Ore Mineralogy and Mineral Chemistry of the Ashanti Gold …

The main sulfide minerals in the gold-sulfide disseminated ores are arsenopyrite, pyrite and pyrrhotite, and to a very minor extent, sphalerite and tetrahedrite. Carbonate …

Evidence for Two Stages of Mineralization in West …

Two economic styles of mineralization occur at Obuasi and contribute equally to the gold budget. These are (1) gold-bearing sulfides, dominantly arsenopyrite, mainly …

Multistage mineralization of the giant Obuasi gold …

Textural observations indicate the early formation of abundant arsenopyrite, followed by pyrite, with chalcopyrite, galena, sphalerite and pyrrhotite occurring as inclusions within pyrite and altered arsenopyrite.

arsénopyrite granit minéralisation d or ghana

The granite- hosted gold mineralisation is free milling and occurs in two to three generations of abundant, narrow quartz veining associated with up to 3% pyrite, lesser …

(PDF) Gold mineralization in the Ashanti Belt of Ghana; …

Gold in Early Proterozoic Birimian greenstone at Prestea in Ghana is associated with base metal sulphides and sulphosalts including arsenopyrite, pyrite, sphalerite, chalcopyrite, …

Paleoproterozoic Gold Deposits Hosted by Albite- and

In southwest Ghana, Oberthuer et al. (1996) have shown that one of the four major types of gold mineralization in Ashanti belt is associated with auriferous …

Full article: Geology and Isotope Systematics of Gold …

Gold mineralisation occurs as micron-sized gold inclusions of approximately 2 μm (Figure 4(a-b)) and larger gold grains within fractures of euhedral …

Geometry and genesis of the giant Obuasi gold deposit, …

high grade native gold hosted in quartz veins was sourced from the arsenopyrite mineralisation.

Gold mineralization in Palaeoproterozoic granitoids at

The world-class Obuasi gold deposit, Ghana, has gold-rich arsenopyrite spatially associated with quartz veins, which have extremely high, localised …

Multistage gold mineralization in the Wa-Lawra

LA-ICP-MS analysis, SEM imagery, detailed mineralogical studies coupled with EMP analysis, indicate that the occurrence of gold in the Bepkong deposit is in …