Mineral Specimen #226 Tourmaline, Siderite, Quartz

This specimens has masses of dark  colored indeterminant Tourmaline needles. When the specimen is moved,  a brass colored flash is observed. Under a 10x loupe the needles are a transparent brown. The species of Tourmaline is probably Dravite. The off-white main crystal is a large Siderite crystal. There are also white Quartz crystals, some small crystals of Siderite after Fluorapatite, and some small, flattened crystals of Dolomite.

Panasqueira Mines, Panasquiera, Portugal

76.5 x 5.5 x 3.7 cm

$55                                                                                                                                                                         50-99