SULPHIDE MINERALISATION IN THE MIDDLE VALE REEF AT ...
produced the widespread massive iron oxide quartz ore described in section ( Plates and ). The lithology is dominated by granular pyrite, together with minor quartz, set in a matrix of The term granular is used to distinguish accumulations of discrete anhedral pyrite grains from both discrete euhedral pyrite crystals, and larger areas of massive pyrite. 16 I. 162 kaolinitic ...