Occurrence and generation environment of indium in the Shirogane, Chiemon, Ginsei and Ryusei veins of Akenobe mine, Hyogo Prefecture.

Abstract

Ore samples from the Akenobe mine are analyzed for the purpose to elucidate the detailed behaivior of Indium. Roquesite exists in the Chiemon, Ginsei and Ryusei vein. Cassiterite and/or stannite often exist in the part where roquesite co-exists with sphalerite. This means that mineralization of In and Sn has a close relationship. Indium contents are thought to be high with increasing of formation temperature. The Shirogane vein is the brittle deformation (Shoji, 1982), which means lower temperatures than others. This difference of temperature might be a main reason of difference in In occurrence.