7.3.5 Mineralization
Gold and silver occur as native gold, the gold–silver alloy electrum, in acanthite and
silver-rich sulphosalts (stephanite and pyrargyrite dominant) in association with pyrite
and minor amounts of arsenopyrite, chalcopyrite, galena and sphalerite predominantly
in bands within chalcedonic quartz, quartz and quartz–adularia colloform and
crustiform veins and breccias.