Amazonian Craton, South America Plate (original) (raw)

Description: As mineral phase of an inclusion within diamond, collected from gravel of Sorriso creek, a tributary of Aripuanã River, Mato Grosso, Brazil (11∘20′ S, 59∘11′ W )

References:

Sharygin, Victor V., Britvin, Sergey N., Kaminsky, Felix V., Wirth, Richard, Nigmatulina, Elena N., Yakovlev, Grigory A., Novoselov, Konstantin A., Murashko, Mikhail N. (2021) Ellinaite, CaCr2O4, a new natural post-spinel oxide from Hatrurim Basin, Israel, and Juína kimberlite field, Brazil. European Journal of Mineralogy, 33 (6) 727-742 doi:10.5194/ejm-33-727-2021

ⓘ Enstatite

Formula: Mg2Si2O6

References:

Atencio, D., Cunha, D., Moutinho, A. L. R., Zucolotto, M. E., Tosi, A. A., & Villaça, C. V. N. (2020). Parauapebas meteorite from Pará, Brazil, a “hammer” breccia chondrite. Brazilian Journal of Geology, 50.

ⓘ Ephesite

Formula: NaLiAl2(Al2Si2O10)(OH)2

ⓘ Epidote

Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)

Localities: Reported from at least 35 localities in this region.

ⓘ Eskolaite

Formula: Cr2O3

References:

Livingston, A., Jackson, B., Davidson, P.J. (1984) Grimaldiite, CrOOH, a second occurrence, from the Hiaca Mine, Colquechaca, Bolivia. Mineralogical Magazine, 48, 560-562.

ⓘ Eudialyte

Formula: Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2

ⓘ Euxenite-(Y)

Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6

ⓘ Fayalite

Formula: Fe2+2SiO4

References:

Campo-Rodríguez, Y. T., Schutesky, M. E., de Oliveira, C. G., & Whitehouse, M. J. (2021). Unveiling the polyphasic evolution of the Neoarchean IOCG Salobo deposit, Carajás Mineral Province, Brazil: Insights from magnetite trace elements and sulfur isotopes. Ore Geology Reviews, 104572.

ⓘ 'Fayalite-Forsterite Series'

Localities: Reported from at least 6 localities in this region.

ⓘ 'Feldspar Group'

Localities: Reported from at least 18 localities in this region.

ⓘ 'Feldspar Group var. Mesoperthite'

References:

ⓘ 'Feldspar Group var. Perthite'

Localities:

Água Boa pluton, Pitinga mine, Presidente Figueiredo, Amazonas, Brazil
Churuata, Amazonas, Venezuela
Massangana massif, Ariquemes, Rondônia, Brazil
San Miguel Mine, La Bella, Ñuflo de Chavez Province, Santa Cruz, Bolivia
Cristalino Cu-Au deposit, Curionópolis, Pará, Brazil

ⓘ Felsőbányaite

Formula: Al4(SO4)(OH)10 · 4H2O

ⓘ Ferberite

Formula: FeWO4

Localities:

Igarapé Bahia mine, Alemão Cu deposit, Parauapebas, Pará, Brazil
Breves Mine, Parauapebas, Pará, Brazil
Jatobá Deposit, Canaã dos Carajás, Pará, Brazil
Águas Claras Mine, Parauapebas, Pará, Brazil

ⓘ 'Fergusonite'

ⓘ Ferro-actinolite

Formula: ◻Ca2Fe2+5(Si8O22)(OH)2

ⓘ Ferro-edenite

Formula: NaCa2Fe2+5(Si7Al)O22(OH)2

References:

ⓘ Ferrosilite

Formula: Fe2+2Si2O6

References:

ⓘ Ferro-tschermakite

Formula: ◻{Ca2}{Fe2+3Al2}(Al2Si6O22)(OH)2

References:

ⓘ Ferrowyllieite ?

Formula: (Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO4)3

Description: Weak line on x-ray diffraction

ⓘ Fischesserite

Formula: Ag3AuSe2

References:

ⓘ Fletcherite

Formula: CuNi2S4

References:

ⓘ 'Florencite'

ⓘ Florencite-(Ce)

Formula: CeAl3(PO4)2(OH)6

ⓘ Florencite-(La)

Formula: LaAl3(PO4)2(OH)6

ⓘ Fluocerite-(Ce)

Formula: CeF3

References:

ⓘ Fluorapatite

Formula: Ca5(PO4)3F

Localities:

Araras, Federico Román, Pando, Bolivia
Cerro Manomo, Velasco Province, Santa Cruz, Bolivia
Salobo Mine, Marabá, Pará, Brazil
Jatobá Deposit, Canaã dos Carajás, Pará, Brazil
Serra Verde Mine, Curionópolis, Pará, Brazil

ⓘ Fluorapatite var. Carbonate-rich Fluorapatite

Formula: Ca5(PO4,CO3)3(F,O)

ⓘ Fluorite

Formula: CaF2

Localities: Reported from at least 25 localities in this region.

ⓘ Forsterite

Formula: Mg2SiO4

Localities:

Lago Grande Complex, Curionópolis, Pará, Brazil
Collier 4 kimberlite pipe, Juína kimberlite field, Mato Grosso, Brazil
São Luis river alluvials, Juína, Mato Grosso, Brazil
Icabarú River placers (Kilometer 88 District), Icabarú, Gran Sabana Municipality, Bolívar, Venezuela
Parauapebas meteorite, Parauapebas, Pará, Brazil

ⓘ Forsterite var. Peridot

Formula: Mg2SiO4

References:

Bulanova, Galina P., Walter, Michael J., Smith, Chris B., Kohn, Simon C., Armstrong, Lora S., Blundy, Jon, Gobbo, Luiz (2010) Mineral inclusions in sublithospheric diamonds from Collier 4 kimberlite pipe, Juina, Brazil: subducted protoliths, carbonated melts and primary kimberlite magmatism. Contributions to Mineralogy and Petrology, 160 (4) 489-510 doi:10.1007/s00410-010-0490-6

ⓘ Francoanellite

Formula: K3Al5(PO3OH)6(PO4)2 · 12H2O

References:

ⓘ Gagarinite-(Y)

Formula: NaCaYF6

References:

Bastos Neto, A.C., Pereira, V.P., Ronchi, L.H., de Lima, E.F., Frantz, J.C. (2009) The world-class Sn, Nb, Ta, F (Y, REE, Li) deposit and the massive cryolite associated with the albite-enriched facies of the Madeira A-type granite, Pitinga mining district, Amazonas State, Brazil. The Canadian Mineralogist: 47: 1329-1357.

ⓘ Gahnite

Formula: ZnAl2O4

ⓘ Galena

Formula: PbS

Localities: Reported from at least 32 localities in this region.

ⓘ 'Garnet Group'

Formula: X3Z2(SiO4)3

Localities: Reported from at least 13 localities in this region.

ⓘ Genthelvite

Formula: Be3Zn4(SiO4)3S

ⓘ Gersdorffite

Formula: NiAsS

ⓘ Gibbsite

Formula: Al(OH)3

Localities: Reported from at least 7 localities in this region.

ⓘ Glaucodot

Formula: (Co0.50Fe0.50)AsS

ⓘ Goethite

Formula: α-Fe3+O(OH)

Localities: Reported from at least 27 localities in this region.

ⓘ Gold

Formula: Au

Localities: Reported from at least 182 localities in this region.

ⓘ Gold var. Electrum

Formula: (Au,Ag)

Localities: Reported from at least 6 localities in this region.

ⓘ Gold var. Palladium-bearing Gold

Formula: (Au,Pd)

Localities:

Elefante prospect, Curionópolis, Pará, Brazil
Serra Pelada claims, Curionópolis, Pará, Brazil
Icabarú River placers (Kilometer 88 District), Icabarú, Gran Sabana Municipality, Bolívar, Venezuela ? (more information)

ⓘ Gold var. Porpezite

Formula: (Au,Pd)

References:

Tremsin, A. S., Rakovan, J., Shinohara, T., Kockelmann, W., Losko, A. S., & Vogel, S. C. (2017). Non-destructive study of bulk crystallinity and elemental composition of natural gold single crystal samples by energy-resolved neutron imaging. Scientific reports, 7(1), 1-9.

ⓘ Gorceixite

Formula: BaAl3(PO4)(PO3OH)(OH)6

Localities:

Issineru, Cuyuni-Mazaruni Region, Guyana
Cerro Impacto, Bolívar, Venezuela
Morro dos Seis Lagos, São Gabriel da Cachoeira, Amazonas, Brazil
Icabarú River placers (Kilometer 88 District), Icabarú, Gran Sabana Municipality, Bolívar, Venezuela

ⓘ Goyazite

Formula: SrAl3(PO4)(PO3OH)(OH)6

ⓘ Graphite

Formula: C

Localities: Reported from at least 8 localities in this region.

ⓘ Greenalite

Formula: (Fe2+,Fe3+)2-3Si2O5(OH)4

ⓘ Grimaldiite (TL)

Formula: CrO(OH)

Type Locality:

Description: River gravels.

References:

Livingston, A., Jackson, B., Davidson, P.J. (1984) Grimaldiite, CrOOH, a second occurrence, from the Hiaca Mine, Colquechaca, Bolivia. Mineralogical Magazine, 48, 560-562.

ⓘ Grossular

Formula: Ca3Al2(SiO4)3

References:

ⓘ Grunerite

Formula: ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2

Localities: Reported from at least 8 localities in this region.

ⓘ Grunerite var. Amosite

Formula: ◻{Fe2+2}{Fe2+5}(Si8O22)(OH)2

ⓘ Guyanaite (TL)

Formula: CrO(OH)

Description: River gravels.

ⓘ Gypsum

Formula: CaSO4 · 2H2O

Localities:

Cueva Guacamaya, Auyán-tepui (Auyán-tepuy; Ayan Tepui), Gran Sabana Municipality, Bolívar, Venezuela
Akopan-Dal Cin cave system, Chimantá Massif (Chimantha Massif), Gran Sabana Municipality, Bolívar, Venezuela
Cave S11D-0078, S11D Deposit, Serra Sul Project, Canaã dos Carajás, Pará, Brazil
Unnamed caves, Parauapebas, Pará, Brazil
Cave N4WS-0015, N4WS Pit, Carajás iron complex, Parauapebas, Pará, Brazil

ⓘ Halite

Formula: NaCl

ⓘ Hannayite

Formula: (NH4)2Mg3H4(PO4)4 · 8H2O

References:

ⓘ Hastingsite

Formula: NaCa2(Fe2+4Fe3+)(Si6Al2)O22(OH)2

Localities: Reported from at least 8 localities in this region.

ⓘ Hausmannite

Formula: Mn2+Mn3+2O4

ⓘ Haxonite

Formula: (Fe,Ni)23C6

ⓘ Hedleyite

Formula: Bi7Te3

ⓘ Helvine

Formula: Be3Mn2+4(SiO4)3S

References:

ⓘ Hematite

Formula: Fe2O3

Localities: Reported from at least 47 localities in this region.

ⓘ Hematite var. Martite

Formula: Fe2O3

Localities:

N4WS Pit, Carajás iron complex, Parauapebas, Pará, Brazil
Carajás iron complex, Parauapebas, Pará, Brazil
Cristalino Cu-Au deposit, Curionópolis, Pará, Brazil

ⓘ Hematite var. Specularite

Formula: Fe2O3

ⓘ Hercynite ?

Formula: Fe2+Al2O4

ⓘ Hessite

Formula: Ag2Te

Localities: Reported from at least 8 localities in this region.

ⓘ Hollandite

Formula: Ba(Mn4+6Mn3+2)O16

Localities:

Serra do Navio mines, Serra do Navio, Amapá, Brazil
Juininha river, Juína, Mato Grosso, Brazil
Morro dos Seis Lagos, São Gabriel da Cachoeira, Amazonas, Brazil
S11D Deposit, Serra Sul Project, Canaã dos Carajás, Pará, Brazil

ⓘ Hollingworthite

Formula: (Rh,Pt,Pd)AsS

ⓘ 'Hornblende Root Name Group'

Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2

Localities: Reported from at least 8 localities in this region.

ⓘ Hureaulite

Formula: Mn2+5(PO3OH)2(PO4)2 · 4H2O

References:

ⓘ Huttonite

Formula: ThSiO4

References:

ⓘ Hydrokenoralstonite

Formula: Na0.5(Al,Mg)2(F,OH)6 · H2O

References:

Minuzzii, O.R.R., Ferroni, J.M.T.M., Bastos Netoi, A.C. & Pereira, V. P. (2003) : Primeira Notícia da Descoberta de Waimirita e Atroarita, Dois Novos Minerais na Mina de Pitinga, AM, Brasil. Pesquisas em Geociências, 30 (1): 99-101

Atencio, D., Andrade, M.B., Bastos Neto, A.C., and Pereira, V.P. (2017): Ralstonite renamed hydrokenoralstonite, coulsellite renamed fluornatrocoulsellite, and their incorporation into the pyrochlore supergroup. Can. Mineral. 55, 115-120.

ⓘ 'Hydrophilite'

ⓘ Hydroxylapatite

Formula: Ca5(PO4)3(OH)

ⓘ Hydroxylapatite var. Carbonate-rich Hydroxylapatite

Formula: Ca5(PO4,CO3)3(OH,O)

ⓘ Ilmenite

Formula: Fe2+TiO3

Localities: Reported from at least 23 localities in this region.

ⓘ Ilvaite

Formula: CaFe3+Fe2+2(Si2O7)O(OH)

ⓘ Irarsite

Formula: (Ir,Ru,Rh,Pt)AsS

ⓘ Iron

Formula: Fe

Localities:

Chicória farm, Sorriso river, Juína, Mato Grosso, Brazil
Collier 4 kimberlite pipe, Juína kimberlite field, Mato Grosso, Brazil
Sorriso river, Juína, Mato Grosso, Brazil
Parauapebas meteorite, Parauapebas, Pará, Brazil

ⓘ Iron var. Kamacite

Formula: (Fe,Ni)

References:

ⓘ 'Iron-Platinum alloy'

Formula: (Pt,Fe)

References:

ⓘ Isoferroplatinum

Formula: Pt3Fe

References:

ⓘ Isomertieite

Formula: Pd11Sb2As2

ⓘ Jarosite

Formula: KFe3+3(SO4)2(OH)6

Localities:

Morro dos Seis Lagos, São Gabriel da Cachoeira, Amazonas, Brazil
Cave S11D-0078, S11D Deposit, Serra Sul Project, Canaã dos Carajás, Pará, Brazil
Unnamed caves, Parauapebas, Pará, Brazil

ⓘ 'Jasper'

Localities:

Puquio Norte Mine, Ñuflo de Chavez Province, Santa Cruz, Bolivia
Merume River, Rest of Region 8, Potaro-Siparuni Region, Guyana
Unnamed caves, Parauapebas, Pará, Brazil
Carajás iron complex, Parauapebas, Pará, Brazil
Cave S11D-0047, S11D Deposit, Serra Sul Project, Canaã dos Carajás, Pará, Brazil

ⓘ Jeffbenite (TL)

Formula: Mg3Al2Si3O12

ⓘ Kanoite

Formula: Mn2+(Mg,Mn2+)Si2O6

References:

ⓘ Kaolinite

Formula: Al2(Si2O5)(OH)4

Localities: Reported from at least 20 localities in this region.

ⓘ 'Kenomagnetite'

ⓘ 'K Feldspar'

Localities: Reported from at least 24 localities in this region.

ⓘ 'K Feldspar var. Adularia'

Formula: KAlSi3O8

Localities:

Davi mine, Penedo district, Itaituba, Pará, Brazil
Juma district, Apuí, Amazonas, Brazil
Joel claim, Creporizão district, Itaituba, Pará, Brazil
Batalha claim, Penedo district, Itaituba, Pará, Brazil

ⓘ Klockmannite

Formula: CuSe

References:

ⓘ Kotulskite

Formula: Pd(Te,Bi)2-x (x ≈ 0.4)

ⓘ Krut'aite

Formula: CuSe2

References:

ⓘ Kutnohorite

Formula: CaMn2+(CO3)2

ⓘ Kyanite

Formula: Al2(SiO4)O

Localities:

Bakhuis Mts., Sipaliwini District, Suriname
Collier 4 kimberlite pipe, Juína kimberlite field, Mato Grosso, Brazil
Don Mario mine, Cerro Pelado, Chiquitos Province, Santa Cruz, Bolivia
Furnas Southeast deposit, Parauapebas, Pará, Brazil

ⓘ Laurite

Formula: RuS2

ⓘ Lead

Formula: Pb

Description: octahedra

ⓘ Lepidocrocite

Formula: γ-Fe3+O(OH)

ⓘ Leucophosphite

Formula: KFe3+2(PO4)2(OH) · 2H2O

Localities:

Cave S11D-0078, S11D Deposit, Serra Sul Project, Canaã dos Carajás, Pará, Brazil
Unnamed caves, Parauapebas, Pará, Brazil
Cave N4WS-0015, N4WS Pit, Carajás iron complex, Parauapebas, Pará, Brazil

ⓘ 'Leucoxene'

ⓘ Libethenite

Formula: Cu2(PO4)(OH)

ⓘ 'Limonite'

Localities: Reported from at least 14 localities in this region.

ⓘ Linnaeite

Formula: Co2+Co3+2S4

References:

ⓘ Lithiophorite

Formula: (Al,Li)MnO2(OH)2

ⓘ Litochlebite

Formula: Ag2PbBi4Se8

References:

ⓘ Lizardite

Formula: Mg3(Si2O5)(OH)4

ⓘ Ludjibaite

Formula: Cu5(PO4)2(OH)4

ⓘ Ludlamite

Formula: Fe2+3(PO4)2 · 4H2O

ⓘ Mackinawite

Formula: FeS

ⓘ 'Mafic minerals'

ⓘ Maghemite

Formula: (Fe3+0.67◻0.33)Fe3+2O4

ⓘ Magnesiochromite

Formula: MgCr2O4

ⓘ Magnesioferrite

Formula: MgFe3+2O4

ⓘ Magnesio-hornblende

Formula: ◻Ca2(Mg4Al)(Si7Al)O22(OH)2

ⓘ Magnesite

Formula: MgCO3

Localities:

La Ceniza kimberlite, Quebrada Grande River, Guaniamo, Bolívar, Venezuela
Chicória farm, Sorriso river, Juína, Mato Grosso, Brazil
Sorriso river, Juína, Mato Grosso, Brazil
São Luis river alluvials, Juína, Mato Grosso, Brazil

ⓘ Magnetite

Formula: Fe2+Fe3+2O4

Localities: Reported from at least 57 localities in this region.

ⓘ Majakite ?

Formula: PdNiAs

ⓘ Majorite

Formula: Mg3(MgSi)(SiO4)3

ⓘ Malachite

Formula: Cu2(CO3)(OH)2

Localities:

Igarapé Bahia mine, Alemão Cu deposit, Parauapebas, Pará, Brazil
Alvo 118 Cu-Au deposit, Canaã dos Carajás, Pará, Brazil
Tucavaca MVT deposits, Tucavaca valley, Chiquitos Province, Santa Cruz, Bolivia
Don Mario mine, Cerro Pelado, Chiquitos Province, Santa Cruz, Bolivia
Serra Verde Mine, Curionópolis, Pará, Brazil

ⓘ 'Manganese Oxides'

ⓘ Marcasite

Formula: FeS2

ⓘ Mascagnite

Formula: (NH4)2SO4

ⓘ Matildite

Formula: AgBiS2

ⓘ Mcconnellite (TL)

Formula: CuCrO2

Type Locality:

Description: River gravels.

References:

Milton, C., Appleman, D.E., Appleman, M.H., Chao, E.C.T., Cuttitta, F., Dinnin, J.I., Dwornik, E.J., Ingram, B.L., Rose, Jr., H.J. (1976) Merumite – a complex assemblage of chromium minerals from Guyana. U.S. Geological Survey Professional Paper 887: 1–29.

Livingston, A., Jackson, B., Davidson, P.J. (1984) Grimaldiite, CrOOH, a second occurrence, from the Hiaca Mine, Colquechaca, Bolivia. Mineralogical Magazine, 48, 560-562.

ⓘ Mckinstryite

Formula: Ag5-xCu3+xS4

References:

ⓘ Melonite

Formula: NiTe2

Localities:

Fennell pit, Omai gold mine, Omai, Cuyuni-Mazaruni Region, Guyana
Omai gold mine, Omai, Cuyuni-Mazaruni Region, Guyana
Curral orebody, Sossego Mine, Canaã dos Carajás, Pará, Brazil
Sequeirinho Pit, Sossego Mine, Canaã dos Carajás, Pará, Brazil

ⓘ Merenskyite

Formula: PdTe2

References:

ⓘ Merrillite

Formula: Ca9NaMg(PO4)7

ⓘ Mertieite

Formula: Pd8Sb2.5As0.5

ⓘ 'Merumite' (FRL)

Description: Most of the merumite is found in this smaller river than Mreume River (Charles Milton et al., 1967.

ⓘ Merwinite

Formula: Ca3Mg(SiO4)2

References:

Zedgenizov, D.A., Shatskiy, A., Ragozin, A.L., Kagi, H., Shatsky, V.S. (2014): Merwinite in diamond from São Luiz, Brazil: A new mineral of the Ca-rich mantle environment. American Mineralogist: 99: 547-550.

ⓘ Meta-autunite

Formula: Ca(UO2)2(PO4)2 · 6H2O

ⓘ 'Mica Group'

Localities:

Omai gold mine, Omai, Cuyuni-Mazaruni Region, Guyana
Bom Futuro mina, Ariquemes, Rondônia, Brazil
Paraíba deposit, Baixão Novo creek, Peixoto de Azevedo, Mato Grosso, Brazil
Madeira pluton, Pitinga mine, Presidente Figueiredo, Amazonas, Brazil

ⓘ Michenerite

Formula: PdBiTe

References:

ⓘ Microcline

Formula: K(AlSi3O8)

Localities: Reported from at least 20 localities in this region.

ⓘ 'Microlite Group'

Formula: A2-mTa2X6-wZ-n

ⓘ Millerite

Formula: NiS

Localities: Reported from at least 8 localities in this region.

ⓘ Minnesotaite

Formula: Fe2+3Si4O10(OH)2

ⓘ Moissanite ?

Formula: SiC

ⓘ Molybdenite

Formula: MoS2

Localities: Reported from at least 23 localities in this region.

ⓘ 'Monazite'

Formula: REE(PO4)

Localities: Reported from at least 30 localities in this region.

ⓘ Monazite-(Ce)

Formula: Ce(PO4)

ⓘ Monetite

Formula: Ca(PO3OH)

References:

ⓘ Monticellite

Formula: CaMgSiO4

ⓘ Montmorillonite

Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O

ⓘ Mummeite

Formula: Cu0.58Ag3.11Pb1.10Bi6.65S13

ⓘ Muscovite

Formula: KAl2(AlSi3O10)(OH)2

Localities: Reported from at least 76 localities in this region.

ⓘ Muscovite var. Fuchsite

Formula: K(Al,Cr)3Si3O10(OH)2

Localities:

21 Grande Formation, São Benedito do Cupixi, Pedra Branca do Amapari, Amapá, Brazil
Dorlin, Maripasoula, Arrondissement of Saint-Laurent-du-Maroni, French Guiana, France
Don Mario mine, Cerro Pelado, Chiquitos Province, Santa Cruz, Bolivia
Castelo de Sonhos deposit, Castelo dos Sonhos, Altamira, Pará, Brazil

ⓘ Muscovite var. Illite

Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2

ⓘ Muscovite var. Mariposite

Formula: K(Al,Cr)2(Al,Si)4O10(OH)2

ⓘ Muscovite var. Phengite

Formula: KAl1.5(Mg,Fe)0.5(Al0.5Si3.5O10)(OH)2

Localities:

Juininha river, Juína, Mato Grosso, Brazil
Paraíba deposit, Baixão Novo creek, Peixoto de Azevedo, Mato Grosso, Brazil
Serrinha do Matupá claim, Peixotinho river, Peixoto de Azevedo, Mato Grosso, Brazil
El Callao mining district, El Callao Municipality, Bolívar, Venezuela
Mocambo Granite, São Félix do Xingu, Pará, Brazil

ⓘ Muscovite var. Sericite

Formula: KAl2(AlSi3O10)(OH)2

Localities: Reported from at least 48 localities in this region.

ⓘ Muthmannite

Formula: AuAgTe2

ⓘ Nacrite

Formula: Al2(Si2O5)(OH)4

ⓘ Nagyágite ?

Formula: [Pb3(Pb,Sb)3S6](Au,Te)3

ⓘ Nahcolite

Formula: NaHCO3

ⓘ Naldrettite

Formula: Pd2Sb

References:

ⓘ Naumannite

Formula: Ag2Se

References:

ⓘ Nepheline

Formula: Na3K(Al4Si4O16)

ⓘ Newberyite

Formula: Mg(PO3OH) · 3H2O

References:

ⓘ Nickeline

Formula: NiAs

References:

ⓘ Nissonite ?

Formula: Cu2Mg2(PO4)2(OH)2 · 5H2O

Description: Weak line on x-ray diffraction

ⓘ Nsutite

Formula: (Mn4+,Mn2+)(O,OH)2

ⓘ Nukundamite

Formula: Cu3.33Fe0.66S4

ⓘ Nyerereite

Formula: Na2Ca(CO3)2

ⓘ 'Oligoclase-Andesine'

References:

ⓘ 'Olivine Group'

Formula: M2SiO4

ⓘ Omphacite

Formula: (NaaCabFe2+cMgd)(AleFe3+fFe2+gMgh)Si2O6

ⓘ Opal

Formula: SiO2 · nH2O

Localities:

Cerro Autana Cave, Amazonas, Venezuela
Amazon Opal mine, Porto Velho, Rondônia, Brazil
Cueva Guacamaya, Auyán-tepui (Auyán-tepuy; Ayan Tepui), Gran Sabana Municipality, Bolívar, Venezuela
Akopan-Dal Cin cave system, Chimantá Massif (Chimantha Massif), Gran Sabana Municipality, Bolívar, Venezuela
Roraima Sur Cave System, Gran Sabana Municipality, Bolívar, Venezuela

ⓘ Opal var. Fire Opal

Formula: SiO2 · nH2O

ⓘ Orthoclase

Formula: K(AlSi3O8)

Localities: Reported from at least 6 localities in this region.

ⓘ Oskarssonite

Formula: AlF3

ⓘ Padmaite

Formula: PdBiSe

ⓘ Palladium

Formula: (Pd,Pt)

References:

ⓘ Palladseite

Formula: Pd17Se15

References:

Cabral, A. R., Lehmann, B., Kwitko, R., Costa, C. H. C. (2002) The Serra Pelada Au-Pd-Pt deposit, Carajas mineral province, northern Brazil: reconnaissance mineralogy and chemistry of very high grade palladian gold mineralization. Economic Geology, 97 (5) 1127-1138 doi:10.2113/gsecongeo.97.5.1127

ⓘ Parascandolaite

Formula: KMgF3

ⓘ 'Parisite'

Formula: Ca(Ce/La/Nd/REE)2(CO3)3F2

ⓘ Pentlandite

Formula: (NixFey)Σ9S8

Localities: Reported from at least 9 localities in this region.

ⓘ Periclase

Formula: MgO

Localities:

Guaniamo, Bolívar, Venezuela
Chicória farm, Sorriso river, Juína, Mato Grosso, Brazil
Juininha river, Juína, Mato Grosso, Brazil
Sorriso river, Juína, Mato Grosso, Brazil
São Luis river alluvials, Juína, Mato Grosso, Brazil

ⓘ Periclase var. Ferropericlase

Formula: (Mg,Fe)O

Localities:

Chicória farm, Sorriso river, Juína, Mato Grosso, Brazil
Juininha river, Juína, Mato Grosso, Brazil
Sorriso river, Juína, Mato Grosso, Brazil
São Luis river alluvials, Juína, Mato Grosso, Brazil

ⓘ 'Periclase Group'

ⓘ Perovskite

Formula: CaTiO3

Localities: Reported from at least 7 localities in this region.

ⓘ 'Petroleum'

References:

ⓘ 'Petroleum var. Bitumen'

References:

ⓘ Petzite

Formula: Ag3AuTe2

Localities:

Alvo 118 Cu-Au deposit, Canaã dos Carajás, Pará, Brazil
Fennell pit, Omai gold mine, Omai, Cuyuni-Mazaruni Region, Guyana
Omai gold mine, Omai, Cuyuni-Mazaruni Region, Guyana

ⓘ Phlogopite

Formula: KMg3(AlSi3O10)(OH)2

Localities: Reported from at least 7 localities in this region.

ⓘ Phosgenite

Formula: Pb2CO3Cl2

ⓘ Phosphosiderite

Formula: FePO4 · 2H2O

Localities:

ⓘ Pigeonite

Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi2]O8

Localities: Reported from at least 23 localities in this region.

Formula: Pt

Formula: PbO2

References:

Formula: Ni2+Ni3+2S4

References:

ⓘ Polylithionite

Formula: KLi2Al(Si4O10)(F,OH)2

ⓘ 'Polylithionite-Trilithionite Series'

ⓘ Potarite (TL)

Formula: PdHg

ⓘ Pseudomalachite

Formula: Cu5(PO4)2(OH)4

Localities:

Igarapé Bahia mine, Alemão Cu deposit, Parauapebas, Pará, Brazil
Alvo 118 Cu-Au deposit, Canaã dos Carajás, Pará, Brazil
Serra Verde Mine, Curionópolis, Pará, Brazil

ⓘ 'Psilomelane'

ⓘ 'Pyribole'

References:

ⓘ Pyrite

Formula: FeS2

Localities: Reported from at least 94 localities in this region.

ⓘ Pyrite var. Bravoite

Formula: (Fe,Ni)S2

ⓘ Pyroaurite

Formula: Mg6Fe3+2(OH)16[CO3] · 4H2O

ⓘ 'Pyrobitumen'

ⓘ 'Pyrochlore Group'

Formula: A2Nb2(O,OH)6Z

Localities: Reported from at least 6 localities in this region.

ⓘ 'Pyrochlore Group var. Plumbopyrochlore (of Skorobogatova et al.)'

Formula: A2Nb2(O,OH)6Z

References:

ⓘ 'Pyrochlore Group var. Uranpyrochlore (of Hogarth 1977)'

Formula: (Ca,U,Ce)2(Nb,Ti,Ta)2O6(OH,F)

References:

ⓘ 'Pyrochlore Supergroup'

Formula: A2-mD2X6-wZ1-n

ⓘ 'Pyrochlore Supergroup var. Betafite (of Hogarth 1977)'

Formula: (Ca,Na,U)2(Ti, Nb,Ta)2O6Z(OH)

ⓘ Pyrolusite

Formula: Mn4+O2

Localities: Reported from at least 6 localities in this region.

ⓘ Pyrope

Formula: Mg3Al2(SiO4)3

Localities:

Guaniamo, Bolívar, Venezuela
Prospect 39, Quebrada Grande River, Guaniamo, Bolívar, Venezuela
Icabarú River placers (Kilometer 88 District), Icabarú, Gran Sabana Municipality, Bolívar, Venezuela
Buritirama Mine, Marabá, Pará, Brazil

ⓘ Pyrophanite

Formula: Mn2+TiO3

Localities:

Serra do Navio mines, Serra do Navio, Amapá, Brazil
Curral orebody, Sossego Mine, Canaã dos Carajás, Pará, Brazil
Sequeirinho Pit, Sossego Mine, Canaã dos Carajás, Pará, Brazil

ⓘ Pyrophyllite

Formula: Al2Si4O10(OH)2

Localities:

La Verde Mine (Mina Verde), La Bella, Ñuflo de Chavez Province, Santa Cruz, Bolivia
Merume River, Rest of Region 8, Potaro-Siparuni Region, Guyana
Cueva Guacamaya, Auyán-tepui (Auyán-tepuy; Ayan Tepui), Gran Sabana Municipality, Bolívar, Venezuela
Roraima Sur Cave System, Gran Sabana Municipality, Bolívar, Venezuela

ⓘ Pyrosmalite-(Fe)

Formula: Fe2+8Si6O15(OH,Cl)10

ⓘ 'Pyrosmalite-(Fe)-Pyrosmalite-(Mn) Series'

References:

ⓘ 'Pyroxene Group'

Formula: ADSi2O6

Localities:

Collier 4 kimberlite pipe, Juína kimberlite field, Mato Grosso, Brazil
Salobo Mine, Marabá, Pará, Brazil
Cristalino Cu-Au deposit, Curionópolis, Pará, Brazil
Buritirama Mine, Marabá, Pará, Brazil

ⓘ Pyroxmangite

Formula: Mn2+SiO3

ⓘ Pyrrhotite

Formula: Fe1-xS

Localities: Reported from at least 34 localities in this region.

ⓘ Qitianlingite

Formula: (Fe,Mn)2(Nb,Ta)2WO10

References:

Tallarico, F. H. B., McNaughton, N. J., Groves, D. I., Fletcher, I. R., Figueiredo, B. R., Carvalho, J. B., ... & Nunes, A. R. (2004). Geological and SHRIMP II U-Pb constraints on the age and origin of the Breves Cu-Au-(W-Bi-Sn) deposit, Carajás, Brazil. Mineralium Deposita, 39(1), 68-86.

ⓘ Quartz

Formula: SiO2

Localities: Reported from at least 167 localities in this region.

ⓘ Quartz var. "Herkimer-style" Quartz

Formula: SiO2

ⓘ Quartz var. Amethyst

Formula: SiO2

Localities:

Alto Bonito claim, Garimpo das Pedras, Marabá, Pará, Brazil
La Encrucijada, Santa Ana de Velasco, Velasco Province, Santa Cruz, Bolivia
Motacu, Santa Ana de Velasco, Velasco Province, Santa Cruz, Bolivia
Cacharai mine, Porto Velho, Rondônia, Brazil

ⓘ Quartz var. Blue Quartz

Formula: SiO2

References:

ⓘ Quartz var. Chalcedony

Formula: SiO2

Localities:

Cerro Autana Cave, Amazonas, Venezuela
La Encrucijada, Santa Ana de Velasco, Velasco Province, Santa Cruz, Bolivia
Motacu, Santa Ana de Velasco, Velasco Province, Santa Cruz, Bolivia
Rincón del Tigre, Chiquitos Province, Santa Cruz, Bolivia
Sequeirinho Pit, Sossego Mine, Canaã dos Carajás, Pará, Brazil

ⓘ Quartz var. Chrome-Chalcedony

Formula: SiO2

Description: Locally worked from Cr-Ni-bearing laterites as a gemstone, and sold under the name "chiquitanita", named for the Chiquitania region of Santa Crus Department.

ⓘ Quartz var. Milky Quartz

Formula: SiO2

Localities:

Tocantinzinho deposit, Jardim do Ouro district, Itaituba, Pará, Brazil
Fennell pit, Omai gold mine, Omai, Cuyuni-Mazaruni Region, Guyana
São Domingos intrusion, Massangana Massif, Ariquemes, Rondônia, Brazil
Director Creek, Cuyuni-Mazaruni Region, Guyana

ⓘ Quartz var. Rock Crystal

Formula: SiO2

ⓘ Quartz var. Smoky Quartz

Formula: SiO2

Localities:

Fennell pit, Omai gold mine, Omai, Cuyuni-Mazaruni Region, Guyana
Carmen de Ruiz, San Ignacio de Velasco, Velasco Province, Santa Cruz, Bolivia
Motacu, Santa Ana de Velasco, Velasco Province, Santa Cruz, Bolivia

ⓘ Ramsbeckite

Formula: (Cu,Zn)15(SO4)4(OH)22 · 6H2O

ⓘ Ranciéite

Formula: (Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O

ⓘ 'Rhabdophane'

ⓘ Rhodochrosite

Formula: MnCO3

ⓘ Rhodonite

Formula: CaMn3Mn[Si5O15]

ⓘ Riebeckite

Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2

Localities:

Churuata, Amazonas, Venezuela
Cerro Manomo, Velasco Province, Santa Cruz, Bolivia
Pitinga mine, Presidente Figueiredo, Amazonas, Brazil
Madeira pluton, Pitinga mine, Presidente Figueiredo, Amazonas, Brazil

ⓘ Rodolicoite

Formula: Fe3+PO4

References:

ⓘ Romanèchite

Formula: (Ba,H2O)2(Mn4+,Mn3+)5O10

ⓘ Rossiantonite (TL)

Formula: Al3(PO4)(SO4)2(OH)2(H2O)14

Type Locality:

References:

Galli, E., Brigatti, M. F., Malferrari, D., Sauro, F., De Waele, J. (2013) Rossiantonite, Al3(PO4)(SO4)2(OH)2(H2O)10·4H2O, a new hydrated aluminum phosphate-sulfate mineral from Chimanta massif, Venezuela: Description and crystal structure. American Mineralogist, 98 (10) 1906-1913 doi:10.2138/am.2013.4393

ⓘ Rustenburgite

Formula: (Pt,Pd)3Sn

ⓘ Rutile

Formula: TiO2

Localities: Reported from at least 25 localities in this region.

ⓘ Rutile var. Ilmenorutile

Formula: (Ti,Nb)O2

ⓘ Rutile var. Niobium-bearing Rutile

Formula: (Ti,Nb)O2

ⓘ Safflorite

Formula: (Co,Ni,Fe)As2

ⓘ Salammoniac

Formula: NH4Cl

ⓘ Samarskite-(Y)

Formula: YFe3+Nb2O8

ⓘ Sanjuanite

Formula: Al2(PO4)(SO4)(OH) · 9H2O

References:

ⓘ 'Saussurite'

ⓘ 'Scapolite'

Localities: Reported from at least 8 localities in this region.

ⓘ Scheelite

Formula: Ca(WO4)

Localities: Reported from at least 6 localities in this region.

ⓘ 'Schirmerite'

Formula: PbAgBi3S6 - Pb3Ag1.5Bi3.5S9

ⓘ Schorl

Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)

ⓘ Scorodite

Formula: Fe3+AsO4 · 2H2O

ⓘ Senegalite

Formula: Al2(PO4)(OH)(OH)2 · H2O

ⓘ Sepiolite

Formula: Mg4(Si6O15)(OH)2 · 6H2O

References:

ⓘ 'Serpentine Subgroup'

Formula: D3[Si2O5](OH)4

Localities:

Lago Grande Complex, Curionópolis, Pará, Brazil
La Ceniza kimberlite, Quebrada Grande River, Guaniamo, Bolívar, Venezuela
Don Mario mine, Cerro Pelado, Chiquitos Province, Santa Cruz, Bolivia
Sossego Mine, Canaã dos Carajás, Pará, Brazil

ⓘ Siderite

Formula: FeCO3

Localities: Reported from at least 14 localities in this region.

ⓘ Siderophyllite

Formula: KFe2+2Al(Al2Si2O10)(OH)2

Localities:

Água Boa pluton, Pitinga mine, Presidente Figueiredo, Amazonas, Brazil
São Domingos intrusion, Massangana Massif, Ariquemes, Rondônia, Brazil
Mocambo Granite, São Félix do Xingu, Pará, Brazil

ⓘ Siegenite

Formula: CoNi2S4

Localities:

Salobo Mine, Marabá, Pará, Brazil
Serra Pelada claims, Curionópolis, Pará, Brazil
Curral orebody, Sossego Mine, Canaã dos Carajás, Pará, Brazil
Sequeirinho Pit, Sossego Mine, Canaã dos Carajás, Pará, Brazil

ⓘ Sillimanite

Formula: Al2(SiO4)O

ⓘ Silver

Formula: Ag

Localities: Reported from at least 6 localities in this region.

ⓘ 'Smectite Group'

Formula: A0.3D2-3[T4O10]Z2 · nH2O

Localities:

Alvo 118 Cu-Au deposit, Canaã dos Carajás, Pará, Brazil
Omai gold mine, Omai, Cuyuni-Mazaruni Region, Guyana
Paraíba deposit, Baixão Novo creek, Peixoto de Azevedo, Mato Grosso, Brazil
Madeira pluton, Pitinga mine, Presidente Figueiredo, Amazonas, Brazil
Maicuru alkaline complex, Maicuru range, Monte Alegre, Pará, Brazil

ⓘ Sodalite

Formula: Na4(Si3Al3)O12Cl

ⓘ Sperrylite

Formula: PtAs2

Localities:

Lago Grande Complex, Curionópolis, Pará, Brazil
Luanga Cr-Pt-Pd deposit, Curionópolis, Pará, Brazil
Jatobá Deposit, Canaã dos Carajás, Pará, Brazil
Serra Pelada claims, Curionópolis, Pará, Brazil

ⓘ Sperrylite var. Platarsite

Formula: Pt(As,S)2

ⓘ Spessartine

Formula: Mn2+3Al2(SiO4)3

Localities:

Serra do Navio mines, Serra do Navio, Amapá, Brazil
Tamanoir massif, French Guiana, France
Serra Pelada claims, Curionópolis, Pará, Brazil
Buritirama Mine, Marabá, Pará, Brazil

ⓘ Sphalerite

Formula: ZnS

Localities: Reported from at least 32 localities in this region.

ⓘ Spheniscidite

Formula: (NH4,K)(Fe3+,Al)2(PO4)2(OH) · 2H2O

Localities:

ⓘ Spinel

Formula: MgAl2O4

Localities: Reported from at least 8 localities in this region.

ⓘ Spinel var. Pleonaste

Formula: (Mg,Fe)Al2O4

References:

De Roever, E.W.F., Kieft, C., Murray, E., Klein, E., Drucker, W.H., and Moore, P.B. (1976) Surinamite, a new Mg-Al silicate from the Bakhuis Mountains, western Surinam. I. Description, occurrence, and conditions of formation II. X-ray crystallography and proposed crystal structure. American Mineralogist: 61: 193-199.

ⓘ 'Spinel Subgroup'

Formula: A2+D3+2O4

ⓘ Spodumene

Formula: LiAlSi2O6

ⓘ Stannite

Formula: Cu2FeSnS4

ⓘ Staurolite

Formula: Fe2+2Al9Si4O23(OH)

Localities:

Suponema, Santa Ana de Velasco, Velasco Province, Santa Cruz, Bolivia
Motacu, Santa Ana de Velasco, Velasco Province, Santa Cruz, Bolivia
Furnas Southeast deposit, Parauapebas, Pará, Brazil

ⓘ Stilpnomelane

Formula: (K,Ca,Na)(Fe,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O

Localities:

Igarapé Bahia mine, Alemão Cu deposit, Parauapebas, Pará, Brazil
Alvo 118 Cu-Au deposit, Canaã dos Carajás, Pará, Brazil
Gameleira Cu-Au deposit, Parauapebas, Pará, Brazil
Salobo Mine, Marabá, Pará, Brazil
Serra Verde Mine, Curionópolis, Pará, Brazil

ⓘ Stishovite

Formula: SiO2

ⓘ Strengite

Formula: FePO4 · 2H2O

Localities:

ⓘ Sudburyite

Formula: PdSb

References:

ⓘ Sudovikovite

Formula: PtSe2

References:

ⓘ Sulphur

Formula: S8

ⓘ Surinamite (TL)

Formula: (Mg,Fe)3Al4BeSi3O16

Type Locality:

References:

ⓘ Sveite (TL)

Formula: (K3-x◻x)Al8(NO3)6O8Cl4 · nH2O

Type Locality:

ⓘ Sylvanite

Formula: AgAuTe4

References:

Anthony, John Williams, Bideaux, Richard A., Bladh, Kenneth W., Nichols, Monte C. (1990) Handbook of Mineralogy Vol. 1 - Elements, Sulfides, Sulfosalts. Mineral Data Publishing, Tucson, Arizona.

ⓘ Sylvite

Formula: KCl

ⓘ 'Synchysite'

Formula: Ca(Ce/Nd/Y/REE)(CO3)2F

ⓘ Synchysite-(Y)

Formula: CaY(CO3)2F

ⓘ Taenite

Formula: (Fe,Ni)

References:

ⓘ Talc

Formula: Mg3Si4O10(OH)2

Localities: Reported from at least 9 localities in this region.

ⓘ 'Tantalite'

Formula: (Mn,Fe)(Ta,Nb)2O6

Localities:

Água Boa pluton, Pitinga mine, Presidente Figueiredo, Amazonas, Brazil
Bom Futuro mina, Ariquemes, Rondônia, Brazil
San Josema Mine, Los Patos pegmatite District, Velasco Province, Santa Cruz, Bolivia
Pitinga mine, Presidente Figueiredo, Amazonas, Brazil
Mocambo Granite, São Félix do Xingu, Pará, Brazil

ⓘ Taranakite

Formula: (K,NH4)Al3(PO4)3(OH) · 9H2O

Localities:

Cave S11D-0078, S11D Deposit, Serra Sul Project, Canaã dos Carajás, Pará, Brazil
Cave N4WS-0015, N4WS Pit, Carajás iron complex, Parauapebas, Pará, Brazil

ⓘ Tellurobismuthite

Formula: Bi2Te3

ⓘ 'Tennantite Subgroup'

Formula: Cu6(Cu4C2+2)As4S12S

ⓘ Tenorite

Formula: CuO

ⓘ Tephroite

Formula: Mn2+2SiO4

ⓘ Tetradymite

Formula: Bi2Te2S

ⓘ Tetraferriphlogopite

Formula: KMg3(Fe3+Si3O10)(OH,F)2

ⓘ 'Tetrahedrite Subgroup'

Formula: Cu6(Cu4C2+2)Sb4S12S

Localities:

Dorlin, Maripasoula, Arrondissement of Saint-Laurent-du-Maroni, French Guiana, France
Cabeça claim, Novo Astro claims, Nova Bandeirantes, Mato Grosso, Brazil
El Callao mining district, El Callao Municipality, Bolívar, Venezuela
Castelo de Sonhos deposit, Castelo dos Sonhos, Altamira, Pará, Brazil

ⓘ Tetrataenite

Formula: FeNi

References:

ⓘ Thomsenolite

Formula: NaCa[AlF6] · H2O

ⓘ Thorianite

Formula: ThO2

Localities:

Igarapé Bahia mine, Alemão Cu deposit, Parauapebas, Pará, Brazil
Curral orebody, Sossego Mine, Canaã dos Carajás, Pará, Brazil
Sequeirinho Pit, Sossego Mine, Canaã dos Carajás, Pará, Brazil

ⓘ Thorite

Formula: Th(SiO4)

Localities: Reported from at least 12 localities in this region.

ⓘ Thorite var. Uranothorite

Formula: (Th,U)SiO4

ⓘ Titanite

Formula: CaTi(SiO4)O

Localities: Reported from at least 22 localities in this region.

ⓘ Topaz

Formula: Al2(SiO4)(F,OH)2

Localities: Reported from at least 12 localities in this region.

ⓘ 'Tourmaline'

Formula: A D3G6 (T6O18)(BO3)3X3Z

Localities: Reported from at least 29 localities in this region.

ⓘ Tremolite

Formula: ◻Ca2Mg5(Si8O22)(OH)2

Localities:

Lago Grande Complex, Curionópolis, Pará, Brazil
Don Mario mine, Cerro Pelado, Chiquitos Province, Santa Cruz, Bolivia
Buritirama Mine, Marabá, Pará, Brazil

ⓘ Tritomite-(Y)

Formula: Y5(SiO4,BO4)3(O,OH,F)

ⓘ Troilite

Formula: FeS

References:

ⓘ Tulameenite

Formula: Pt2CuFe

ⓘ 'UM2002-03-O:AuHgPd'

Formula: ~(Pd,Au,Hg)9O5

References:

ⓘ 'UM2002-08-O:CuPd'

Formula: ~Pd4Cu5O9

References:

ⓘ 'UM2002-11-O:PdPtSe'

Formula: ~(Pd,Pt,Se)7O3

References:

ⓘ 'UM2002-30-Se:BiPd'

Formula: ~Pd3(Se,Bi)

References:

ⓘ 'UM2002-37-Se:HgPd'

Formula: ~(Pd,Hg)3Se

References:

ⓘ 'UM2002-38-Se:Pd'

Formula: Pd9Se2

References:

ⓘ 'UM2002-51-Se:PdPt'

Formula: Pd9PtSe2 or (Pd,Pt)5Se

References:

ⓘ 'Unnamed (Barium-Strontium Aluminium Fluoride)'

Formula: (Ba,Sr)AlF5

ⓘ 'Unnamed (Calcium Chromium Oxide Postspinel)'

Formula: CaCr2O4

ⓘ 'Unnamed (Iron Carbide)'

Formula: Fe7C3

ⓘ 'Unnamed (Iron Carbide II)'

Formula: Fe2C

ⓘ 'Unnamed (Iron Carbonitride)'

Formula: Fe9(N,C)2

ⓘ 'Unnamed (Iron Diphosphate)'

Formula: Fe2Fe5(P2O7)4

ⓘ 'Unnamed (Iron Nitride I)'

Formula: Fe3N

ⓘ 'Unnamed (Iron Nitride II)'

Formula: Fe2N

ⓘ 'Unnamed (Mg analogue of Xieite)'

Formula: MgCr2O4

ⓘ 'Unnamed (Orthorhombic Polymorph of Magnesium Oxide)'

Formula: MgO

ⓘ 'Unnamed (Sodium-Magnesium Phosphate)'

Formula: Na4Mg3(PO4)2(P2O7)

ⓘ Uraninite

Formula: UO2

Localities: Reported from at least 13 localities in this region.

ⓘ 'Uranmicrolite (of Hogarth 1977)'

Formula: (Ca,U,Na)2-x(Ta,Nb)2(O,OH)7

ⓘ Uranophane

Formula: Ca(UO2)2(SiO3OH)2 · 5H2O

ⓘ Vaesite

Formula: NiS2

Localities:

Cristalino Cu-Au deposit, Curionópolis, Pará, Brazil
Curral orebody, Sossego Mine, Canaã dos Carajás, Pará, Brazil
Sequeirinho Pit, Sossego Mine, Canaã dos Carajás, Pará, Brazil

ⓘ Variscite

Formula: AlPO4 · 2H2O

ⓘ Vashegyite

Formula: Al11(PO4)9(OH)6 · 38H2O

References:

ⓘ Vermiculite

Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O

Localities:

Alvo 118 Cu-Au deposit, Canaã dos Carajás, Pará, Brazil
Maicuru alkaline complex, Maicuru range, Monte Alegre, Pará, Brazil
Vermelho Project, Canaã dos Carajás, Pará, Brazil

ⓘ Violarite

Formula: Fe2+Ni3+2S4

Localities:

Chicória farm, Sorriso river, Juína, Mato Grosso, Brazil
Sorriso river, Juína, Mato Grosso, Brazil
Jaguar Nickel Sulphide Project, São Félix do Xingu, Pará, Brazil

ⓘ Vivianite

Formula: Fe2+Fe2+2(PO4)2 · 8H2O

ⓘ Volynskite

Formula: AgBiTe2

ⓘ Waimirite-(Y) (TL)

Formula: YF3

Type Locality:

References:

Atencio, D., Bastos Neto, A.C., Pereira, V.P., Ferron, J.T.M.M., Hoshino, M., Moriyama, T., Watanabe, Y., Miyawaki, R., Coutinho, J.M.V., Andrade, M.B., Domanik, K., Chukanov, N.V., Momma, K., Hirano, H., Tsunematsu, M. (2015): Waimirite-(Y), orthorhombic YF3, a new mineral from the Pitinga mine, Presidente Figueiredo, Amazonas, Brazil and from Jabal Tawlah, Saudi Arabia: description and crystal structure. Mineralogical Magazine, 79, 767-780.

ⓘ Wardite

Formula: NaAl3(PO4)2(OH)4 · 2H2O

ⓘ Wavellite

Formula: Al3(PO4)2(OH,F)3 · 5H2O

ⓘ Waylandite

Formula: BiAl3(PO4)2(OH)6

References:

ⓘ 'White mica'

Localities:

Bom Futuro mina, Ariquemes, Rondônia, Brazil
Paraíba deposit, Baixão Novo creek, Peixoto de Azevedo, Mato Grosso, Brazil
São Domingos intrusion, Massangana Massif, Ariquemes, Rondônia, Brazil

ⓘ 'Wolframite Group'

ⓘ Wollastonite

Formula: Ca3(Si3O9)

ⓘ Woodhouseite

Formula: CaAl3(PO4)(SO4)(OH)6

References:

ⓘ Wüstite

Formula: FeO

ⓘ 'Xenotime'

Localities: Reported from at least 9 localities in this region.

ⓘ Xenotime-(Y)

Formula: Y(PO4)

Localities: Reported from at least 7 localities in this region.

ⓘ Xieite

Formula: Fe2+Cr2O4

ⓘ Yarlongite ?

Formula: Cr4Fe4NiC4

ⓘ Yimengite

Formula: K(Cr,Ti,Fe,Mg)12O19

Formula: Zn

Formula: ZnCr2O4

Localities:

Bom Futuro mina, Ariquemes, Rondônia, Brazil
São Domingos intrusion, Massangana Massif, Ariquemes, Rondônia, Brazil
Pitinga mine, Presidente Figueiredo, Amazonas, Brazil

ⓘ Zircon

Formula: Zr(SiO4)

Localities: Reported from at least 27 localities in this region.

ⓘ Zircon var. Cyrtolite

Formula: Zr[(SiO4),(OH)4]

ⓘ Zircon var. Malacon

Formula: Zr(SiO4)

References: