Title: WEATHERED BIOTITE FROM MATSUSAKA, CENTRAL JAPAN
Abstract:Three kinds of elongated crystals of weathered biotite were found in a terrace deposit at Matsusaka, Mie Prefecture. They are mainly composed of Al-vermiculite, kaolinite, and gibbsite. The texture an...Three kinds of elongated crystals of weathered biotite were found in a terrace deposit at Matsusaka, Mie Prefecture. They are mainly composed of Al-vermiculite, kaolinite, and gibbsite. The texture and orientational relationship of these alteration products were studied with conclusions that much material, especially Al2O3, should have been supplied from the environment, and that the degree of preferred orientation of each alteration mineral with respect to the original biotite depends on the amounts of materials introduced to it.Read More