Hypogene Alunite from Acid Alteration Zone in Hatchobaru Geothermal Field, Kyushu, Japan

Junko Kiyosaki; Kana Tanaka; Sachihiro Taguchi; Hitoshi Chiba; Koichi Takeuchi; Yoshinobu Motomura

doi:10.11367/grsj1979.28.287

Hypogene Alunite from Acid Alteration Zone in Hatchobaru Geothermal Field, Kyushu, Japan

Junko Kiyosaki, Kana Tanaka, Sachihiro Taguchi, Hitoshi Chiba, Koichi Takeuchi, Yoshinobu Motomura

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

Alteration minerals focused on alunite and other acid alteration minerals were examined in the northern part of the Hatchobaru geothermal field. Alunite minerals are widely distributed with more than 300 meters thickness. Alunite minerals have a wide range of δ³¹S from 0.5 to 23.7 per mil, indicating several different origins: supergene and hypogene origins. APS (Aluminium phosphate-sulfate) minerals in the core of the alunite minerals and the newly found acid alteration minerals such as zunyite, topaz, and andalusite suggest that volcanic acid sulfate solutions were once present to have formed the thick acid alteration zone at the Hatchobaru geothermal field.

Original language	English
Pages (from-to)	287-297
Number of pages	11
Journal	Journal of the Geothermal Research Society of Japan
Volume	28
Issue number	3
DOIs	https://doi.org/10.11367/grsj1979.28.287
Publication status	Published - 2006

Keywords

alunite
geothermal
Hatchobaru
hypogene origin
Japan
sulfur isotope

ASJC Scopus subject areas

Geophysics

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abstract = "Alteration minerals focused on alunite and other acid alteration minerals were examined in the northern part of the Hatchobaru geothermal field. Alunite minerals are widely distributed with more than 300 meters thickness. Alunite minerals have a wide range of δ31S from 0.5 to 23.7 per mil, indicating several different origins: supergene and hypogene origins. APS (Aluminium phosphate-sulfate) minerals in the core of the alunite minerals and the newly found acid alteration minerals such as zunyite, topaz, and andalusite suggest that volcanic acid sulfate solutions were once present to have formed the thick acid alteration zone at the Hatchobaru geothermal field.",

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T1 - Hypogene Alunite from Acid Alteration Zone in Hatchobaru Geothermal Field, Kyushu, Japan

AU - Kiyosaki, Junko

AU - Tanaka, Kana

AU - Taguchi, Sachihiro

AU - Chiba, Hitoshi

AU - Takeuchi, Koichi

AU - Motomura, Yoshinobu

PY - 2006

Y1 - 2006

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AB - Alteration minerals focused on alunite and other acid alteration minerals were examined in the northern part of the Hatchobaru geothermal field. Alunite minerals are widely distributed with more than 300 meters thickness. Alunite minerals have a wide range of δ31S from 0.5 to 23.7 per mil, indicating several different origins: supergene and hypogene origins. APS (Aluminium phosphate-sulfate) minerals in the core of the alunite minerals and the newly found acid alteration minerals such as zunyite, topaz, and andalusite suggest that volcanic acid sulfate solutions were once present to have formed the thick acid alteration zone at the Hatchobaru geothermal field.

KW - alunite

KW - geothermal

KW - Hatchobaru

KW - hypogene origin

KW - Japan

KW - sulfur isotope

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Hypogene Alunite from Acid Alteration Zone in Hatchobaru Geothermal Field, Kyushu, Japan

Abstract

Keywords

ASJC Scopus subject areas

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