Two Fluorapatite crystals with Quartz on Muscovite matrix. The crystals of Fluorapatite, between short prismatic and thick tabular, show a very well-marked geometrical color zoning, deep violet on the central area and clear blue terminations. Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro Portugal (1987-2013) Specimen size: 3 × 2.9 × 2.5 cm = 1.2” × 1.1” × 1.0”
Neat Arsenopyrite with a more golden color than the typical ones. The crystal form is also very interesting. It is a floater, very shiny, and has small crystals of white Dolomite on the rear side. Very pleasant. Minas da Panasqueira / level 3, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro Portugal (2004) Specimen size: 11 × 6.5 × 3 cm = 4.3” × 2.6” × 1.2”
Twined Cassiterite RX14W6: Group of twinned dipyramidal crystals that are very bright with yellowish brown reflections and transparencies and show fine horizontal striations. We especially note the size of the main crystal which is very big compared with most of the samples from Panasqueira. Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro Portugal From Fabre Minerals
Epitaxial Marcasite on parallel growths of sharp Arsenopyrite crystals showing the so-called “key” shape. They are on matrix, with small white Calcite crystals, small Siderite crystals and leafy Muscovite aggregates. Minas da Panasqueira / level 2, Aldeia de São Francisco de Assis, Covilhã, Castelo Branco, Centro Portugal (1997)
Metauranocircite: Ba(UO2)2(PO4)2·6-8(H2O) Uranocircite: Ba(UO2)2(PO4)2·12(H2O) Comments: Brilliant, fluorescent yellow green crystals of uranocircite altered to meta-uranocircite. Location: Bergen, Vogtland, Saxony, Germany. Scale: 2.3 x 2.2 cm.