Gold mineralisation occurs as micron-sized gold inclusions of approximately 2 μm (Figure 4(a-b)) and larger gold grains within fractures of euhedral …
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 …
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 …
high grade native gold hosted in quartz veins was sourced from the arsenopyrite mineralisation.
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 …
Two economic styles of mineralization occur at Obuasi and contribute equally to the gold budget. These are (1) gold-bearing sulfides, dominantly arsenopyrite, mainly …
Gold in Early Proterozoic Birimian greenstone at Prestea in Ghana is associated with base metal sulphides and sulphosalts including arsenopyrite, pyrite, sphalerite, chalcopyrite, …
The world-class Obuasi gold deposit, Ghana, has gold-rich arsenopyrite spatially associated with quartz veins, which have extremely high, localised …
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.
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 …