Invisible gold and arsenic in pyrite from the high-grade Hishikari gold deposit, Japan

被引：14

作者：

Morishita, Y. ^{[1
]}

Shimada, N. ^{[2
]}

Shimada, K. ^{[2
]}

机构：

[1] AIST, Geol Survey Japan, Tsukuba, Ibaraki 3058567, Japan

[2] Kyushu Univ, Dept Earth & Planetary Sci, Fukuoka 8128581, Japan

来源：

APPLIED SURFACE SCIENCE | 2008年 / 255卷 / 04期

关键词：

Hishikari deposit; Gold; Arsenic; Pyrite; SIMS; EPMA;

D O I：

10.1016/j.apsusc.2008.05.131

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Gold occurs as both electrum (a natural alloy of gold and silver) and invisible gold in arsenian pyrite in the Hishikari epithermal gold deposit in Japan. Microanalyses of arsenian pyrite from the deposit using secondary ion mass spectrometry (SIMS) and electron probe microanalysis (EPMA) revealed that Au concentrations (0.1-2600 ppm) are positively correlated with As concentrations (0.0-6.1%). A small (3 mu m) area of pyrite was analyzed because the sample textures were. ne and complicated. The Au/As ratio is high in the Sanjin ore zone, which has very high-grade veins, while the ratio is low in the Yamada ore zone, which has average-grade veins. (C) 2008 Elsevier B. V. All rights reserved.

引用

页码：1451 / 1454

页数：4

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