Formula: Cu1+4Cu2+2SnMoS8
From Alfredo Petrov:
HEMUSITE (hemusu-koh)
- Kagoshima: Hemusite from the Iriki mine had been previously reported as “stannian tetrahedrite”, due to incomplete analysis which did not consider molybdenum. Associated with goldfieldite as dark wavy ginguro-type bands in white quartz.
- Shizuoka: In the Osawa #4 vein of the Kawazu mine, metallic grey to violet-grey micrograins and microcrystals of hemusite form compact grey ginguro bands to several mm wide and several cm long in massive white chalcedonic quartz. Isolated pyrite crystals, Cu-sulphide grains and secondary Cu species are also present. (Min. J. Japan, 14, #3, July 1988)
Above: Hemusite, Kawazu mine (Rendaiji mine, Rendaizi mine), Rendaiji, Shimoda City, Shizuoka Prefecture, Japan. Width of view 6mm.
