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New Discovery of Telluride and Bi‐Sulfosalt in the Dahu Quartz Vein‐Style Au‐Mo Deposit, Xiaoqinling Region, China
Author(s) -
YIN Chao,
LIU Jiajun,
ZHAI Degao,
GUO Yuncheng
Publication year - 2019
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.13788
Subject(s) - beijing , china , chinese academy of sciences , geology , geochemistry , mining engineering , earth science , geography , archaeology
The Dahu quartz vein‐style Au-Mo deposit is an important deposit in the Xiaoqingling region, which contains a total reserves of 38 tons of Au at an average grade of 6.8 g/t and 100, 000 tons of Mo at an average grade of 0.24%. It is hosted in the highly metamorphic gneiss of the Archaeozoic Taihua group, and the ore‐bearing quartz veins are controlled by several small to medium size E–W-striking faults, i.e., F1, F8, F7, F35, F5, and F6 from north to south (Jian et al., 2015). The Dahu Au-Mo deposit is characterized by the common enrichment of native gold, molybdenite, telluride and Bi‐sulfosalt. This work reported the new discovery of telluride and Bi‐sulfosalts in this deposit, and discussed its ore genesis through systematic microscopic observation, electron probe microanalysis (Hereinafter referred to as EPMA) and thermodynamic study of mineral associations.