Timing of the mineralization and volcanism at Cibaliung gold deposit, western Java, Indonesia

Agung Harijoko, Kenzo Sanematsu, Robert A. Duncan, Sukmandaru Prihatmoko, Koichiro Watanabe

研究成果: Contribution to journalArticle査読

16 被引用数 (Scopus)

抄録

The Cibaliung deposit is a low-sulfidation type epithermal gold deposit situated about 70 km west of the Bayah dome complex. The gold-bearing quartz veins are hosted by basaltic andesite of the Honje Formation, which is comparable to the host rock of gold deposits at the Bayah dome complex. In order to clarify the timing of the mineralization and the volcanism at the Cibaliung area, two radiometric dating methods were applied. First, 40Ar/39Ar dating was conducted on six adularia samples to elucidate the age of mineralization. Second, K-Ar method was applied to two samples of the host rock, andesite and the Cibaliung tuff, in order to reveal the timing of volcanism. The 40Ar/39Ar dating determined mineralization ages in the range from 11.18 to 10.65 Ma while the K-Ar dating indicated the age of the andesite and the Cibaliung tuff to be 11.4±0.8 Ma and 4.9±0.6 Ma, respectively. These results imply that the epithermal gold mineralization in the Cibaliung area is related to the volcanic activity that produced the Honje Formation, while the Cibaliung tuff played an important role in the preservation of the Cibaliung deposit. The Cibaliung deposit is the oldest epithermal gold deposit yet discovered in western Java.

本文言語英語
ページ(範囲)187-195
ページ数9
ジャーナルResource Geology
54
2
DOI
出版ステータス出版済み - 6 1 2004

All Science Journal Classification (ASJC) codes

  • Geology
  • Geochemistry and Petrology

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