(万山特区, 铜仁地区, 贵州省, 中国)
Central part of the Tongren-Fenghuang belt of mercury deposits, that straddles the border between Hunan and Guizhou provinces, from Xinhuang in Hunan, in the southeast, to Tongren in Guizhou, then to Chatian, Machong, and Fenghuang, again in Hunan, in the northeast. This mercury-bearing area is 150 km long and 5 to 10 km wide, and its measured reserves of mercury account for 50% of the total mercury reserves of China. The main mining areas in this belt include Jiudiantang, Xiangjiadi, Wanshan, Lengfengdong, Yanwuping, Yunchangping (Dadongla), Hepingzhen, Chatian and Houziping. Each of these mines has produced at least a few cinnabar crystals, but most of the crystals are very small (<0.5 mm). Nearly all of the larger and finer crystals have been found in the mines lying in the belt's central segment, most notably the Wanshan, Yanwuping, Yunchangping and Chatian mines. The first three of these lie within the area of Tongren City, Guizhou Province, while the Chatian mine lies in Fenghuang County, Hunan Province.
Ref.:
- Guanghua Liu (2005): Chinese cinnabar. The Mineralogical Record 36(1), 69-80.
