Boleite

Mammoth-St. Anthony Mine, St. Anthony deposit, Tiger, Mammoth District, Pinal County, Arizona  USA

Specimen size: 0.9 × 0.8 × 0.9 cm = 0.35” × 0.31” × 0.35”
Main crystal size: 0.7 × 0.7 cm = 0.28” × 0.28”