Volcanic-hosted massive sulphide (VHMS) deposit. The mineralization occurs within an ultramafic volcanic breccia, or between the breccia and its overlying Mg-rich carbonate rocks and volcanic sedimentary rocks. The volcanic rocks that host the deposit are among the most basic host rocks known for VHMS deposits, and the Derni deposit represents the most basic member in the VHMS deposit spectrum.
Ref.:
- Duan Guolian (1991): The Derni pyrite type Cu-Co-deposit: its genesis and difference from Cu-Ni sulphide deposits. Geology and Prospecting 27(2), 20-24 (in Chinese with English abstract).
- Xu Yong, and Zhou Xinyou (2000): Cobalt Deposits in the Central China Orogenic Belt. Acta Geologica Sinica 74(3), 540-543.
- Yuwang Wang, Kezhang Qin, Yanggeng Tan, and Zenqian Hou (2000): The Derni Cu-Co Massive Sulfide Deposit, Qinghai Province, China: Ultramafic Volcanic-hosted Submarine-exhalative Mineralization. Exploration and Mining Geology 9(3/4), 253-264.
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Map Reference: 34°23'42"N , 100°7'51"E
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13 entries listed. 11 valid minerals.
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