Studying primary platinum minerals in chromite ores from an ultrabasic mass in Xizang in 1975, we discovered a bright-white isotropic metallic mineral with high hardness and high reflectance. The mineral was determine...Studying primary platinum minerals in chromite ores from an ultrabasic mass in Xizang in 1975, we discovered a bright-white isotropic metallic mineral with high hardness and high reflectance. The mineral was determined as pure chromium by the electron probe in 1976. In 1977, we also discovered some more pure chromium grains in展开更多
文摘Studying primary platinum minerals in chromite ores from an ultrabasic mass in Xizang in 1975, we discovered a bright-white isotropic metallic mineral with high hardness and high reflectance. The mineral was determined as pure chromium by the electron probe in 1976. In 1977, we also discovered some more pure chromium grains in
