地球外試料中角閃石の結晶化学と形成過程について

抄録

Although amphibole is one of the most common rock-forming minerals on the earth, it rarely occurs in meteorites. This is due to anhydrous and low-pressure environment of most meteorite parent bodies. In this paper we report two different occurrences of amphibole from extraterrestrial materials. One is hornblende from an R chondrite, and the other is kaersutite from Martian meteorites. Both amphiboles bear unique crystal chemistry different from terrestrial ones and provide important information about their thermal history especially related to the water in extraterrestrial environment.