Quartz with Siderite

Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Cova da Beira, Centro  Portugal (±1985)

Specimen size: 4 × 2.6 × 0.5 cm = 1.57” × 1.02” × 0.20”
Main crystal size: 3 × 0.7 cm = 1.18” × 0.28”