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Tarkwa Mine, Tarkwa, Ashanti gold belt, Western Region, Ghana

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View of the Tarkwa gold mining area, ca. 1910.

Tarkwa Mine, Tarkwa, Ashanti gold belt, Western Region, Ghana
View of the Tarkwa gold mining area, ca. 1910.

Tarkwa Mine, Tarkwa, Ashanti gold belt, Western Region, Ghana
Latitude & Longitude (WGS84): 5° 17' 9'' North , 2° 2' 27'' West
Latitude & Longitude (decimal): 5.28583,-2.04083
GeoHash:G#: ebyw1d3bj
Locality type:Mine
Köppen climate type:Aw : Tropical savanna, wet


Produced 493 kg Au (1983); 449 kg Au (1984).
In conglomerates of the Tarkwaian Sequence over the southern Ashanti Belt.

Regions containing this locality

West Africa

UN Subregion - 555 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


20 valid minerals.

Detailed Mineral List:

Bornite
Formula: Cu5FeS4
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Chalcopyrite
Formula: CuFeS2
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
'Chlorite Group'
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Chloritoid
Formula: (Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Chromite
Formula: Fe2+Cr3+2O4
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Diamond
Formula: C
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Gold
Formula: Au
Reference: Mining Annual Review (1985): 448.; The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Hematite
Formula: Fe2O3
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Ilmenite
Formula: Fe2+TiO3
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Leucoxene
Reference: http://www.portergeo.com.au/tours/africa2000/module2.asp
Magnetite
Formula: Fe2+Fe3+2O4
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Marcasite
Formula: FeS2
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Muscovite var: Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Pyrite
Formula: FeS2
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Pyrrhotite
Formula: Fe7S8
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Quartz
Formula: SiO2
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Rutile
Formula: TiO2
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Staurolite
Formula: Fe2+2Al9Si4O23(OH)
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Zincochromite
Formula: ZnCr2O4
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)
Zircon
Formula: Zr(SiO4)
Reference: The Canadian Mineralogist Vol. 35,p p.587-595(1997)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
'Diamond'1.CB.10aC
Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
'Bornite'2.BA.15Cu5FeS4
'Chalcopyrite'2.CB.10aCuFeS2
Marcasite2.EB.10aFeS2
Pyrite2.EB.05aFeS2
Pyrrhotite2.CC.10Fe7S8
Group 4 - Oxides and Hydroxides
'Chromite'4.BB.05Fe2+Cr3+2O4
Hematite4.CB.05Fe2O3
Ilmenite4.CB.05Fe2+TiO3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Zincochromite4.BB.05ZnCr2O4
Group 9 - Silicates
'Chloritoid'9.AF.85(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
'Epidote'9.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
Staurolite9.AF.30Fe2+2Al9Si4O23(OH)
Zircon9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
Garnet Group-X3Z2(SiO4)3
Leucoxene-
Tourmaline-A(D3)G6(T6O18)(BO3)3X3Z

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
Semi-metals and non-metals
Diamond1.3.6.1C
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Pyrrhotite2.8.10.1Fe7S8
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
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
Chromite7.2.3.3Fe2+Cr3+2O4
Magnetite7.2.2.3Fe2+Fe3+2O4
Zincochromite7.2.3.6ZnCr2O4
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 [4] and >[4] coordination
Staurolite52.2.3.1Fe2+2Al9Si4O23(OH)
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Chloritoid52.3.3.1(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
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 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Garnet Group'-X3Z2(SiO4)3
Leucoxene-
Muscovite
var: Fuchsite
-K(Al,Cr)3Si3O10(OH)2
var: Sericite-KAl2(AlSi3O10)(OH)2
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H StauroliteFe22+Al9Si4O23(OH)
BBoron
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
CCarbon
C DiamondC
OOxygen
O Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
O ChromiteFe2+Cr23+O4
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
O Garnet GroupX3Z2(SiO4)3
O HematiteFe2O3
O IlmeniteFe2+TiO3
O MagnetiteFe2+Fe23+O4
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O RutileTiO2
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O StauroliteFe22+Al9Si4O23(OH)
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
O ZincochromiteZnCr2O4
O ZirconZr(SiO4)
AlAluminium
Al Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al StauroliteFe22+Al9Si4O23(OH)
SiSilicon
Si Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
Si Garnet GroupX3Z2(SiO4)3
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si StauroliteFe22+Al9Si4O23(OH)
Si ZirconZr(SiO4)
SSulfur
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S MarcasiteFeS2
S PyriteFeS2
S PyrrhotiteFe7S8
KPotassium
K Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
CaCalcium
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
TiTitanium
Ti IlmeniteFe2+TiO3
Ti RutileTiO2
CrChromium
Cr ChromiteFe2+Cr23+O4
Cr Muscovite (var: Fuchsite)K(Al,Cr)3Si3O10(OH)2
Cr ZincochromiteZnCr2O4
FeIron
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe Chloritoid(Fe2+,Mg,Mn2+)Al2(SiO4)O(OH)2
Fe ChromiteFe2+Cr23+O4
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe HematiteFe2O3
Fe IlmeniteFe2+TiO3
Fe MagnetiteFe2+Fe23+O4
Fe MarcasiteFeS2
Fe PyriteFeS2
Fe PyrrhotiteFe7S8
Fe StauroliteFe22+Al9Si4O23(OH)
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
ZnZinc
Zn ZincochromiteZnCr2O4
ZrZirconium
Zr ZirconZr(SiO4)
AuGold
Au GoldAu

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

Statherian - Paleoproterozoic
1600 - 2500 Ma



ID: 3185349
Paleoproterozoic sedimentary rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Conglomerate,sandstone,argillite

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]

Rhyacian
2050 - 2300 Ma



ID: 3306446

Age: Rhyacian (2050 - 2300 Ma)

Lithology: Sedimentary and volcaniclastic

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Mining Annual Review (1985): 448. A gold mine owned by State Gold Mines Corp.
Hirdes, W. & Nunoo, B. (1994): The Proterozoic paleoplacers at Tarkwa gold mine, SW Ghana: sedimentology, mineralogy, and precise age dating of the Main Reef and West Reef, and bearing of the investigations on source area aspects. Geologisches Jahrbuch, Reihe D: Mineralogie, Petrographie, Geochemie, Lagerstaettenkunde 100, 247-311.


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