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Conselheiro Pena pegmatite district, Conselheiro Pena, Minas Gerais, Brazil

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Latitude & Longitude (WGS84): 19° 10' 23'' South , 41° 28' 20'' West
Latitude & Longitude (decimal): -19.17333,-41.47250
GeoHash:G#: 7hddbm8eh
Locality type:Pegmatite Field
Köppen climate type:Aw : Tropical savanna, wet


The Conselheiro Pena Pegmatite District lies 50-100 km southeast of Governador Valadares where it stretches about 110 km from SW to NE. The district includes more than 205 pegmatites that have been mined. Over 50 minerals have been found in the district, including much gem-quality tourmaline, aquamarine, morganite, and kunzite besides industrial materials such as K-feldspar, albite, mica, and beryl ore. Many of the pegmatites are rich in phosphates, including the primary triphylite and montebrasite, and more than a dozen secondary phosphates for which the district is best known, most notably brazilianite and variscite. The district is also known for red rubellite and multi-color elbaite including blue-caps. Today the Conselheiro Pena pegmatites are mined mostly for industrial feldspar (mainly microcline), plus minerals for collectors.

Tectonically, the Conselheiro Pena Pegmatite District lies within the Araçuaí Orogen, a structurally complex crustal segment created when two microcontinents collided during the Brasiliano Orogeny to form a portion of the southern supercontinent of Gondwana. Two-mica granites of the Urucum suite were generated during that orogeny at ca. 582 Ma, and pegmatites evolved by fractional crystallization from those. Most pegmatite bodies in the district are tabular or lenticular, but a few are tear-drop shaped. The pegmatites solidified at a temperature of about 600 degrees C and under pressures of 4-5 kbar, corresponding to depths of 12-15 km (Nalini et al., 2015). They intruded mostly along steeply-dipping strike-slip shear zones in the metamorphics of the Rio Doce Group. These rocks include sillimanite-staurolite-garnet-mica schist with interbedded marble, metawackes, and metaquartzites that were originally marine sedimentary rocks deposited in a narrow seaway that once separated the two colliding microcontinents.

NK, rev. December 2017

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

Conselheiro Pena, Doce Valley, Minas Gerais, Brazil
Conselheiro Pena pegmatite district, Minas Gerais, Brazil
Conselheiro Pena, Minas Gerais, Brazil

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


15 valid minerals.

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!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Albite
Formula: Na(AlSi3O8)
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: 842.
'Apatite'
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: 842.
Beraunite
Formula: Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Reference: Mineralogical Record 24: 384-385
Bermanite
Formula: Mn2+Mn3+2(PO4)2(OH)2 · 4H2O
Reference: Mineralogical Record 24: 384-385
Brazilianite
Formula: NaAl3(PO4)2(OH)4
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: 842.
Cookeite
Formula: (Al2Li)Al2(AlSi3O10)(OH)8
Reference: Knut Eldjarn collection obtained from Carlos Barbosa
Euclase
Formula: BeAl(SiO4)(OH)
Reference: Richard Dale collection
Hureaulite
Formula: (Mn,Fe)5(PO4)2(HPO4)2 · 4H2O
Reference: Carlos Barbosa Specimen
Laueite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
Reference: Mineralogical Record 24: 384-385
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
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: 842.
'Pegmatite'
Reference: Automatically generated from locality name
Phosphosiderite
Formula: FePO4 · 2H2O
Reference: Mineralogical Record 24: 384-385
Rockbridgeite
Formula: Fe2+Fe3+4(PO4)3(OH)5
Reference: Mineralogical Record 24: 384-385
Stewartite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
Reference: Mineralogical Record 24: 384-385
Strengite
Formula: FePO4 · 2H2O
Reference: Mineralogical Record 24: 384-385
Strunzite
Formula: Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
Reference: Mineralogical Record 24: 384-385
Titanite ?
Formula: CaTi(SiO4)O
Reference: Andreas Brand and Howard Heitner specimens
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
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: 842.

List of minerals arranged by Strunz 10th Edition classification

Group 8 - Phosphates, Arsenates and Vanadates
'Beraunite'8.DC.27Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
'Bermanite'8.DC.20Mn2+Mn3+2(PO4)2(OH)2 · 4H2O
'Brazilianite'8.BK.05NaAl3(PO4)2(OH)4
'Hureaulite'8.CB.10(Mn,Fe)5(PO4)2(HPO4)2 · 4H2O
'Laueite'8.DC.30Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
'Phosphosiderite'8.CD.05FePO4 · 2H2O
'Rockbridgeite'8.BC.10Fe2+Fe3+4(PO4)3(OH)5
'Stewartite'8.DC.30Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
'Strengite'8.CD.10FePO4 · 2H2O
'Strunzite'8.DC.25Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
Group 9 - Silicates
'Albite'9.FA.35Na(AlSi3O8)
'Cookeite'9.EC.55(Al2Li)Al2(AlSi3O10)(OH)8
'Euclase'9.AE.10BeAl(SiO4)(OH)
'Muscovite'9.EC.15KAl2(AlSi3O10)(OH)2
'Titanite' ?9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Pegmatite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 39 - HYDRATED ACID PHOSPHATES,ARSENATES AND VANADATES
(AB)5[HXO4]2[XO4]2.xH2O
Hureaulite39.2.1.1(Mn,Fe)5(PO4)2(HPO4)2 · 4H2O
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
(AB)5(XO4)2·xH2O
Phosphosiderite40.4.3.2FePO4 · 2H2O
Strengite40.4.1.2FePO4 · 2H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Brazilianite41.5.7.1NaAl3(PO4)2(OH)4
(AB)5(XO4)3Zq
Rockbridgeite41.9.2.1Fe2+Fe3+4(PO4)3(OH)5
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)3(XO4)2Zq·xH2O
Beraunite42.11.16.1Fe2+Fe3+5(PO4)4(OH)5 · 6H2O
Bermanite42.11.17.1Mn2+Mn3+2(PO4)2(OH)2 · 4H2O
Laueite42.11.10.1Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
Stewartite42.11.10.2Mn2+Fe3+2(PO4)2(OH)2 · 8H2O
Strunzite42.11.9.1Mn2+Fe3+2(PO4)2(OH)2 · 6H2O
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Euclase52.2.1.1BeAl(SiO4)(OH)
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite ?52.4.3.1CaTi(SiO4)O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Sheets of 6-membered rings interlayered 1:1, 2:1, and octahedra
Cookeite71.4.1.2(Al2Li)Al2(AlSi3O10)(OH)8
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Pegmatite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
H BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
H BrazilianiteNaAl3(PO4)2(OH)4
H Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
H EuclaseBeAl(SiO4)(OH)
H Hureaulite(Mn,Fe)5(PO4)2(HPO4)2 · 4H2O
H LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
H MuscoviteKAl2(AlSi3O10)(OH)2
H PhosphosideriteFePO4 · 2H2O
H RockbridgeiteFe2+Fe43+(PO4)3(OH)5
H StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
H StrengiteFePO4 · 2H2O
H StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
LiLithium
Li Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
BeBeryllium
Be EuclaseBeAl(SiO4)(OH)
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
O AlbiteNa(AlSi3O8)
O BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
O BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
O BrazilianiteNaAl3(PO4)2(OH)4
O Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
O EuclaseBeAl(SiO4)(OH)
O Hureaulite(Mn,Fe)5(PO4)2(HPO4)2 · 4H2O
O LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
O MuscoviteKAl2(AlSi3O10)(OH)2
O PhosphosideriteFePO4 · 2H2O
O RockbridgeiteFe2+Fe43+(PO4)3(OH)5
O StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
O StrengiteFePO4 · 2H2O
O StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
O TitaniteCaTi(SiO4)O
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
NaSodium
Na AlbiteNa(AlSi3O8)
Na BrazilianiteNaAl3(PO4)2(OH)4
AlAluminium
Al AlbiteNa(AlSi3O8)
Al BrazilianiteNaAl3(PO4)2(OH)4
Al Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
Al EuclaseBeAl(SiO4)(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si AlbiteNa(AlSi3O8)
Si Cookeite(Al2Li)Al2(AlSi3O10)(OH)8
Si EuclaseBeAl(SiO4)(OH)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si TitaniteCaTi(SiO4)O
PPhosphorus
P BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
P BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
P BrazilianiteNaAl3(PO4)2(OH)4
P Hureaulite(Mn,Fe)5(PO4)2(HPO4)2 · 4H2O
P LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
P PhosphosideriteFePO4 · 2H2O
P RockbridgeiteFe2+Fe43+(PO4)3(OH)5
P StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
P StrengiteFePO4 · 2H2O
P StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti TitaniteCaTi(SiO4)O
MnManganese
Mn BermaniteMn2+Mn23+(PO4)2(OH)2 · 4H2O
Mn Hureaulite(Mn,Fe)5(PO4)2(HPO4)2 · 4H2O
Mn LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Mn StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Mn StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O
FeIron
Fe BerauniteFe2+Fe53+(PO4)4(OH)5 · 6H2O
Fe LaueiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Fe PhosphosideriteFePO4 · 2H2O
Fe RockbridgeiteFe2+Fe43+(PO4)3(OH)5
Fe StewartiteMn2+Fe23+(PO4)2(OH)2 · 8H2O
Fe StrengiteFePO4 · 2H2O
Fe StrunziteMn2+Fe23+(PO4)2(OH)2 · 6H2O

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Correia Neves, J. M., Pedrosa-Soares, A. C., Marciano, V. R. P. da R. O., 1986, A provincia pegmatitica oriental do Brasil à luz dos conhecimentos atuais: Revista Brasileira Geociencias., v. 16, p. 106-118.
Nalini, H. A., Jr., Machado, R., Bilal, E., 2015, Petrogenesis and tectonics of the Urucum granitic suite, Rio Doce Valley (Minas Gerais - Brazil): an example of syn to late collisional peraluminous magmatism associated with high-angle transcurrent shear zone: Brazilian Jour. Geol., v. 45, no. 1. (http://dx.doi.org/10.1590/23174889201500010009.)
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: 842.
Pedrosa-Soares, A., Chaves, M., and Scholz, R., 2009, Eastern Brazilian Pegmatite Province: 4th Internat. Symposium on Granitic Pegmatites, Field Trip Guide, p. 1-28. (http://www.researchgate.net/publication/234037120_Eastern_Brazilian_Pegmatite_Province.)
Robinson, G. W. & King, V. T. (1993): What's new in minerals? Annual world summary of mineral discoveries covering April 1992 through April 1993. Brazil. Mineralogical Record 24: 384-385
Scholz, R; et al. (2012): The secondary phosphate minerals from Conselheiro Pena Pegmatite District (Minas Gerais, Brazil): substitutions of triphylite and montebrasite. Para conhecer a Terra: memórias e notícias de Geociências no espaço lusófono. presented at the 2012. Coimbra, 2012.

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