SIDERITE, QUARTZ, PYRITE

Floating specimen formed by two quartz crystals with parallel growth, with striated prismatic faces and good transparence. They are partially covered by small but brilliant pyrite crystals. A very large siderite crystal stands out, with pseudohexagonal shapes due to the parallel growth of numerous very flattened rhombohedral crystals. The siderite crystal is also sprinkled with brilliant pyrite crystals. The main crystal: 9,8 x 3,9 x 3,8 cm.

ORIGIN: PANASQUEIRA MINES, VILLAGE OF SÃO FRANCISCO DE ASSIS, COVILHÃ, CASTELO BRANCO, COVA DA BEIRA, PORTUGAL

DIMENSIONS: 3.9x3.8x9.8