The Poshi intrusion is elliptical in shape and covers an area of about 3.2 km2. The ultramafic body has a distinct zoning, with gabbro to pyroxene peridotite to peridotite to dunite, from the ore-bearing rocks outward. Nickel grades at 0.3% to 0.6%, with maximum values up to 0.96%, whereas the Cu and Co grades are generally below the cut-off value. Reserves are estimated at 147,000 tonnes of Ni.
Ref.:
- Jingwen Mao, Pirajno, F., Zuoheng Zang, Fengmei Chai, Hua Wu, Shiping Chen, Linsong Cheng, Jianmin Yang, and Changqing Zhang (2007): A review of the Cu-Ni sulphide deposits in the Chinese Tianshan and Altay orogens (Xinjiang Autonomous Region, NW China): Principal characteristics and ore-forming processes. Journal of Asian Earth Sciences (in press).
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Map Reference: 40°34'30"N , 91°30'30"E
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