Location: Panasqueira Mine, Covilhã, Castelo Branco, Portugal.
Anhedral to subhedral aggregate of translucent grayish green hexagonal crystals of Fluorapatite, surrounded by a matrix of cream color lamellar crystals of Siderite, small white rhombhoedric Dolomite, gray micaceous lamellae of Sericite (variety of Muscovite) and some prismatic euhedral crystals (up to 1cm) metallic gray Arsenopyrite. Sample with 6.7 x 6.0 x 4.8cm and 169 grams. Formed in mineralized veins of quartz, sulfides, wolframite, cassiterite, micas, fluorite, carbonates, among others, associated with the generation of a greisen dome by granitic intrusion in Paleozoic schists and graywackes.