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 journalArticle

2 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 languageEnglish
Pages (from-to)287-297
Number of pages11
JournalJournal of the Geothermal Research Society of Japan
Volume28
Issue number3
DOIs
Publication statusPublished - 2006

Fingerprint

alunite
mineral alteration
Japan
minerals
acids
acid
mineral
sulfate
topaz
andalusite
sulfates
aluminum
phosphate
volcanology
phosphates

Keywords

  • alunite
  • geothermal
  • Hatchobaru
  • hypogene origin
  • Japan
  • sulfur isotope

ASJC Scopus subject areas

  • Geophysics

Cite this

Hypogene Alunite from Acid Alteration Zone in Hatchobaru Geothermal Field, Kyushu, Japan. / Kiyosaki, Junko; Tanaka, Kana; Taguchi, Sachihiro; Chiba, Hitoshi; Takeuchi, Koichi; Motomura, Yoshinobu.

In: Journal of the Geothermal Research Society of Japan, Vol. 28, No. 3, 2006, p. 287-297.

Research output: Contribution to journalArticle

Kiyosaki, Junko ; Tanaka, Kana ; Taguchi, Sachihiro ; Chiba, Hitoshi ; Takeuchi, Koichi ; Motomura, Yoshinobu. / Hypogene Alunite from Acid Alteration Zone in Hatchobaru Geothermal Field, Kyushu, Japan. In: Journal of the Geothermal Research Society of Japan. 2006 ; Vol. 28, No. 3. pp. 287-297.
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