WC/95/038 Alluvial gold characterisation in exploration planning .Many alluvial gold grains contain microscopic inclusions of other minerals. . and along fractures. Mercury-rich gold is grey-white colour. Field of view 0.2mm.alluvial gold grain color,WC/95/022 The interpretation of alluvial gold characteristics as an .Cumulative percentage plots of silver content of alluvial gold grains from. Ecuador. ... examination of polished blocks or sections by differences in colour.
alluvial gold grain color