Acanthite (Se-bearing) with Pyrite

San José Mine, San José del Progreso, Municipìo San José del Progreso, Ocotlán District, Valles Centrales Region, Oaxaca  Mexico (2018)

Specimen size: 6.5 × 4.5 × 3.4 cm = 2.56” × 1.77” × 1.34”