Ghana

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Ghana is underlain by the West African Craton, a Precambrian basement rock, which is one of the four cratons that make up the African continent (fig. 2). These cratons came together during the Proterozoic 2.1–2.0 giga-annum(Ga) Eburnean Orogeny. The southwestern region of the West African Craton, often referred to as the Leo-Man Shield, is composed of Archean rocks which are 3.0 to 2.5 Ga old. The eastern portion is dominated by Birimian rocks of Proterozoic age which were deposited just before and deformed during the Eburnean Orogeny, folded, intruded by granites, and metamorphosed to greenschist facies (Leube and others, 1990). The Proterozoic Birimian sequence of metasediments and metavolcanics is found throughout Ghana, Guinea, Mali, Burkina Faso, Côte d’Ivoire, and Liberia. The Birimian rocks contain many mineral deposits including primary and alluvial gold, as well as alluvial diamonds. (Chirico, P.G. et al)

Mineral List

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

Alabandite Albite Altaite Ankerite Antimony 'Apatite' Arsenopyrite Augite Aurostibite Baryte 'Bauxite' 'Biotite' Böhmite Bornite Boulangerite Bournonite Brucite Calaverite Calcite var: Manganoan Calcite Chalcocite Chalcopyrite 'Chlorite Group' Chloritoid

Chromite Coloradoite 'Columbite' Cummingtonite Diamond Digenite Dolomite Enstatite Epidote Freibergite Galaxite Galena 'Garnet' Gersdorffite Goethite Gold var: Electrum Gorceixite Graphite Hematite Henryite Hessite Ilmenite Jacobsite

Jamesonite Kostovite Kutnohorite 'Leucoxene' Linnaeite Lithiophorite Löllingite Magnesiochromite Magnetite Manganite Manganosite Marcasite Millerite Molybdenite Muscovite var: Fuchsite var: Sericite Nickeline Nsutite (TL) 'Olivine' Pentlandite Petzite Pyrite var: Arsenian Pyrite

Pyrochroite Pyrolusite Pyrope Pyrrhotite Quartz var: Smoky Quartz Ramsdellite Rhodochrosite Rickardite Rutile Spessartine Sphalerite Staurolite Stibnite Stützite Sylvanite Tetrahedrite Todorokite 'Tourmaline' Ullmannite 'Wad' Weissite Zincochromite Zircon

97 entries listed. 80 valid minerals. 1 type locality (valid mineral).

Localities in this Region

Ghana Ashanti Region Bonte Mine Brong-Ahafo Region Ahafo mine Central Region Awutu Efutu Senya District Winneba Dunkwa/Jimifield diamond field Eastern Region Asuogyaman District Akosombo Akosombo gold diggings Birim diamond field Akwatia Mine Lower Birim Middle Birim Upper Birim Birim North District Akyem mine Nyafomang diamond field Greater Accra Region Northern Region Daboya Du Nyanfoman-Noyem mine Upper East Region Upper West Region Volta Region Worawora Western Region Ashanti gold belt Bogoso-Prestea area Beta Boundary deposit Bogoso Mine

Ghana Western Region Ashanti gold belt Bogoso-Prestea area Buesichem deposit North Shaft-Plant deposit Plant deposit Prestea Mine Dunkwa Ayanfuri Mine Bokitsi Mine Dunkwa State Gold mine (Dunkwa Operation) Mampon deposit Konongo Konongo-Southern Cross Mine Obenemase Obuasi Ashanti Mine Tarkwa Abosso-Damang Au deposit Damang Mine Arkontansi prospect Tarkwa Mine Bekwai District Affoh-sefwi Awaso Deposits Bibiani Bibiani Mine Bogoso Birum River Bonsa diamond field Bonsa River Dompim Chirano district Kawere diamond field Nkran Hill Obotan mine Tarkwa Nsuta Mine (Insuta Mine; Nsuta-Gaywin Manganese concession; Nsuta-Wassaw) Teberebie Iduapriem Mine Teberebie mine Yakau Yakau Mine (Yakau-Humakrom-Asani Manganese concession) Yamfo-Sefwi deposit

References