Yaogangxian Mine, Hunan
A tungsten-tin mine in the mountains of southern Hunan. Famous for fluorite in every conceivable color (the purple-green color zoning is iconic), scheelite, arsenopyrite, wolframite, and beryl. The 'porcelain blue' cubic fluorite phantoms from Yaogangxian are arguably the most-photographed Chinese specimens of the modern era.
Daye, Hubei + Shangbao, Hunan
Daye, near Huangshi, produces gleaming golden pyrite cubes on dolomite-calcite matrix, often with iridescent surfaces. Shangbao Mine in central Hunan produces the famous Shangbao green fluorite, sometimes capped by colorless quartz. Both are skarn deposits formed where granite intrusions baked nearby carbonate rocks.
Xuebaoding, Sichuan + minor mines
Xuebaoding in Pingwu County produces gemmy cassiterite, beryl, and the famous scheelite-on-beryl pairings. Lengshuijiang in central Hunan is the world-class antimony locality, producing dramatic stibnite swords. Xianghualing in southern Hunan produces white fluorite cubes and rare polylithionite. The smaller mines — Jiangxi's Dexing pyrite, Inner Mongolia's Huanggang skarn, Guangxi's tin deposits — round out the picture.