Latitude: 39°23'30"N
Longitude: 113°35'0"E
义兴寨金银矿, 繁峙县, 忻州市, 山西省, 中国
Volcanic-hosted Au-base-metal metasomatite, with reserves of 7.32 tonnes Au. The basement rocks in the mine and in the area are metamorphic sequences of the Archean Wutai, Shizhui, Zhuangwang groups and the Archean Hengshan Complex. Mesozoic moderate-felsic igneous rocks intruded the area as small, varied shaped, hypabyssal intrusions accompanied by varied dykes and explosive pipes. Several veined zones, consisting of altered fault breccias and filled gold-bearing base metallic quartz veins, have been recognized in the area. The ore bodies are usually vein-, cake- and plate- shaped, and are strictly controlled by shear-fault zones. The ores are of idiomorphic-hypidiomorphic, xenomorphic-irregularly grained and fractured and crashed breccia textures and of massive, veined, banded and veinlet and stockwork structures. Alterations found in the deposit are mainly silicification, carbonatization and chloritization.
References
- Poulsen, K.H., Taylor, B.E., Robert, F., Mortensen, J.K., Baoqin Lin, Ling Shang, Ershu Shen, and Lidong Zhang (1990): Report on the Sino-Canadian Gold Project 1987-1990. Geological Survey of Canada Open-File Report 2510.
- Xiaoyan Wang and Yurun Bi (1993): A comparison of mineralogical characteristics of two gold deposits in northeastern Shanxi. Geology and Prospecting 29(5), 29-32, 49.
- Rong Ye, Guangzhi Tu, Lunshan Zhao, Yongli Shen, and Li Luo (2002): Modes of Occurrence of Au-mineral Particles in Yixingzhai Gold Deposit and Their Metallogenic Dynamic Significance. Mineral Deposits [Kuangchuang Dizhi] 21(3), 278-282.
Mineral List
14 entries listed. 10 valid minerals.
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