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Ore deposit description:

Identifier: GHA-00013
Name(s): Ashanti - Obuasi
Country(ies): GHANA (Republic of Ghana) -
NameProduction 3 year averageReserveResourceUnitClassOre type(s)
Silver0 ?18 0850 tA Ore of indeterminate nature.
Gold835 16130625 tA Native-element ore. Secondary native-element ore: "oxidized ore". Ore in which the element is in chemical substitution within the lattice of a host mineral, and refra.
Main morphology: Discordant primary orebody (vein, reef, mass, lens, pipe, column, etc.)
Morphology(ies): Discordant primary orebody (vein, reef, mass, lens, pipe, column, etc.) - Discordant lode or vein (thickness > 50 cm), in clusters or isolated - Stockwork (or network) of stringers or veinlets (thickness < 50 cm), discordant on the strata - Discordant envelope of disseminated ore -
Deposit type(s): Shear / fault zone, vein; Ashanti-type - Residual concentration -
Host rock(s): Meta-sediment - Greywacke - Meta-basite - Chert, jasper, jaspilite - Syn- to late-eruptive volcaniclastic rock, and Undifferenciated Epiclastites -
Exploitation type(s): Open cast (open pit) mining - Tailings retreatment - Underground mining -
MineralisationHost rock
Status: Producing industrial mine

Class definition: for the considered commodity, following its calculated total potential (passed production + reserves + resources), the ore deposit is classified into class A (very large deposit), B (large deposit), C (medium deposit), D (small deposit), E (occurrence), or N/A (no information available).
Used units are: t = metric ton (1000 kg), ct = carat

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All the boundaries, names and designations used therein do not imply official endorsement or acceptance by the Secretariat of the ACP group of states.

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