Gold Deposits of Birimian Greenstone Belt in Ghana: Hydrothermal Alteration and Thermodynamics |
Common terms and phrases
ankerite chlorite metarhyolite ankerite metarhyolite ankerite phyllite ankerite ankerite-bearing metarhyolite Aqd CO2d Bd aqueous Archaean arsenopyrite Ashanti assemblages auriferous fluid belts biphase Birimian Birimian gold Bswg Bulk inclusion composition calcite carbonaceous carbonates chalcopyrite CO₂ country rocks deformation depletion diagram enrichment and depletion feldspar fluid inclusions foliation formation fragile graphite phyllite Frequency histogram Gains and Losses Geol geological geothermometer Ghana gold mineralization greywackes Hirdes and Leube homogenization hydrothermal activity isotopic kbar Li(ppm lode gold deposits metagreywacke metamorphism metasediments metasomatism metavolcanics Mg-rich chlorite monophase Mpesatia n.d n.d n.d NaCl equiv Obuasi Obuom occur paläont phase phyllite quartz plane porphyroblasts post-metamorphic Prestea Proterozoic pyrite pyrrhotite quartz reef Range of enrichment S₁ salinity Scale 1cm sericite shear zones siderite siderite and ankerite sulphides temperature Tfm Tmice Tmclath ThC02 Td THTOT TiO2 Tmclath ThC02 Tmclath ThCO2 Td TmCO2 Tfm Tmice Tmice Tmclath ThCO2 Whole-rock geochemical analyses