Stones of Portugal Episode-4

Specimens produced in Iberian Peninsula- Cassiterite, Topaz, Galena, and Stannite 

Cassiterite 

Cassiterite with quartz, fluorapatite, and arsenopyrite: It’s a group of Cassiterite crystals that are sharp, shiny, and translucent on the edges. Fluorapatite crystals of almost white colour, aggregates of arsenopyrite crystals, and quartz crystals were found. 

Cassiterite with quartz: Double Cassiterite crystals with fine faces and edges that are translucent, bright with a brown-reddish reflection. 

Topaz

Topaz with Chlorite, Muscovite, Pyrite, fluorapatite, and Siderite: Irregular aggregates of Topaz crystals with fine faces are colorless bright with Chlorite, Muscovite, fluorapatite, Siderite, and Pyrite. 

Topaz with Arsenopyrite, fluorite, Muscovite, and Chlorite: Topaz crystals with good faces and edges between transparent and translucent characters. Arsenopyrite crystals in a slightly bluish color with small fluorite crystals and leafy Muscovite aggregates are found. 

Topaz with Arsenopyrite, Muscovite, and Quartz: Flattened topaz crystals one of them clearly dominant that are white and they are on a quartz and arsenopyrite mass coated by Chlorite with small Muscovite aggregates. 

Galena

Galena with Pyrite and Calcite: Aggregate of bright Cubo octahedral-like crystals well developed for a large size. They are with small Calcite crystals with Chalcopyrite.

Stannite

Fluorapatite with Siderite, Quartz, Stannite and Arsenopyrite. Tabular fluorapatite crystals are translucent with Arsenopyrite inclusions, Quartz, Siderite, and Stannite crystals.

Arsenopyrite with Stannite, Calcite, and Pyrite: Parallel polycrystalline Arsenopyrite growths with dark grey Stannite intergrowths with leafy Muscovite aggregates coated by small white Calcite crystals and aggregates of cubic Pyrite crystals.

Quartz with Siderite, Stannite, Chalcopyrite, and Pyrite: Transparent quartz crystal coated by very pale Siderite crystals and dark sphalerite aggregates with small Chalcopyrite, Stannite, and Pyrite crystals.

The above-described mineral specimen of various combinations of minerals are abundantly, rarely, usually, generally found in the mines of Minas da Panasqueira, Aldeia de São Francisco de Assis, Covilhã Castelo Branco, Cova da Beira in Centro Portugal. Fabre minerals for high-quality mineral specimens have been bringing the above-mentioned selected collectible minerals since 1971. They have a virtual sales platform on which you can view the specimens and place orders accordingly.