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Morro Velho mine, Nova Lima, Minas Gerais, Brazili
Regional Level Types
Morro Velho mineMine
Nova Lima- not defined -
Minas Gerais- not defined -
BrazilCountry

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View of the Morro Velho gold mine, ca. 1909.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
View of the Morro Velho gold mine, ca. 1910.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
View of the Morro Velho gold mine, ca. 1980.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
View of the Morro Velho gold mine, ca. 1909.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
View of the Morro Velho gold mine, ca. 1910.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
View of the Morro Velho gold mine, ca. 1980.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
View of the Morro Velho gold mine, ca. 1909.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
View of the Morro Velho gold mine, ca. 1910.

Morro Velho mine, Nova Lima, Minas Gerais, Brazil
Latitude & Longitude (WGS84): 19° 58' 46'' South , 43° 50' 58'' West
Latitude & Longitude (decimal): -19.97972,-43.84972
GeoHash:G#: 7h2y64v9e
Locality type:Mine
Köppen climate type:Cwa : Monsoon-influenced humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Nova Lima88,399 (2012)0.7km
Raposos13,262 (2012)5.0km
Belo Horizonte2,373,224 (2014)11.3km
Caeté33,231 (2012)21.8km
Contagem627,123 (2012)22.0km


The world's oldest continually producing gold mine, started in 1725. Until 1960, it produced about 450 tons of gold. The mine includes the Mina Velha and Mina Grande deposits. In 1997, the Mina Grande workings were abandoned after reaching a depth of 2,453 m below the surface at level 27. At the same time, the Mina Velha workings were 518 m deep and still producing.
Coordinates are given for the Mina Grande workings.

Regions containing this locality

South America PlateTectonic Plate
South AmericaContinent
Iron Quadrangle, Minas Gerais, BrazilQuadrangle

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

33 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Albite
Formula: Na(AlSi3O8)
Reference: Rocks & Min.: 63:43.; Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Albite var: Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
'Apatite'
Reference: Rocks & Min.: 63:43.
Aragonite
Formula: CaCO3
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 168-370
Arsenopyrite
Formula: FeAsS
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 168-370; Rocks & Min.: 63:43.
Baryte
Formula: BaSO4
Reference: Rocks & Min.: 63:43.
'Biotite'
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Calcite
Formula: CaCO3
Reference: Rocks & Min.: 63:43.; Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Chalcopyrite
Formula: CuFeS2
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 168-370
'Chlorite Group'
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 168-370; Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Cubanite
Formula: CuFe2S3
Habit: Orthorhombic prisms to a few mm
Colour: yellow brown
Fluorescence: none
Description: The cubanite only occurs on white dolomite and can be easily confused with mm sized pyrrhotites. These were the best cubanites until the cm sized ones were found
Reference: No reference listed
Dolomite
Formula: CaMg(CO3)2
Habit: Simple rhombs to several cm
Colour: white
Description: Dolomite crystals from this locality are the only matrix for cubanite crystals.
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: 214; Rocks & Minerals: 63: 43.; Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Dolomite var: Ferroan Dolomite
Formula: Ca(Mg,Fe)(CO3)2
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Dravite
Formula: Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Epsomite
Formula: MgSO4 · 7H2O
Reference: Rocks & Min.: 63:43.
Galena
Formula: PbS
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Gold
Formula: Au
Habit: Plates
Colour: yellow
Fluorescence: none
Description: This is a gold mine, but few specimens survive. There are potentially spectacular crystallised specimens.
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 168-370; Rocks & Min.: 63:43.
Gypsum
Formula: CaSO4 · 2H2O
Reference: Rocks & Min.: 63:43.
Gypsum var: Selenite
Formula: CaSO4 · 2H2O
Reference: Rocks & Min.: 63:43.
Hematite
Formula: Fe2O3
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Ilmenite
Formula: Fe2+TiO3
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Leucoxene
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Marcasite
Formula: FeS2
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 168-370
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Rocks & Min.: 63:43.; Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Muscovite var: Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Pyrite
Formula: FeS2
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 168-370; Rocks & Min.: 63:43.
Pyrrhotite
Formula: Fe7S8
Habit: Hexagonal tablets to many cm
Colour: yellow brown
Fluorescence: none
Description: These lustrous xls are some of the best
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 168-370; Rocks & Min.: 63:43.
Quartz
Formula: SiO2
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 168-370; Rocks & Min.: 63:43.; Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Rutile
Formula: TiO2
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Scheelite
Formula: Ca(WO4)
Habit: Bipyramids to 3 cm
Colour: orange-red
Fluorescence: blue white under short wave
Reference: Rocks & Min.: 63:43.; Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Siderite
Formula: FeCO3
Habit: rhombs to many cm
Colour: yellow brown
Description: Fine brown siderites on white Dolomite with clear Quartz
Reference: Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 168-370; 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: 169; Rocks & Minerals: 63: 43.; Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Stilpnomelane
Formula: (K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Talc
Formula: Mg3Si4O10(OH)2
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Titanite
Formula: CaTi(SiO4)O
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277
Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Reference: Rocks & Min.: 63:43.
Zircon
Formula: Zr(SiO4)
Reference: Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001): Mineralium Deposita 36, 249-277

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Chalcopyrite2.CB.10aCuFeS2
Cubanite2.CB.55aCuFe2S3
Galena2.CD.10PbS
Marcasite2.EB.10aFeS2
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 5 - Nitrates and Carbonates
Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Aragonite5.AB.15CaCO3
Calcite5.AB.05CaCO3
Dolomite5.AB.10CaMg(CO3)2
var: Ferroan Dolomite5.AB.10Ca(Mg,Fe)(CO3)2
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Epsomite7.CB.40MgSO4 · 7H2O
Gypsum7.CD.40CaSO4 · 2H2O
var: Selenite7.CD.40CaSO4 · 2H2O
Scheelite7.GA.05Ca(WO4)
Group 9 - Silicates
Actinolite9.DE.10☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite9.FA.35Na(AlSi3O8)
var: Andesine9.FA.35(Na,Ca)[Al(Si,Al)Si2O8]
Dravite9.CK.05Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Fuchsite9.EC.15K(Al,Cr)3Si3O10(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Stilpnomelane9.EG.40(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Talc9.EC.05Mg3Si4O10(OH)2
Titanite9.AG.15CaTi(SiO4)O
Vermiculite9.EC.50Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Biotite'-
'Chlorite Group'-
Leucoxene-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Gold1.1.1.1Au
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Cubanite2.9.13.1CuFe2S3
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Ilmenite4.3.5.1Fe2+TiO3
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
AB(XO3)2
Ankerite14.2.1.2Ca(Fe2+,Mg)(CO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Epsomite29.6.11.1MgSO4 · 7H2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO4
Scheelite48.1.2.1Ca(WO4)
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Dravite61.3.1.9Na(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Talc71.2.1.3Mg3Si4O10(OH)2
Vermiculite71.2.2d.3Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined islands
Stilpnomelane74.1.1.1(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
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)
Unclassified Minerals, Mixtures, etc.
Actinolite-☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Albite
var: Andesine
-(Na,Ca)[Al(Si,Al)Si2O8]
'Apatite'-
Aragonite-CaCO3
'Biotite'-
'Chlorite Group'-
Dolomite
var: Ferroan Dolomite
-Ca(Mg,Fe)(CO3)2
Gypsum
var: Selenite
-CaSO4 · 2H2O
Leucoxene-
Muscovite
var: Fuchsite
-K(Al,Cr)3Si3O10(OH)2
var: Sericite-KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H MuscoviteKAl2(AlSi3O10)(OH)2
H EpsomiteMgSO4 · 7H2O
H Gypsum (var: Selenite)CaSO4 · 2H2O
H VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
H TalcMg3Si4O10(OH)2
H Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
H DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
H GypsumCaSO4 · 2H2O
BBoron
B DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C SideriteFeCO3
C DolomiteCaMg(CO3)2
C CalciteCaCO3
C Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
C AnkeriteCa(Fe2+,Mg)(CO3)2
C AragoniteCaCO3
OOxygen
O SideriteFeCO3
O DolomiteCaMg(CO3)2
O ScheeliteCa(WO4)
O AlbiteNa(AlSi3O8)
O CalciteCaCO3
O QuartzSiO2
O MuscoviteKAl2(AlSi3O10)(OH)2
O BaryteBaSO4
O EpsomiteMgSO4 · 7H2O
O Gypsum (var: Selenite)CaSO4 · 2H2O
O VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
O Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
O AnkeriteCa(Fe2+,Mg)(CO3)2
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
O TalcMg3Si4O10(OH)2
O Albite (var: Andesine)(Na,Ca)[Al(Si,Al)Si2O8]
O Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
O DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
O MagnetiteFe2+Fe23+O4
O HematiteFe2O3
O IlmeniteFe2+TiO3
O RutileTiO2
O TitaniteCaTi(SiO4)O
O ZirconZr(SiO4)
O AragoniteCaCO3
O GypsumCaSO4 · 2H2O
NaSodium
Na AlbiteNa(AlSi3O8)
Na Albite (var: Andesine)(Na,Ca)[Al(Si,Al)Si2O8]
Na Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Na DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mg DolomiteCaMg(CO3)2
Mg EpsomiteMgSO4 · 7H2O
Mg VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Mg Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
Mg AnkeriteCa(Fe2+,Mg)(CO3)2
Mg Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Mg TalcMg3Si4O10(OH)2
Mg Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Mg DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Al AlbiteNa(AlSi3O8)
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Albite (var: Andesine)(Na,Ca)[Al(Si,Al)Si2O8]
Al Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Al DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Si AlbiteNa(AlSi3O8)
Si QuartzSiO2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Si TalcMg3Si4O10(OH)2
Si Albite (var: Andesine)(Na,Ca)[Al(Si,Al)Si2O8]
Si Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Si DraviteNa(Mg3)Al6(Si6O18)(BO3)3(OH)3(OH)
Si TitaniteCaTi(SiO4)O
Si ZirconZr(SiO4)
SSulfur
S PyrrhotiteFe7S8
S PyriteFeS2
S ChalcopyriteCuFeS2
S MarcasiteFeS2
S ArsenopyriteFeAsS
S BaryteBaSO4
S EpsomiteMgSO4 · 7H2O
S Gypsum (var: Selenite)CaSO4 · 2H2O
S GalenaPbS
S GypsumCaSO4 · 2H2O
S CubaniteCuFe2S3
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
K Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
CaCalcium
Ca DolomiteCaMg(CO3)2
Ca ScheeliteCa(WO4)
Ca CalciteCaCO3
Ca Gypsum (var: Selenite)CaSO4 · 2H2O
Ca Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
Ca AnkeriteCa(Fe2+,Mg)(CO3)2
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Ca Albite (var: Andesine)(Na,Ca)[Al(Si,Al)Si2O8]
Ca Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Ca TitaniteCaTi(SiO4)O
Ca AragoniteCaCO3
Ca GypsumCaSO4 · 2H2O
TiTitanium
Ti IlmeniteFe2+TiO3
Ti RutileTiO2
Ti TitaniteCaTi(SiO4)O
CrChromium
Cr Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
FeIron
Fe PyrrhotiteFe7S8
Fe SideriteFeCO3
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
Fe MarcasiteFeS2
Fe ArsenopyriteFeAsS
Fe VermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Fe Dolomite (var: Ferroan Dolomite)Ca(Mg,Fe)(CO3)2
Fe AnkeriteCa(Fe2+,Mg)(CO3)2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Actinolite☐{Ca2}{Mg4.5-2.5Fe0.5-2.5}(Si8O22)(OH)2
Fe Stilpnomelane(K,Ca,Na)(Fe2+,Mg,Al)8(Si,Al)12(O,OH)36 · nH2O
Fe MagnetiteFe2+Fe23+O4
Fe HematiteFe2O3
Fe IlmeniteFe2+TiO3
Fe CubaniteCuFe2S3
CuCopper
Cu ChalcopyriteCuFeS2
Cu CubaniteCuFe2S3
AsArsenic
As ArsenopyriteFeAsS
ZrZirconium
Zr ZirconZr(SiO4)
BaBarium
Ba BaryteBaSO4
WTungsten
W ScheeliteCa(WO4)
AuGold
Au GoldAu
PbLead
Pb GalenaPbS

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Archean
2500 - 4000 Ma



ID: 3186992
Archean crystalline metamorphic rocks

Age: Archean (2500 - 4000 Ma)

Lithology: Medium-high grade orthogneiss

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Henwood, W.J. (1871) Observations on Metalliferous Deposits: On the Gold Mines of Minas Geraes, in Brazil. Transactions of the Royal Geological Society of Cornwall 8(1), 168-370.
Rocks & Minerals: 63: 43.
Bannister, F.A. (1932) The distinction of pyrite from marcasite in nodular growths. Mineralogical Magazine, 23, 179-187.
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: 214.
Lucio, A. and Gaines, R.V. (1973) The minerals of the Morro Velho gold mine, Brazil. Mineralogical Record, 4(5), 224-229.
Eakin, M.C. (1989) British Enterprise in Brazil - The St. John d'el Rey Mining Company and the Morro Velho Gold Mine, 1830-1960. Duke University Press, 334 pp.
Thorman, C.H., DeWitt, E., Maron, M.A.C., and Ladeira, E.A. (2001) Major Brazilian gold deposits - 1982 to 1999. Mineralium Deposita 36, 218-227.
Lobato, L.M., Ribeiro-Rodrigues, L.C., and Reis Vieira, F.W. (2001) Brazil's premier gold province. Part II: Geology and genesis of gold deposits in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrifero. Mineralium Deposita 36, 249-277.

Localities in this Region
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