Brotzu, P., Buraglini, N., Morbidelli, L., Principato, M. S., ... & Ruberti, E. (2001). Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil). Anais da Academia Brasileira de Ciências, 73(1), 71-98.
Minasgeraisite-(Y) (TL)
Formula: BiCa(Y,Ln)2(□,Mn)2(Be,B,Si)4Si4O16 [(OH),O]4
Type Locality:
Reference: Foord, E. E., Gaines, R. V., Crock, J. G., Simmons, W. B., Jr., Barbosa, C. P. (1986): Minasgeraisite, a new member of the gadolinite group from Minas Gerais, Brazil. American Mineralogist 71, 603-607.; Mineralogical Record - Vol. 25, No. 3
Mitridatite
Formula: Ca2Fe3+3(PO4)3O2 · 3H2O
Molybdenite
Formula: MoS2
Molybdite
Formula: MoO3
'Monazite'
Localities: Reported from at least 19 localities in this region.
Monazite-(Ce)
Formula: Ce(PO4)
Localities: Reported from at least 12 localities in this region.
Montebrasite
Formula: LiAl(PO4)(OH)
Localities: Reported from at least 12 localities in this region.
Montgomeryite
Formula: Ca4MgAl4(PO4)6(OH)4 · 12H2O
Reference: Min Rec (1973) 4 (5), 207-213
Monticellite
Formula: CaMgSiO4
Reference: Gibson, S. A., Thompson, R. N., Leonardos, O. H., Dickin, A. P., & Mitchell, J. G. (1995). The Late Cretaceous impact of the Trindade mantle plume: evidence from large-volume, mafic, potassic magmatism in SE Brazil. Journal of Petrology, 36(1), 189-229.
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Localities: Reported from at least 7 localities in this region.
Moraesite (TL)
Formula: Be2(PO4)(OH) · 4H2O
Localities: Reported from at least 11 localities in this region.
Habit: Tufted or radial aggregates forming fibrous coatings and spherulitic masses
Colour: plae rose to colorless and milky
Reference: American Mineralogist (1953): 38: 1126-1133.
Mosandrite-(Ce)
Formula: (Ca3REE)[(H2O)2Ca0.50.5]Ti(Si2O7)2(OH)2(H2O)2
Reference: ATENCIO, D., COUTINHO, J.M.C., ULBRICH, M.N.C., VLACH, S.R.F., RASTVETAEVA, R.K. & PUSHCHAROVSKY, D.Yu. (1999) Hainite from Poços de Caldas, Minas Gerais, Brazil. Canadian Mineralogist, 37, 91-98.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 141 localities in this region.
Muscovite var: Alurgite
Formula: K2(Mg,Al)4-5(Al,Si)8O20(OH)4
Reference: https://www.mindat.org/photo-227365.html
Muscovite var: Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
Muscovite var: Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
Localities: Reported from at least 6 localities in this region.
Muscovite var: Phengite
Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2
Description: Inclusions in garnet mantle.
Reference: Chris D. Parkinson et al. , " Ultrahigh-pressure pyrope-kyanite granulites and associated eclogites in Neoproterozoic nappes of southeast Brazil", 2001, Universidade do Estado do Rio de Janeiro, http://akmotoki.tripod.com/2001/Waseda/Cdp.html
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 9 localities in this region.
Narsarsukite
Formula: Na4(Ti,Fe)2[Si8O20](O,OH,F)2
Reference: Azzi, Andrezza de Almeida (2017) Rare Minerals from Poços de Caldas, Minas Gerais, Brazil
Natrodufrénite
Formula: NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
Natrojarosite
Formula: NaFe3(SO4)2(OH)6
Natrolite
Formula: Na2Al2Si3O10 · 2H2O
Nenadkevichite
Formula: (Na,◻)8Nb4(Si4O12)2(O,OH)4 · 8H2O
Reference: Traversa, G., Gomes, C. B., Brotzu, P., Buraglini, N., Morbidelli, L., Principato, M. S., ... & Ruberti, E. (2001). Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil). Anais da Academia Brasileira de Ciências, 73(1), 71-98.
Neotocite
Formula: (Mn,Fe,Mg)SiO3 · H2O
Nepheline
Formula: Na3K(Al4Si4O16)
Localities: Reported from at least 8 localities in this region.
Neptunite
Formula: Na2KLiFe2+2Ti2Si8O24
Reference: ATENCIO, D., COUTINHO, J.M.C., ULBRICH, M.N.C., VLACH, S.R.F., RASTVETAEVA, R.K. & PUSHCHAROVSKY, D.Yu. (1999) Hainite from Poços de Caldas, Minas Gerais, Brazil. Canadian Mineralogist, 37, 91-98.
Nickeline
Formula: NiAs
Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Localities: Reported from at least 6 localities in this region.
Normandite
Formula: NaCa(Mn,Fe)(Ti,Nb,Zr)(Si2O7)OF
Reference: ATENCIO, D., COUTINHO, J.M.C., ULBRICH, M.N.C., VLACH, S.R.F., RASTVETAEVA, R.K. & PUSHCHAROVSKY, D.Yu. (1999) Hainite from Poços de Caldas, Minas Gerais, Brazil. Canadian Mineralogist, 37, 91-98.
Norsethite
Formula: BaMg(CO3)2
Nsutite
Formula: (Mn4+,Mn2+)(O,OH)2
Olenite
Formula: Na(Al3)Al6(Si6O18)(BO3)3O3(OH)
Description: Blue filiform inclusions in quartz crystals.
Reference: XRD by Dr Thomas Witzke, plus chemical analysis by Gunnar Färber showing only 0.3% Li.
'Olivereiraite'
Formula: Zr3Ti2O10 · 2H2O (?)
Reference: [Clark, 1993 - "Hey's Mineral Index"]
Omeiite
Formula: (Os,Ru)As2
Omphacite
Formula: (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6
Description: Recrystallized into diopside/Na-plagioclase/quartz symplectites.
Reference: Chris D. Parkinson et al. , " Ultrahigh-pressure pyrope-kyanite granulites and associated eclogites in Neoproterozoic nappes of southeast Brazil", 2001, Universidade do Estado do Rio de Janeiro, http://akmotoki.tripod.com/2001/Waseda/Cdp.html
Opal
Formula: SiO2 · nH2O
Localities: Reported from at least 7 localities in this region.
Opal var: Opal-AN
Formula: SiO2 · nH2O
Opal var: Wood Opal
Formula: SiO2 · nH2O
Reference: Martins da Pedra collection
Orthoclase
Formula: K(AlSi3O8)
Localities: Reported from at least 6 localities in this region.
'Orthopyroxene Subgroup'
Localities: Reported from at least 6 localities in this region.
Osarsite
Formula: (Os,Ru)AsS
Reference: Marchetto (1990) Econ Geol 85:921-927
'Oxycalciomicrolite'
Formula: Ca2Ta2O6O
Reference: Andrade, Marcelo Barbosa de (2007) Estudo cristaloquímico de minerais do grupo do pirocloro no Brasil. Tese de Doutorado Instituto de Geociências. São Paulo, 2007, p. 175
Palladinite
Formula: PdO
Palladium (TL)
Formula: (Pd,Pt)
Reference: Canadian Mineralogist; April 2002; v. 40; no. 2; p. 341-355
Palladium var: Platiniferous Palladium
Formula: (Pd,Pt)
Reference: Canadian Mineralogist: 40: 341-355.
Palladseite (TL)
Formula: Pd17Se15
Reference: Mineralogical Magazine(1977) 41, 123 and M10-13
Paragonite
Formula: NaAl2(AlSi3O10)(OH)2
Paranatisite
Formula: Na2Ti(SiO4)O
Reference: Gunnar Färber
Parasymplesite
Formula: Fe2+3(AsO4)2 · 8H2O
Reference: Sergio Varvello collection
Paravauxite
Formula: Fe2+Al2(PO4)2(OH)2 · 8H2O
Parsonsite
Formula: Pb2(UO2)(PO4)2
Reference: Stephan Wolfsried collection
Pavonite
Formula: AgBi3S5
Reference: MinRec 33:352
Pectolite
Formula: NaCa2Si3O8(OH)
Pentlandite
Formula: (FexNiy)Σ9S8
Perovskite
Formula: CaTiO3
Localities: Reported from at least 8 localities in this region.
Petalite
Formula: LiAl(Si4O10)
Localities: Reported from at least 6 localities in this region.
'Petrified Wood'
Reference: Paul De Bondt collection
Pharmacosiderite
Formula: KFe3+4(AsO4)3(OH)4 · 6-7H2O
Phenakite
Formula: Be2SiO4
Localities: Reported from at least 8 localities in this region.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Localities: Reported from at least 15 localities in this region.
Phosphoferrite
Formula: (Fe2+,Mn2+)3(PO4)2 · 3H2O
Phosphohedyphane
Formula: Ca2Pb3(PO4)3Cl
Reference: Slezak, P. R., 2012, Geology, mneralogy, and geochenmistry of the Vazante Noorthern Extension zinc silicate deposit, Minas Gerais, Brazil: M.S. thesis, Queen’s University, Kingston, Ontario (pdf available at https://qspace.library.queensu.ca/handle/1974/7027?mode=full).
Phosphosiderite
Formula: FePO4 · 2H2O
Localities: Reported from at least 12 localities in this region.
Phosphuranylite
Formula: (H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Localities: Reported from at least 7 localities in this region.
Pickeringite
Formula: MgAl2(SO4)4 · 22H2O
Reference: Waber et al. (1992) Jour. Geochemical Explor. 45, 53-112; WABER, N., SCHORSCHER, H.D., & PETERS, T. (1992) Hydrothermal and supergene uranium mineralization at the Osamu Utsumi mine, Poços de Caldas, Minas Gerais, Brazil. Journal of Geochemical Exploration, 45, 53-112.
Pigeonite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
'Planerite-Turquoise Series'
Description: Originally reported to be coeruleolactite. All purported coeruleolactite examined by the authors of the 1998 report (Foord, E.E. & Taggart, J.E.) were largely Planerite, or Occasionally turquoise. Published analysis indicates that the vacany in the 'A' site is between 0.51-0.54 atom fraction, the balance in Cu-0.40 and Zn-0.06 to 0.09. It is suggested by this analysis that the turquoise structure likely cannot accomodate Ca in the 'A' site.
Reference: Foord, E.E. & Taggart, J.E. (1998): A reexamination of the turquoise group; the mineral aheylite, planerite (redefined), turquoise and coeruleolactite. Mineralogical Magazine, 62, 93-111.
Platinum
Formula: Pt
Platinum var: Palladian Platinum
Formula: (Pt,Pd)
Reference: No reference listed
'Plessite'
Plumbogummite
Formula: PbAl3(PO4)(PO3OH)(OH)6
'Plumbogummite Group'
Reference: Waber, N., Schorscher, H. D., & Peters, T. (1992). Hydrothermal and supergene uranium mineralization at the Osamu Utsumi mine, Poços de Caldas, Minas Gerais, Brazil. Journal of Geochemical Exploration, 45(1-3), 53-112.
'Plumbomicrolite (of Hogarth 1977)' ?
Reference: Jordi Fabre specimen
Polezhaevaite-(Ce)
Formula: NaSrCeF6
Reference: Azzi, Andrezza de Almeida (2017) Rare Minerals from Poços de Caldas, MG
Pollucite
Formula: (Cs,Na)2(Al2Si4O12) · 2H2O
Polycrase-(Y)
Formula: Y(Ti,Nb)2(O,OH)6
Polylithionite
Formula: KLi2Al(Si4O10)(F,OH)2
Reference: Fernando R.M. Pires and A. Raphael Cabral (1998) The Volta Grande pegmatites, Minas Gerais, Brazil: an example of rare-element granitic pegmatites exceptionally enriched in lithium and rubidium: Discussion. The Canadian Mineralogist, 36, 1157-1158.
Potarite
Formula: PdHg
Reference: Canadian Mineralogist: 40: 341-355; Cabral, Alexandre Raphael; Vymazalova, Anna; Lehmann, Bernd; Tupinamba, Miguel; Haloda, Jakub; Laufek, Frantisek; Vlcek, Vojtech; Kwitko-Ribeiro, Rogerio (2009): Poorly crystalline Pd-​Hg-​Au intermetallic compounds from Corrego Bom Sucesso, southern Serra do Espinhaco, Brazil. European Journal of Mineralogy 21, 811-816.
Povondraite
Formula: NaFe3+3(Mg2Fe3+4)(Si6O18)(BO3)3(OH)3O
Description: Has XRD pattern similar to tourmaline, but is not dense enough and XRD can not be used to identify tourmaline species. Extremely unlikely occurrence of a ferric tourmaline in a granite pegmatite. The statements in Min Rec. 33:215 are insufficient to accept this identification. Optics, specific gravity, and "gemological techniques" can not be accepted as conclusive proof. Quantitative chemical analyses are necessary.
Reference: erroneously reported [MinRec 33:209]
'Psilomelane'
Pucherite
Formula: Bi(VO4)
Reference: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1051; Mineralogical Record: 32: 416.
Purpurite
Formula: (Mn3+,Fe3+)PO4
Pyrite
Formula: FeS2
Localities: Reported from at least 54 localities in this region.
Pyrite var: Arsenian Pyrite
Formula: FeS2
'Pyrochlore'
'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
'Pyrochlore Group var: Ceriopyrochlore (of Hogarth 1977)'
Formula: A2Nb2(O,OH)6Z
Reference: Orris, G.J., and Grauch, R.I. (2002): USGS Open-File Report 02-189.; Traversa, G., Gomes, C. B., Brotzu, P., Buraglini, N., Morbidelli, L., Principato, M. S., ... & Ruberti, E. (2001). Petrography and mineral chemistry of carbonatites and mica-rich rocks from the Araxá complex (Alto Paranaíba Province, Brazil). Anais da Academia Brasileira de Ciências, 73(1), 71-98.
'Pyrochlore Group var: Zero valent dominant member of Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
'Pyrochlore Supergroup'
Formula: A2-mD2X6-wZ1-n
Reference: [MinRec 2:12]
'Pyrochlore Supergroup var: Betafite (of Hogarth 1977)'
Formula: A2-mD2X6-wZ1+w
Reference: [MinRec 2:12]
Pyrolusite
Formula: Mn4+O2
Localities: Reported from at least 6 localities in this region.
Pyromorphite
Formula: Pb5(PO4)3Cl
Reference: [Mineralogical Record - Vol 25 No.3]
Pyrope
Formula: Mg3Al2(SiO4)3
Localities: Reported from at least 7 localities in this region.
Pyrope var: Rhodolite ?
Formula: Mg3Al2(SiO4)3
Pyrophanite
Formula: Mn2+TiO3
Pyrophyllite
Formula: Al2Si4O10(OH)2
'Pyroxene Group'
Pyroxmangite
Formula: MnSiO3
Pyrrhotite
Formula: Fe7S8
Localities: Reported from at least 18 localities in this region.
Qingheiite-(Fe2+) (TL)
Formula: Na2Fe2+MgAl(PO4)3
Type Locality:
Reference: European Journal of Mineralogy 22,459(2010)
Quartz
Formula: SiO2
Localities: Reported from at least 202 localities in this region.
Quartz var: Agate
Quartz var: Amethyst
Formula: SiO2
Quartz var: Ametrine ?
Formula: SiO2
Description: Much ametrine from Bolivia was smuggled over the border into Brazil during the 1970s to 19990s, then cut and polished by Brazilians and resold abroad as "brazilian" material. The natural occurrence of ametrine here, if true at all, needs confirmation.
Reference: www.minerals.net/mineral/silicate/tecto/quartz/images/quartz/gifs/amthyst8.htm.
Quartz var: Blue Quartz
Formula: SiO2
Reference: www.wrightsrockshop.com/gallery/southamerican/southamerican2.htm
Quartz var: Chalcedony
Formula: SiO2
Localities: Reported from at least 6 localities in this region.
Quartz var: Citrine
Formula: SiO2
Localities: Reported from at least 8 localities in this region.
Quartz var: Eisenkiesel
Formula: SiO2
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 168-370
Quartz var: Milky Quartz
Formula: SiO2
Reference: Luiz Alberto Dias Menezes,Fo.
Quartz var: Rock Crystal
Formula: SiO2
Localities: Reported from at least 8 localities in this region.
Quartz var: Rose Quartz
Formula: SiO2
Localities: Reported from at least 15 localities in this region.
Quartz var: Rutilated Quartz
Formula: SiO2
Quartz var: Sceptre Quartz
Formula: SiO2
Reference: Rui Nunes 2012
Quartz var: Smoky Quartz
Formula: SiO2
Localities: Reported from at least 22 localities in this region.
Rankamaite
Formula: (Na,K)3(Ta,Nb,Al)11(O,OH)31
Reference: Daniel Atencio, Reynaldo R. Contreira Fo., Stuart J. Mills, Jose M.V. Coutinho, Sara B. Honorato, Alejandro P. Ayala, Javier Ellena, and Marcelo B. de Andrade (2011) Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais, Brazil: crystal chemistry and Rietveld refinement. Am. Mineral. 96, 1455–1460.
Raspite
Formula: Pb(WO4)
Reference: Hlawatsch, K. (1905): Der Raspit von Sumidouro, Minas Geraës (Brasilien). Centralbl. Min. Geol. Paläont., 1905, 422–427.; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1090.
Reddingite
Formula: (Mn2+,Fe2+)3(PO4)2 · 3H2O
'Rhabdophane'
Reference: Berger, V.I., Singer, D.A., and Orris, G.J. (2009): USGS Open-File Report 09-1139
Rheniite
Formula: ReS2
Reference: Marchetto (1990) Econ Geol 85:921-927
Rhodochrosite
Formula: MnCO3
Localities: Reported from at least 8 localities in this region.
Rhodonite
Formula: Mn2+SiO3
Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
Rinkite-(Ce)
Formula: (Ca3Ce)Na(NaCa)Ti(Si2O7)2(OF)F2
Robertsite
Formula: Ca2Mn3+3(PO4)3O2 · 3H2O
Rockbridgeite
Formula: Fe2+Fe3+4(PO4)3(OH)5
Localities: Reported from at least 14 localities in this region.
Romanèchite ?
Formula: (Ba,H2O)2(Mn4+,Mn3+)5O10
Reference: Applied Earth Science : IMM Transactions section B, Volume 112, Number 3, December 2003 , pp. 279-286(8)
'Roméite Group'
Description: Occurs in manganese ores.
Reference: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1022.
Roscherite
Formula: Ca2Mn2+5Be4(PO4)6(OH)4 · 6H2O
Localities: Reported from at least 8 localities in this region.
'Roscherite Group'
Rosenbuschite
Formula: Na6Ca6Zr3Ti(Si2O7)4O2F6
Rossmanite
Formula: ☐(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Wilson, W E (2012) Famous Mimeral localities: The Jonas Mine, Itatiaia, Minas Gerais, Brazil. Mineralogical Record 43:289-317.
'Rubellite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Localities: Reported from at least 8 localities in this region.
Ruifrancoite (TL)
Formula: Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O
Reference: Atencio,K. et al (2007): Ruifrancoite, a new Fe3+-dominant monoclinic member of the roscherite group from Galileia, Minas Gerais, Brazil. Canadian Mineralogist. 45, 1263-1273.
Rutherfordine
Formula: (UO2)CO3
Reference: Cassedanne, J.P. & Baptista, A. (1999): Famous Mineral Localities: The Sapucaia Pegmatite Minas Gerais, Brazil. Mineralogical Record, 30: 347-360 + 365
Rutile
Formula: TiO2
Localities: Reported from at least 36 localities in this region.
Rutile var: Strüverite
Formula: (Ti,Ta,Fe)O2
Reference: Specimen in the collection of Richard Gaines [Rock Currier 2010]
Sabugalite
Formula: HAl(UO2)4(PO4)4 · 16H2O
Saléeite
Formula: Mg(UO2)2(PO4)2 · 10H2O
Localities: Reported from at least 10 localities in this region.
Samarskite-(Y)
Formula: (Y,Fe3+,Fe2+,U,Th,Ca)2(Nb,Ta)2O8
Sanidine
Formula: K(AlSi3O8)
Sarcopside
Formula: (Fe2+,Mn2+,Mg)3(PO4)2
Scheelite
Formula: Ca(WO4)
Localities: Reported from at least 6 localities in this region.
Schneiderhöhnite
Formula: Fe2+Fe3+3As3+5O13
Schoonerite
Formula: ZnMn2+Fe2+2Fe3+(PO4)3(OH)2 · 9H2O
Reference: Sergio Varvello collection
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities: Reported from at least 42 localities in this region.
Schreibersite
Formula: (Fe,Ni)3P
Reference: Meteoritics (ISSN 0026-1114), vol. 20, pt. 1, June 30, 1985, p. 259-273.
Schumacherite
Formula: Bi3(VO4)2O(OH)
Reference: [MinRec 32:416]
Scorodite
Formula: Fe3+AsO4 · 2H2O
Localities: Reported from at least 8 localities in this region.
Scorzalite (TL)
Formula: Fe2+Al2(PO4)2(OH)2
Habit: patches to a few cm
Colour: pale blue to ultramarine-blue
Description: Alters to a mixture of limonite and jahnsite
Reference: American Mineralogist (1948): 33: 205; Mineralogical Record: 14: 233.
Senaite (TL)
Formula: Pb(Mn,Y,U)(Fe,Zn)2(Ti,Fe,Cr,V)18(O,OH)38
Reference: Am Min 53 (1968), 869–879; Rocks&Min.(Jan.2000)
Senegalite
Formula: Al2(PO4)(OH)(OH)2 · H2O
Reference: B Gioia collection; Frost, R. L., López, A., Xi, Y., Murta, N., & Scholz, R. (2013). The molecular structure of the phosphate mineral senegalite Al 2 (PO 4)(OH) 3⋅ 3H 2 O–A vibrational spectroscopic study. Journal of Molecular Structure, 1048, 420-425.
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Serrabrancaite
Formula: MnPO4 · H2O
Siderite
Formula: FeCO3
Localities: Reported from at least 21 localities in this region.
Siegenite
Formula: CoNi2S4
Reference: http://acd.ufrj.br/geologia/posgrad/area1_d.htm
'Silica'
Description: Nearly pure silica grains [too small for mineralogical characterization]
Reference: http://curator.jsc.nasa.gov/antmet/mmc/GovVal.pdf; Gomes, C.B. & Keil, K. (1980) Brazilian Stony Meteorites: University of New Mexico Press: Albuquerque. pp. 162.
Sillimanite
Formula: Al2(SiO4)O
Localities: Reported from at least 7 localities in this region.
Silver
Formula: Ag
Simpsonite
Formula: Al4(Ta,Nb)3O13(OH,F)
Reference: Analysed (Reynaldo Contreira information); Daniel Atencio, Reynaldo R. Contreira Fo., Stuart J. Mills, Jose M.V. Coutinho, Sara B. Honorato, Alejandro P. Ayala, Javier Ellena, and Marcelo B. de Andrade (2011) Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais, Brazil: crystal chemistry and Rietveld refinement. Am. Mineral. 96, 1455–1460.
'Smectite Group'
Formula: A0.3D2-3[T4O10]Z2 · nH2O
Smithsonite
Formula: ZnCO3
Sodalite
Formula: Na8(Al6Si6O24)Cl2
Souzalite (TL)
Formula: (Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2O
Habit: Subparallell needles; bundles
Colour: lustrous or submetallic bluish green color
Description: Very rare samples up to 10 cm were collected in 1978 (Cassedanne 1983)
Reference: American Mineralogist (1949): 34: 83; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 911.
Sperrylite
Formula: PtAs2
Spessartine
Formula: Mn2+3Al2(SiO4)3
Localities: Reported from at least 14 localities in this region.
Sphalerite
Formula: ZnS
Localities: Reported from at least 23 localities in this region.
Spinel
Formula: MgAl2O4
Localities: Reported from at least 6 localities in this region.
Spinel var: Pleonaste
Formula: (Mg,Fe)Al2O4
Reference: Jour. of South American Earth Sci. 15:709–723
Spodumene
Formula: LiAlSi2O6
Localities: Reported from at least 29 localities in this region.
Spodumene var: Hiddenite
Formula: LiAlSi2O6
Reference: Bauer & Bouska, 1983. Precious & Semi-precious Stones
Spodumene var: Kunzite
Formula: LiAlSi2O6
Localities: Reported from at least 9 localities in this region.
Stanĕkite
Formula: (Mn2+,Fe2+,Mg)Fe3+(PO4)O
Reference: Baijot, M., Hatert, F., Dal Rio, F. & Philipo, S. (2014) Mineralogy and petrography of phosphate mineral association from the Jocão pegmatite, Minas Gerais, Brazil. Canadian Mineralogist 52, 373-397.
'Staringite'
Formula: (Fe,Mn)x(Ta,Nb)2xSn6-3xO12
Reference: MinRec 25:167-168
Staurolite
Formula: Fe2+2Al9Si4O23(OH)
Localities: Reported from at least 7 localities in this region.
Stewartite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
'Stibiconite'
Formula: Sb3+Sb5+2O6(OH)
Reference: USGS Professional Paper 341B
Stibiopalladinite
Formula: Pd5Sb2
Reference: Varajão, C. A. C., Colin, F., Vieillard, P., Melfi, A. J., & Nahon, D. (2000). Early weathering of palladium gold under lateritic conditions, Maquiné Mine, Minas Gerais, Brazil. Applied Geochemistry, 15(2), 245-263.
Stibiotantalite
Formula: Sb(Ta,Nb)O4
Reference: Alfredo Petrov specimen (on stokesite); XRD by Dr. Anthony Kampf.
Stibnite
Formula: Sb2S3
Localities: Reported from at least 8 localities in this region.
Stilpnomelane
Formula: (K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Stokesite
Formula: CaSn[Si3O9] · 2H2O
Reference: White (1973) What's new in minerals. Mineralogical record: 4: 275-276.; B. E. Prescott and K. Nassau (1978) Black Elbaite from Corrego Do Urucum, Minas Gerais, Brazil. Mineralogical Magazine 42:357-359; Atencio D, Carvalho F M S, Matioli P A (2004) Coutinhoite, a new thorium uranyl silicate hydrate, from Urucum Mine, Galiléia, Minas Gerais, Brazil. American Mineralogist 89, 721-724
Stolzite
Formula: Pb(WO4)
Strengite
Formula: FePO4 · 2H2O
Localities: Reported from at least 10 localities in this region.
Stromeyerite
Formula: AgCuS
Reference: Slezak, P. R., 2012, Geology, mneralogy, and geochenmistry of the Vazante Noorthern Extension zinc silicate deposit, Minas Gerais, Brazil: M.S. thesis, Queen’s University, Kingston, Ontario (pdf available at https://qspace.library.queensu.ca/handle/1974/7027?mode=full).
Stronadelphite
Formula: Sr5(PO4)3F
Strontianite
Formula: SrCO3
Strunzite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
Studtite
Formula: [(UO2)(O2)(H2O)2] · H2O
Reference: Tony Nikischer
Sudovikovite
Formula: PtSe2
Reference: MinMag 66:327-336; Kwitko, R., Cabral, A. R., Lehmann, B., Laflamme, J. G., Cabri, L. J., Criddle, A. J., & Galbiatti, H. F. (2002). Hongshiite, PtCu, from itabirite-hosted Au–Pd–Pt mineralization (jacutinga), Itabira district, Minas Gerais, Brazil. The Canadian Mineralogist, 40(2), 711-723.
Sulphur
Formula: S8
Switzerite
Formula: Mn2+3(PO4)2 · 7H2O
Reference: Tony Nickischer
Symplesite
Formula: Fe2+3(AsO4)2 · 8H2O
Reference: Sergio Varvello collection
Taenite
Formula: (Fe,Ni)
Tainiolite
Formula: KLiMg2(Si4O10)F2
Talc
Formula: Mg3Si4O10(OH)2
Localities: Reported from at least 27 localities in this region.
Talc var: Steatite
Formula: Mg3(Si4O10)(OH)2
'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
Localities: Reported from at least 12 localities in this region.
Tantalite-(Fe)
Formula: Fe2+Ta2O6
Tantalite-(Mn)
Formula: Mn2+Ta2O6
'Tapiolite'
Formula: (Fe,Mn)(Ta,Nb)2O6
Tapiolite-(Fe)
Formula: (Fe,Mn)(Ta,Nb)2O6