Silver with coatings of Acanthite and with Calcite

New Nevada Mine, Cerro San Antonio, San Miguel, Batopilas, Andrés del Río mining district, Municipio Batopilas, Chihuahua  Mexico (±1980)

Specimen size: 6.3 × 5.3 × 2.3 cm = 2.48” × 2.09” × 0.91”
Main crystal size: 4.7 × 2.6 cm = 1.85” × 1.02”