Photo 1b. 380 m depth in HK20-002; 2cm clot of chalcopyrite in calcite-fluorite veining within host rock phonolite which is completely replaced by fine hydrothermal biotite, carbonate, magnetite and fluorite.
Photo 1b. 380 m depth in HK20-002; 2cm clot of chalcopyrite in calcite-fluorite veining within host rock phonolite which is completely replaced by fine hydrothermal biotite, carbonate, magnetite and fluorite.