Premium
A Preliminary Study on the Occurrence State and Precipitation Mechanism of Gold in Pyrite of Zhengguang Au Deposit
Author(s) -
CHE Hewei,
ZHOU Zhenhua
Publication year - 2014
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 - 10.1111/1755-6724.12375_7
Subject(s) - beijing , metallogeny , china , pyrite , chinese academy of sciences , library science , geology , geochemistry , history , computer science , archaeology , sphalerite
The Zhengguang Au deposit is located at the Duobaoshan ore-concentrated area, northeastern of Great Xing;an Range. The genesis of this deposit remains controversial. Pyrites are the mainly Au-hosting mineral, which are well developed throughout the following metallogenic phases: (1) Quartz-Pyrite phase (Qtz-Py) produced euhedral medium to coarse-grained pyrite, a few chalcopyrite occurs in the fractures of pyrite and along grain boundaries; (2) Quartz-Calcite-Sulfide phase (QtzCal-Sul) led to the precipitation of euhedral medium to fine-grained pyrite, together with chalcopyrite, galena and sphalerite; (3) Calcite-Pyrite phase (Cal-Py) major as euhedral to subhedral medium to coarse-grained pyrite with few other sulfides. In this paper, trace elements in pyrite from different phases were analyzed by electron microprobe to find out the occurrence state and precipitated mechanism of Au.