La Preciosa Argentina Mine, Papachacra Pegmatites, Papachacra, Belén Department, Catamarca, Argentina
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Company: Lucero, Pedro.
Record, register of mines of the province of Catamarca: L-171/93.
Topaz crystals are mostly idiomorphic, often transparent, with fluid inclusions and less solid. The coloration varies from colorless to gently colored in brown orange tones, clear to greenish blue; prismatic habit reaching up to 10 cm in length (C axis) is presented. Are associated with idiomorphic crystals of smoky quartz, Amethyst, microcline, albite (var. Clevelandite), Muscovite, black tourmaline (var. Schörl), fluorite, violet and green, among others. By its crystalline purity and absence of cracks, a significant percentage shows ideal characteristics to grind. Many others are useful for the production of cabochons. So far available sizes vary on average 3 to 5 cm in length, depending on the axis C. The crystals that have a good development in size and shape, no damage on corners and edges, are ideal for collection, offered in isolated or crystals embedded in a matrix or associated with other minerals.
3 entries listed. 2 valid minerals.
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Padrón de Minas de la Provincia de Catamarca.