FORMATION OF VERMICULITE AND KAOLIN MINERAL FROM HORNBLENDE

KATSUTOSHI TOMITA; HIROSHI TATEYAMA; NOBORU OBA

doi:10.2465/ganko1941.64.64

The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists

Online ISSN : 1883-0765
Print ISSN : 0021-4825
ISSN-L : 0021-4825

FORMATION OF VERMICULITE AND KAOLIN MINERAL FROM HORNBLENDE

KATSUTOSHI TOMITA, HIROSHI TATEYAMA, NOBORU OBA

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1970 Volume 64 Issue 2 Pages 64-71

DOI https://doi.org/10.2465/ganko1941.64.64

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Abstract

Vermiculite and kaolin mineral showing a single crystal pseudomorph of hornblende are found in the hornblende andesite distributed in Iriki-cho, northern part of Kagoshima Prefecture. The vermiculite was formed from hornblende and then the kaolin mineral was formed from the vermiculite by weathering. Zoning due to successive argillization is observed in the crystal.

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