Epitactic Arsenopyrite-Marcasite with Pyrite

Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1982)

Specimen size: 7.8 × 6.9 × 5.2 cm = 3.07” × 2.72” × 2.05”
Main crystal size: 1.8 × 1.8 cm = 0.71” × 0.71”