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Book Chapter

Some Textures of the Ores from the Ezuri Kuroko Deposits, Akita Prefecture, Japan

By
Shunzo Yui
Shunzo Yui
Department of Earth Science, Faculty of Science, Hirosaki university, Hirosaki 036, Japan
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Kimihide Ishitoya
Kimihide Ishitoya
Department of Earth Science, Faculty of Science, Hirosaki university, Hirosaki 036, Japan
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Published:
January 01, 1983

Abstract

The textures of ores collected from two localities in the Ezuri mine are described. Basing our study on observation of modes of occurrence, on cut and polished faces of hand specimens, and on microscopic examination of polished sections and polished thin sections, we interpret that yellow (chalcopyrite-pyrite) ore was lithified before the slumping of barite-rich black ore. In contrast, sphalerite-rich ore was partially consolidated prior to slumping. Recrystallization of sphalerite-rich ore is common, with sphalerite recrystallizing first, followed by chalcopyrite and other sulfides, and finally by chalcedonic quartz, quartz, and barite.

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Contents

Economic Geology Monograph Series

The Kuroko and Related Volcanogenic Massive Sulfide Deposits

Hiroshi Ohmoto
Hiroshi Ohmoto
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Brian J. Skinner
Brian J. Skinner
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Society of Economic Geologists
Volume
5
ISBN electronic:
9781629490007
Publication date:
January 01, 1983

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