Description: Bournonite after Tetrahedrite and on Fluorite. Yaogangxian Mine, Yizhang, Chenzhou, Hunan, China. Specimen size: 2.6 × 2.2 × 1.2 cm (1.0” × 0.9” × 0.5”) Photo & Specimen: Reference Specimens ( http://www.fabreminerals.com/specimens/RSCN-china-notable-specimens.php#BB9C6 )

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