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MD-192628
Stannite, Bismuthinite, Quartz
Cabinet, 12.4 x 5.4 x 5.4 cm
Yaogangxian Mine, Yizhang Co., Chenzhou Prefecture, Hunan Province, China
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Stannite, a sulfide of copper, iron an tin, and bismuthinite, the sulfide of bismuth, are both rare. Here, you have both of these rare sulfides on a single specimen. The larger, rough dark crystals to about 1 cm are the stannite, and the bismuthinite is represented by needle-like crystals included inside the quartz crystals.