Stibnite

Goldstrike Mines, Deep Post orebody, Betze-Post pit, Lynn District, Eureka County, Nevada  USA

Specimen size: 6.4 × 4.4 × 1.9 cm = 2.52” × 1.73” × 0.75”
Main crystal size: 0.4 × 0.1 cm = 0.16” × 0.04”