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Equador, Borborema mineral province, Rio Grande do Norte, Brazili
Regional Level Types
Equador- not defined -
Borborema mineral provinceProvince
Rio Grande do NorteState
BrazilCountry

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Key


Located south of Parelhas.


Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

28 valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

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:

Albite
Formula: Na(AlSi3O8)
Albite var: Cleavelandite
Formula: Na(AlSi3O8)
Reference: Rob Lavinsky specimen
Alumotantite
Formula: AlTaO4
Reference: http://rruff.geo.arizona.edu/doclib/hom/parabariomicrolite.pdf.; Canadian Mineralogist (1986): 24: 655-663.
Bertrandite
Formula: Be4(Si2O7)(OH)2
Beryl
Formula: Be3Al2(Si6O18)
Localities: Reported from at least 6 localities in this region.
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Beryl var: Heliodor
Formula: Be3Al2(Si6O18)
Reference: Re-entry of old data
Beryl var: Morganite
Formula: Be3Al2(Si6O18)
Reference: Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (p. 32).
Beryllonite
Formula: NaBePO4
Reference: Palinkaš, S. S., Wegner, R., Čobić, A., Palinkaš, L. A., De Brito Barreto, S., Váczi, T., & Bermanec, V. (2014). The role of magmatic and hydrothermal processes in the evolution of Be-bearing pegmatites: Evidence from beryl and its breakdown products. American Mineralogist, 99(2-3), 424-432.
Bismoclite
Formula: BiOCl
Reference: Re-entry of old data; Färber, G. & Witzke, T. (2011): Exotische Pseudomorphosen aus Brasilien: Waylandit nach Wismutglanz. Lapis 36 (5), 42-43.
Bismuth
Formula: Bi
Reference: Palinkaš, S. S., Wegner, R., Čobić, A., Palinkaš, L. A., De Brito Barreto, S., Váczi, T., & Bermanec, V. (2014). The role of magmatic and hydrothermal processes in the evolution of Be-bearing pegmatites: Evidence from beryl and its breakdown products. American Mineralogist, 99(2-3), 424-432.
Bismuthinite
Formula: Bi2S3
Bismutite
Formula: (BiO)2CO3
Reference: Färber, G. & Witzke, T. (2011): Exotische Pseudomorphosen aus Brasilien: Waylandit nach Wismutglanz. Lapis 36 (5), 42-43.
'Bismutomicrolite (of Hogarth 1977)'
Brazilianite
Formula: NaAl3(PO4)2(OH)4
Cassiterite
Formula: SnO2
Reference: Re-entry of old data
Columbite-(Fe)
Formula: Fe2+Nb2O6
Description: Chemically near the border of manganocolumbite.
Reference: Baumgartner et al (2006), Canadian Mineralogist: 44: 69-86.
'Columbite-(Fe)-Columbite-(Mn) Series'
Columbite-(Mn)
Formula: Mn2+Nb2O6
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Re-entry of old data
Euclase
Formula: BeAl(SiO4)(OH)
'Hydrokenomicrolite-3R' (FRL)
Formula: 2Ta2[O,(OH)]6(H2O)
Type Locality:
Description: First described as parabariomicrolite (Ercit et al., 1986). Discredited by IMA in 2016 and showed to be identical to hydrokenomicrolite-3R (Atencio, 2016).
Reference: Ercit, T. S., Hawthorne, F. C., Cerný, P. (1986) Parabariomicrolite, a new species, and its structural relationship to the pyrochlore group, The Canadian Mineralogist 24: 655-663; Atencio, D. (2016): Parabariomicrolite discredited as identical to hydrokenomicrolite-3R. Mineralogical Magazine, 80: 923-924.
Kaolinite
Formula: Al2(Si2O5)(OH)4
'K Feldspar'
Reference: Baumgartner et al (2006), Canadian Mineralogist: 44: 69-86.
'Lepidolite'
Reference: Beurlen, H., Da Silva, M.R.R., Thomas, R., Soares, D.R., and Olivier, P. (2008): Nb–Ta–(Ti–Sn) oxide mineral chemistry as tracer of rare element granitic pegmatite fractionation in the Borborema Province, Northeastern Brazil. Mineralium Deposita 43, 207-228.
Microcline
Formula: K(AlSi3O8)
'Microlite Group'
Formula: A2-mTa2X6-wZ-n
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Natrotantite
Formula: Na2Ta4O11
Reference: http://rruff.geo.arizona.edu/doclib/hom/parabariomicrolite.pdf.; Canadian Mineralogist (1986): 24: 655-663.
Petalite
Formula: LiAl(Si4O10)
Reference: http://rruff.geo.arizona.edu/doclib/hom/parabariomicrolite.pdf.; Canadian Mineralogist (1986): 24: 655-663.
Phosphuranylite
Formula: (H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
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: 876.
Quartz
Formula: SiO2
Quartz var: Rose Quartz
Formula: SiO2
Quartz var: Smoky Quartz
Formula: SiO2
Reference: Fernando Brederodes photo and collection, photo Id-649567
Simpsonite
Formula: Al4(Ta,Nb)3O13(OH,F)
Reference: Rob Lavinsky; http://rruff.geo.arizona.edu/doclib/hom/parabariomicrolite.pdf.; Mineralogical Magazine 1963 33 : 458-466; Canadian Mineralogist (1986): 24: 655-663.; Beurlen, H., Da Silva, M.R.R., Thomas, R., Soares, D.R., and Olivier, P. (2008): Nb–Ta–(Ti–Sn) oxide mineral chemistry as tracer of rare element granitic pegmatite fractionation in the Borborema Province, Northeastern Brazil. Mineralium Deposita 43, 207-228.; Beurlen, H., Soares, D. R., Thomas, R., Prado-Borges, L. E., & Castro, C. D. (2005). Mineral chemistry of tantalate species new in the Borborema Pegmatitic Province, Northeast Brazil. Anais da Academia Brasileira de Ciências, 77(1), 169-182
Spodumene
Formula: LiAlSi2O6
Reference: http://rruff.geo.arizona.edu/doclib/hom/parabariomicrolite.pdf.; Beurlen, H., Da Silva, M.R.R., Thomas, R., Soares, D.R., and Olivier, P. (2008): Nb–Ta–(Ti–Sn) oxide mineral chemistry as tracer of rare element granitic pegmatite fractionation in the Borborema Province, Northeastern Brazil. Mineralium Deposita 43, 207-228.
Stibiotantalite
Formula: Sb(Ta,Nb)O4
Reference: http://rruff.geo.arizona.edu/doclib/hom/parabariomicrolite.pdf.; Canadian Mineralogist (1986): 24: 655-663.
'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
Reference: Palinkaš, S. S., Wegner, R., Čobić, A., Palinkaš, L. A., De Brito Barreto, S., Váczi, T., & Bermanec, V. (2014). The role of magmatic and hydrothermal processes in the evolution of Be-bearing pegmatites: Evidence from beryl and its breakdown products. American Mineralogist, 99(2-3), 424-432.
Tantalite-(Mn)
Formula: Mn2+Ta2O6
Tapiolite-(Fe)
Formula: (Fe,Mn)(Ta,Nb)2O6
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Waylandite
Formula: BiAl3(PO4)2(OH)6
Reference: Gunnar Färber specimens; - Färber, G. & Witzke, T. (2011): Exotische Pseudomorphosen aus Brasilien: Waylandit nach Wismutglanz. Lapis 36 (5), 42-43.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Bismuth1.CA.05Bi
Group 2 - Sulphides and Sulfosalts
Bismuthinite2.DB.05Bi2S3
Group 3 - Halides
Bismoclite3.DC.25BiOCl
Group 4 - Oxides and Hydroxides
Alumotantite4.DB.55AlTaO4
'Bismutomicrolite (of Hogarth 1977)'4.DH.15
Cassiterite4.DB.05SnO2
Columbite-(Fe)4.DB.35Fe2+Nb2O6
Columbite-(Mn)4.DB.35Mn2+Nb2O6
'Microlite Group'4.00.A2-mTa2X6-wZ-n
Natrotantite4.DJ.05Na2Ta4O11
Quartz4.DA.05SiO2
var: Rose Quartz4.DA.05SiO2
var: Smoky Quartz4.DA.05SiO2
Simpsonite4.DC.10Al4(Ta,Nb)3O13(OH,F)
Stibiotantalite4.DE.30Sb(Ta,Nb)O4
Tantalite-(Mn)4.DB.35Mn2+Ta2O6
Tapiolite-(Fe)4.DB.10(Fe,Mn)(Ta,Nb)2O6
Group 5 - Nitrates and Carbonates
Bismutite5.BE.25(BiO)2CO3
Group 8 - Phosphates, Arsenates and Vanadates
Beryllonite8.AA.10NaBePO4
Brazilianite8.BK.05NaAl3(PO4)2(OH)4
Phosphuranylite8.EC.10(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Waylandite8.BL.13BiAl3(PO4)2(OH)6
Group 9 - Silicates
Albite9.FA.35Na(AlSi3O8)
var: Cleavelandite9.FA.35Na(AlSi3O8)
Bertrandite9.BD.05Be4(Si2O7)(OH)2
Beryl9.CJ.05Be3Al2(Si6O18)
var: Aquamarine9.CJ.05Be3Al2Si6O18
var: Heliodor9.CJ.05Be3Al2(Si6O18)
var: Morganite9.CJ.05Be3Al2(Si6O18)
Elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Euclase9.AE.10BeAl(SiO4)(OH)
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Microcline9.FA.30K(AlSi3O8)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Petalite9.EF.05LiAl(Si4O10)
Spodumene9.DA.30LiAlSi2O6
Unclassified Minerals, Rocks, etc.
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Hydrokenomicrolite-3R' (TL)-2Ta2[O,(OH)]6(H2O)
'K Feldspar'-
'Lepidolite'-
'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:3
Bismuthinite2.11.2.3Bi2S3
Group 4 - SIMPLE OXIDES
AX2
Cassiterite4.4.1.5SnO2
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
ABO4
Alumotantite8.1.7.1AlTaO4
Stibiotantalite8.1.6.2Sb(Ta,Nb)O4
A2B2O6(O,OH,F)
'Bismutomicrolite (of Hogarth 1977)'8.2.2.5
'Microlite Group'8.2.2.1A2-mTa2X6-wZ-n
AB2O6
Columbite-(Fe)8.3.2.2Fe2+Nb2O6
Columbite-(Mn)8.3.2.4Mn2+Nb2O6
Tantalite-(Mn)8.3.2.3Mn2+Ta2O6
Tapiolite-(Fe)8.3.1.1(Fe,Mn)(Ta,Nb)2O6
(AB)6O11·nH2O
Natrotantite8.6.2.2Na2Ta4O11
Miscellaneous
Simpsonite8.7.5.1Al4(Ta,Nb)3O13(OH,F)
Group 10 - OXYHALIDES AND HYDROXYHALIDES
A(O,OH)Xq
Bismoclite10.2.1.2BiOCl
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Bismutite16a.3.5.1(BiO)2CO3
Group 38 - ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
ABXO4
Beryllonite38.1.5.1NaBePO4
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Brazilianite41.5.7.1NaAl3(PO4)2(OH)4
Waylandite41.5.12.1BiAl3(PO4)2(OH)6
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)2Zq·xH2O
Phosphuranylite42.4.8.1(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
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)
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Bertrandite56.1.1.1Be4(Si2O7)(OH)2
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Six-Membered Rings with borate groups
Elbaite61.3.1.8Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Spodumene65.1.4.1LiAlSi2O6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with tetrahedral Al cross-linking
Petalite72.6.1.1LiAl(Si4O10)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Microcline76.1.1.5K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
Albite
var: Cleavelandite
-Na(AlSi3O8)
Beryl
var: Aquamarine
-Be3Al2Si6O18
var: Heliodor-Be3Al2(Si6O18)
var: Morganite-Be3Al2(Si6O18)
'Columbite-(Fe)-Columbite-(Mn) Series'-
'Hydrokenomicrolite-3R' (FRL)-2Ta2[O,(OH)]6(H2O)
'K Feldspar'-
Kaolinite-Al2(Si2O5)(OH)4
'Lepidolite'-
Quartz
var: Rose Quartz
-SiO2
var: Smoky Quartz-SiO2
'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H Hydrokenomicrolite-3R2Ta2[O,(OH)]6(H2O)
H SimpsoniteAl4(Ta,Nb)3O13(OH,F)
H Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
H EuclaseBeAl(SiO4)(OH)
H BrazilianiteNaAl3(PO4)2(OH)4
H ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
H WaylanditeBiAl3(PO4)2(OH)6
H KaoliniteAl2(Si2O5)(OH)4
H BertranditeBe4(Si2O7)(OH)2
LiLithium
Li SpodumeneLiAlSi2O6
Li PetaliteLiAl(Si4O10)
Li ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
BeBeryllium
Be BerylBe3Al2(Si6O18)
Be EuclaseBeAl(SiO4)(OH)
Be Beryl (var: Aquamarine)Be3Al2Si6O18
Be Beryl (var: Heliodor)Be3Al2(Si6O18)
Be BertranditeBe4(Si2O7)(OH)2
Be Beryl (var: Morganite)Be3Al2(Si6O18)
Be BerylloniteNaBePO4
BBoron
B ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
CCarbon
C Bismutite(BiO)2CO3
OOxygen
O Hydrokenomicrolite-3R2Ta2[O,(OH)]6(H2O)
O SimpsoniteAl4(Ta,Nb)3O13(OH,F)
O QuartzSiO2
O BerylBe3Al2(Si6O18)
O SpodumeneLiAlSi2O6
O NatrotantiteNa2Ta4O11
O AlumotantiteAlTaO4
O StibiotantaliteSb(Ta,Nb)O4
O Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
O EuclaseBeAl(SiO4)(OH)
O Tantalite-(Mn)Mn2+Ta2O6
O Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6
O BrazilianiteNaAl3(PO4)2(OH)4
O PetaliteLiAl(Si4O10)
O Columbite-(Mn)Mn2+Nb2O6
O Columbite-(Fe)Fe2+Nb2O6
O Beryl (var: Aquamarine)Be3Al2Si6O18
O Beryl (var: Heliodor)Be3Al2(Si6O18)
O BismocliteBiOCl
O CassiteriteSnO2
O ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
O AlbiteNa(AlSi3O8)
O MicroclineK(AlSi3O8)
O MuscoviteKAl2(AlSi3O10)(OH)2
O Albite (var: Cleavelandite)Na(AlSi3O8)
O Bismutite(BiO)2CO3
O WaylanditeBiAl3(PO4)2(OH)6
O KaoliniteAl2(Si2O5)(OH)4
O BertranditeBe4(Si2O7)(OH)2
O Quartz (var: Smoky Quartz)SiO2
O Beryl (var: Morganite)Be3Al2(Si6O18)
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O Quartz (var: Rose Quartz)SiO2
O BerylloniteNaBePO4
O Tantalite(Mn,Fe)(Ta,Nb)2O6
NaSodium
Na NatrotantiteNa2Ta4O11
Na BrazilianiteNaAl3(PO4)2(OH)4
Na ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Na AlbiteNa(AlSi3O8)
Na Albite (var: Cleavelandite)Na(AlSi3O8)
Na BerylloniteNaBePO4
AlAluminium
Al SimpsoniteAl4(Ta,Nb)3O13(OH,F)
Al BerylBe3Al2(Si6O18)
Al SpodumeneLiAlSi2O6
Al AlumotantiteAlTaO4
Al EuclaseBeAl(SiO4)(OH)
Al BrazilianiteNaAl3(PO4)2(OH)4
Al PetaliteLiAl(Si4O10)
Al Beryl (var: Aquamarine)Be3Al2Si6O18
Al Beryl (var: Heliodor)Be3Al2(Si6O18)
Al ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Al AlbiteNa(AlSi3O8)
Al MicroclineK(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Albite (var: Cleavelandite)Na(AlSi3O8)
Al WaylanditeBiAl3(PO4)2(OH)6
Al KaoliniteAl2(Si2O5)(OH)4
Al Beryl (var: Morganite)Be3Al2(Si6O18)
SiSilicon
Si QuartzSiO2
Si BerylBe3Al2(Si6O18)
Si SpodumeneLiAlSi2O6
Si EuclaseBeAl(SiO4)(OH)
Si PetaliteLiAl(Si4O10)
Si Beryl (var: Aquamarine)Be3Al2Si6O18
Si Beryl (var: Heliodor)Be3Al2(Si6O18)
Si ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Si AlbiteNa(AlSi3O8)
Si MicroclineK(AlSi3O8)
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si Albite (var: Cleavelandite)Na(AlSi3O8)
Si KaoliniteAl2(Si2O5)(OH)4
Si BertranditeBe4(Si2O7)(OH)2
Si Quartz (var: Smoky Quartz)SiO2
Si Beryl (var: Morganite)Be3Al2(Si6O18)
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si Quartz (var: Rose Quartz)SiO2
PPhosphorus
P Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
P BrazilianiteNaAl3(PO4)2(OH)4
P WaylanditeBiAl3(PO4)2(OH)6
P BerylloniteNaBePO4
SSulfur
S BismuthiniteBi2S3
ClChlorine
Cl BismocliteBiOCl
KPotassium
K Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
K MicroclineK(AlSi3O8)
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
MnManganese
Mn Tantalite-(Mn)Mn2+Ta2O6
Mn Columbite-(Mn)Mn2+Nb2O6
Mn Tantalite(Mn,Fe)(Ta,Nb)2O6
FeIron
Fe Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6
Fe Columbite-(Fe)Fe2+Nb2O6
Fe Tantalite(Mn,Fe)(Ta,Nb)2O6
NbNiobium
Nb Columbite-(Mn)Mn2+Nb2O6
Nb Columbite-(Fe)Fe2+Nb2O6
Nb Tantalite(Mn,Fe)(Ta,Nb)2O6
SnTin
Sn CassiteriteSnO2
SbAntimony
Sb StibiotantaliteSb(Ta,Nb)O4
TaTantalum
Ta Hydrokenomicrolite-3R2Ta2[O,(OH)]6(H2O)
Ta SimpsoniteAl4(Ta,Nb)3O13(OH,F)
Ta Microlite GroupA2-mTa2X6-wZ-n
Ta NatrotantiteNa2Ta4O11
Ta AlumotantiteAlTaO4
Ta StibiotantaliteSb(Ta,Nb)O4
Ta Tantalite-(Mn)Mn2+Ta2O6
Ta Tapiolite-(Fe)(Fe,Mn)(Ta,Nb)2O6
Ta Tantalite(Mn,Fe)(Ta,Nb)2O6
BiBismuth
Bi BismocliteBiOCl
Bi Bismutite(BiO)2CO3
Bi WaylanditeBiAl3(PO4)2(OH)6
Bi BismuthiniteBi2S3
Bi BismuthBi
UUranium
U Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 28, 32).

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