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Published in:
2005 | OriginalPaper | Chapter
New observations on W-Sb-Au mineralization at Woxi, western Hunan, China
Authors : B. Peng, A. Piestrzynski, J. Pieczonka
Published in: Mineral Deposit Research: Meeting the Global Challenge
Publisher: Springer Berlin Heidelberg
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W-Sb-Au mineralization at Woxi was carefully studied, and native gold and Au-Sb mineral phases were observed under ore microscope and using EMPA with EDS techniques. The results show that the Au-Sb mineral phases include aurostibite (AuSb
2.13
) and antimony gold (Au
1.02
Sb) which interlaced with native gold as inclusions in microfractures of pyrite. The development of native gold and Sb-Au minerals as inclusions in microfractures of pyrite indicates that the mineralization processes might have evolved from a Au-Sb coexisting ore-forming fluid in temperature higher than 350°C. The temperature decreasing from higher to less than 350°C likely caused the precipitation of minerals including native gold, aurostibite, and antimony gold.