Arsenopyrite with Quartz and Muscovite

Minas da Panasqueira, levels 0-1, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (04/2017)

Specimen size: 15.6 × 11.3 × 4.5 cm = 6.14” × 4.45” × 1.77”
Main crystal size: 1.8 × 1.1 cm = 0.71” × 0.43”