2023 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 14 - Sep 16, 2023大阪公立大学 杉本キャンパス 全学共通教育棟
2023 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 14 - Sep 16, 2023大阪公立大学 杉本キャンパス 全学共通教育棟
[R1-11]Origins and formation mechanisms of various organic minerals associated with hydrothermal silica veins
*Ryoji Tanaka1,2, Yuki Inoue3, Takashi Ishibashi4, Akihito Hagiwara(1. Sagami Chemical Research Institute, 2. Tokai Univ., 3. Kyushu Univ., 4. Museum of Osaka Univ.)
Keywords:
epithermal,polycyclic aromatic hydrocarbon,hokkaidoite,benzo[ghi]perylene,organic minerals
We found polycyclic aromatic hydrocarbon (PAH)-based organic minerals associated with epithermal silica veins at several sites in Japan, including two in Hokkaido. These consist of carpathianite (coronene crystals), benzo[ghi]perylene crystals, picene crystals, and the like. Although some solid-solution behavior is observed, most of them are molecular crystals of organic substances with high purity. This means that fractional crystallization occurs strongly in PAH-based organic minerals. Benzo[ghi]perylene was approved as a new mineral under the name of hokkaidoite.