Stibnite on Quartz

McLaughlin Mine, Knoxville, Knoxville District, Napa County, California  USA

Specimen size: 3 × 2.8 × 3.3 cm = 1.2” × 1.1” × 1.3”
Main crystal size: 1.1 × 0.1 cm = 0.4” × 0.0”