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Invisible Gold from the Hishikari Epithermal Gold Deposit, Japan: Implication for Gold Distribution and Deposition
Author(s) -
Shimada Nobutaka,
Nakamura Tomoki,
Morinaga Yasuo,
Shikama Yoshihito
Publication year - 2005
Publication title -
resource geology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 43
eISSN - 1751-3928
pISSN - 1344-1698
DOI - 10.1111/j.1751-3928.2005.tb00231.x
Subject(s) - pyrite , quartz , geology , geochemistry , electron microprobe , mineralization (soil science) , mineralogy , paleontology , soil science , soil water
. The presence of invisible gold was confirmed in arsenian pyrite from the Hishikari epithermal gold deposit, Kagoshima, Japan, by means of EPMA and SIMS analyses. The relative concentration of invisible gold may be positively correlated with As contents (0.01 to 10.37 wt%) of fine‐grained arsenian pyrite which commonly occurs in the auriferous quartz veins. Although arsenian pyrite occurs widely in any mineralization stage with electrum and other sulfide, sulfosalts, selenide or telluride minerals, arsenian pyrites having higher As contents accompanied by invisible gold occur dominantly in the middle stage of fine‐adularia‐quartz and in the late stage of coarse‐quartz rather than in the early stage of columnar‐adularia.