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De'erni (Deerni; Derni) Cu-Co-(Zn) deposit, Dur'ngoi Ophiolite, Maqên Co., Golog (Guoluo) Autonomous Prefecture, Qinghai (Chinghai) Province, China

Latitude: 34°23'42"N
Longitude: 100°7'51"E
Volcanic-hosted massive sulphide (VHMS) deposit. The mineralization occurs within an ultramafic volcanic breccia, or between the breccia and 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 world-wide.

References

- 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).
- Zhang Wusheng and Chen Jie (1996): New recognition on the origin of the Deerni copper deposit - A Cu-Co-bearing massive sulfide deposit in ultrabasic rocks. Qinghai Guotu Jinglue 5(1).
- 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.

Mineral List

Albite
'Apatite'
Azurite
Biotite
Bornite
Calcite
Chalcanthite
Chalcocite
Chalcopyrite
'Chlorite Group'
Cobaltpentlandite
Copper
Covellite
Cubanite
Cuprite
Epidote
Fluorite
Gold
Hausmannite
Hematite
Hercynite
var: Picotite

Ilmenite
Lead
Limonite
Magnetite
Malachite
Marcasite
Molybdenite
Muscovite
var: Sericite

'Olivine'
Pyrite
var: Cobaltoan Pyrite
var: Hengleinite
Pyrrhotite
Quartz
Rutile
'Serpentine Group'
Sphalerite
Talc
Tenorite
'Tourmaline'
Zircon


42 entries listed. 31 valid minerals.

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