Shiyingtan Mine (Xitan Mine), Shanshan Co. (Piqan Co.; Pichan Co.), Tulufan Prefecture (Turfan Prefecture; Turpan Prefecture), Xinjiang Autonomous Region, China
|Latitude & Longitude (WGS84):||42° 5' 8'' North , 90° 11' 49'' East|
|Latitude & Longitude (decimal):||42.08583,90.19722|
|Köppen climate type:||BWk : Cold desert climate|
|Name(s) in local language(s):||石英滩金矿 (西滩金矿), 鄯善县 (پىچان ناھىيىسى), 吐鲁番地区 (تۇرپان ۋىلايىتى), 新疆维吾尔自治区, 中国|
Low sulphidation epithermal gold-silver deposit, located in the western part of the East Tianshan. The region is mainly underlain by Permian andesitic-dacitic rocks and volcanic breccia and their subvolcanic equivalents. There possibly was also a Permian volcanic caldera in the vicinity; amygdaloidal andesite and medium- to fine-grained tonalite recognized near the deposit have Rb-Sr whole rock isochron ages of 285±12 Ma and 293±1 Ma, respectively. Eighteen ore-bearing veins have been identified in the mine. The orebodies are arranged along a nearly WNW-trending set of tensile faults and form a swarm of auriferous quartz veins, that are up to 25 m thick, up to 200 m long, and extend 100 m downdip. The distribution of the orebodies is considered to be controlled by the intersection of the fracture system of the caldera with regional faults. Unlike many epithermal gold deposits, including the Axi gold deposit in the West Tianshan, the Shiyingtan gold deposit shows relatively weak wallrock alteration, which is silicification, sericitization, chloritization, and carbonatization.
23 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Permian - Carboniferous|
252.17 - 358.9 Ma
|Carboniferous-Permian mixed volcanic, volcaniclastic and sedimentary rocks|
Age: Paleozoic (252.17 - 358.9 Ma)
Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.