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Book Chapter

Zonal Alteration around the Fukazawa Kuroko Deposits, Akita Prefecture, Northern Japan

By
Jiro Date
Jiro Date
Dowa Mining Company, Ltd., Central Research Laboratory, Tobuki-cho 277-1, Hachioji-shi, Tokyo, 192 Japan
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Yoshihiro Watanabe
Yoshihiro Watanabe
Dowa Mining Company, Ltd., Marunouchi 1-8-2, Chiyoda-ku, Tokyo, 100 Japan
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Yuji Saeki
Yuji Saeki
Dowa Mining Company, Ltd., Marunouchi 1-8-2, Chiyoda-ku, Tokyo, 100 Japan
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Published:
January 01, 1983

Abstract

In the first part of this paper, the following three aspects of wall-rock alteration around the Fukazawa deposits in the Hokuroku district of Japan are discussed: (1) the existence of an Na 2 O-depleted dacite mass with a lateral dimension of 1.5 X 3.0 km immediately below the ore horizon; (2) the spatial zoning of alteration minerals in the hanging-wall and footwall rocks; and (3) the relative mobilities of the major elements during alteration of the footwall dacite.

In the second part of this paper, an example of the application of computers in the statistical treatment of physical and chemical data of wall rocks around the Ezuri deposits is presented, and the potential of the method in exploration of the Kuroko deposits is discussed.

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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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