三郡帯矢の峯かんらん岩体のクロミタイト中の含水鉱物について Hydrous mineral inclusions in chromian spinel from the Yanomine ultramafic complex of the Sangun zone, Southwest Japan
Hydrous mineral inclusions in chromian spinel were commonly found in chromitite from the Yanomine complex, one of the dunite-harzburgite complexes in the Sangun zone of the central Chugoku district, southwest Japan. Hydrous minerals are Na-phlogopite and pargasite, both of which are relatively high in Ti. Similar inclusions were also found in spinel in dunite from the Yufune complex and in troctolite from the Ashidachi complex. Chromitite pods which are relatively large-scale from the Tari-Misaka complex have no hydrous mineral inclusions in chromian spinel. Existence of hydrous mineral only as inclusions in chromian spinel may indicate a melt which is enriched with incompatible elements played an important role during precipitation of chromian soinel in the Yanomine comolex.
- 岩鉱 : 岩石鉱物鉱床学会誌 : journal of mineralogy, petrology and economic geology
岩鉱 : 岩石鉱物鉱床学会誌 : journal of mineralogy, petrology and economic geology 90(9), 333-338, 1995-09-05
Japan Association of Mineralogical Sciences = 日本鉱物科学会