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Posse Mine, Mara Rosa, Mara Rosa district, GoiΓ‘s, Brazili
Regional Level Types
Posse MineMine (Flooded)
Mara RosaMunicipality
Mara Rosa districtMining District
GoiΓ‘sState
BrazilCountry

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Latitude & Longitude (WGS84):
13° 58' 26'' South , 49° 10' 45'' West
Latitude & Longitude (decimal):
-13.97415,-49.17920
GeoHash:
G#: 6vt08bhf9
GRN:
S10W34
Type:
Mine (Flooded) - last checked 2023
KΓΆppen climate type:
Aw : Tropical savanna, wet
Mindat Locality ID:
30845
Long-form identifier:
mindat:1:2:30845:5
GUID (UUID V4):
a515b72f-5abb-4d99-ac25-41091982c389
Name(s) in local language(s):
Mina de ouro da Posse


A former small gold deposit of probable epigenetic origin, hosted in felsic volcanic and sedimentary rocks. The low-grade ore occurs along late structures that post-date peak metamorphism of Neoproterozoic age. Most of the gold is intergrown with frohbergite.

The deposit was worked by Western Mining Corp. during the 1990s.

A number of stockpiles of ore remain with some partially revegetated.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


21 valid minerals.

Detailed Mineral List:

β“˜ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜ Albite
Formula: Na(AlSi3O8)
β“˜ 'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
β“˜ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ Calaverite
Formula: AuTe2
β“˜ Calcite
Formula: CaCO3
β“˜ Chalcopyrite
Formula: CuFeS2
β“˜ 'Chlorite Group'
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜ Frohbergite
Formula: FeTe2
β“˜ 'Garnet Group'
Formula: X3Z2(SiO4)3
β“˜ Goethite
Formula: Ξ±-Fe3+O(OH)
β“˜ Gold
Formula: Au
β“˜ Ilmenite
Formula: Fe2+TiO3
β“˜ Kaolinite
Formula: Al2(Si2O5)(OH)4
β“˜ Kyanite
Formula: Al2(SiO4)O
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
β“˜ Microcline
Formula: K(AlSi3O8)
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Muscovite var. Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
β“˜ Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
β“˜ Pyrite
Formula: FeS2
β“˜ Pyrrhotite
Formula: Fe1-xS
β“˜ Quartz
Formula: SiO2
β“˜ Sillimanite
Formula: Al2(SiO4)O
β“˜ Titanite
Formula: CaTi(SiO4)O
β“˜ Zircon
Formula: Zr(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Pyrrhotite2.CC.10Fe1-xS
β“˜Calaverite2.EA.10AuTe2
β“˜Pyrite2.EB.05aFeS2
β“˜Frohbergite2.EB.10aFeTe2
Group 4 - Oxides and Hydroxides
β“˜Goethite4.00.Ξ±-Fe3+O(OH)
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Ilmenite4.CB.05Fe2+TiO3
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
Group 9 - Silicates
β“˜Zircon9.AD.30Zr(SiO4)
β“˜Sillimanite9.AF.05Al2(SiO4)O
β“˜Kyanite9.AF.15Al2(SiO4)O
β“˜Titanite9.AG.15CaTi(SiO4)O
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Actinolite9.DE.10β—»Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Illite9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
β“˜var. Fuchsite9.EC.15K(Al,Cr)3Si3O10(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Kaolinite9.ED.05Al2(Si2O5)(OH)4
β“˜Microcline9.FA.30K(AlSi3O8)
β“˜Albite9.FA.35Na(AlSi3O8)
Unclassified
β“˜'Chlorite Group'-
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
β“˜'Garnet Group'-X3Z2(SiO4)3
β“˜'Apatite'-Ca5(PO4)3(Cl/F/OH)
β“˜'Allanite Group'-(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

List of minerals for each chemical element

HHydrogen
Hβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Hβ“˜ GoethiteΞ±-Fe3+O(OH)
Hβ“˜ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Hβ“˜ KaoliniteAl2(Si2O5)(OH)4
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Hβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Hβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
CCarbon
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oβ“˜ AlbiteNa(AlSi3O8)
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ CalciteCaCO3
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Oβ“˜ GoethiteΞ±-Fe3+O(OH)
Oβ“˜ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Oβ“˜ IlmeniteFe2+TiO3
Oβ“˜ KaoliniteAl2(Si2O5)(OH)4
Oβ“˜ KyaniteAl2(SiO4)O
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ MicroclineK(AlSi3O8)
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ SillimaniteAl2(SiO4)O
Oβ“˜ TitaniteCaTi(SiO4)O
Oβ“˜ ZirconZr(SiO4)
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Oβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oβ“˜ Garnet GroupX3Z2(SiO4)3
Oβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
Oβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
FFluorine
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naβ“˜ AlbiteNa(AlSi3O8)
Naβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alβ“˜ AlbiteNa(AlSi3O8)
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Alβ“˜ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Alβ“˜ KaoliniteAl2(Si2O5)(OH)4
Alβ“˜ KyaniteAl2(SiO4)O
Alβ“˜ MicroclineK(AlSi3O8)
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ SillimaniteAl2(SiO4)O
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Alβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siβ“˜ AlbiteNa(AlSi3O8)
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Siβ“˜ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Siβ“˜ KaoliniteAl2(Si2O5)(OH)4
Siβ“˜ KyaniteAl2(SiO4)O
Siβ“˜ MicroclineK(AlSi3O8)
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ SillimaniteAl2(SiO4)O
Siβ“˜ TitaniteCaTi(SiO4)O
Siβ“˜ ZirconZr(SiO4)
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
Siβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siβ“˜ Garnet GroupX3Z2(SiO4)3
Siβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
PPhosphorus
Pβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ PyriteFeS2
Sβ“˜ PyrrhotiteFe1-xS
ClChlorine
Clβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Kβ“˜ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Kβ“˜ MicroclineK(AlSi3O8)
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caβ“˜ CalciteCaCO3
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caβ“˜ TitaniteCaTi(SiO4)O
Caβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caβ“˜ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiβ“˜ IlmeniteFe2+TiO3
Tiβ“˜ TitaniteCaTi(SiO4)O
CrChromium
Crβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
FeIron
Feβ“˜ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ FrohbergiteFeTe2
Feβ“˜ GoethiteΞ±-Fe3+O(OH)
Feβ“˜ IlmeniteFe2+TiO3
Feβ“˜ MagnetiteFe2+Fe23+O4
Feβ“˜ PyriteFeS2
Feβ“˜ PyrrhotiteFe1-xS
CuCopper
Cuβ“˜ ChalcopyriteCuFeS2
ZrZirconium
Zrβ“˜ ZirconZr(SiO4)
TeTellurium
Teβ“˜ CalaveriteAuTe2
Teβ“˜ FrohbergiteFeTe2
AuGold
Auβ“˜ CalaveriteAuTe2
Auβ“˜ GoldAu

Other Regions, Features and Areas containing this locality

South AmericaContinent
South America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Claudio G. Porto, Martin Hale, Mineralogy, morphology and chemistry of gold in the stone line lateritic profile of the Posse deposit, Central Brazil, Journal of Geochemical Exploration, Volume 57, Issues 1–3, December 1996, Pages 115-125, ISSN 0375-6742, 10.1016/S0375-6742(96)00027-1.
Econ Geol. (1995)90:308-321
Revista Brasileira de GeociΓͺncias. 30(2):256-260, (2000).
Thorman, Charles H., DeWitt, Ed, Maron, Marcos A., Ladeira, Eduardo A. (2001) Major Brazilian gold deposits – 1982 to 1999. Mineralium Deposita, 36 (3) 218-227 doi:10.1007/s001260100170
de Oliveira, C. G., de Queiroz, C. L., & Pimentel, M. M. (2008). The arenopΓ³lis-mara rosa Gold-Copper Belt, Neoproterozoic GoiΓ‘s Magmatic Arc. Brazilian Journal of Geology, 30(2), 219-221.
Kuyumjian, R. M. (2008). Magmatic arc and associated gold, copper, silver, and barite deposits in the state of GoiΓ‘s, central Brazil: characteristics and speculations. Brazilian Journal of Geology, 30(2).
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