Siderite with Arsenopyrite and Muscovite

Minas da Panasqueira, level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (03/1995)

Specimen size: 6.2 × 5.1 × 2.6 cm = 2.44” × 2.01” × 1.02”
Main crystal size: 5.1 × 4.2 cm = 2.01” × 1.65”