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Título: | Genesis of filamentary pyrite associated with calcite crystals. |
Autor: | Bonev, Ivan K.; García Ruiz, Juan Manuel CSIC ORCID; Atanassova, Radostina; Otálora, Fermín CSIC ORCID; Petrussenko, Svetoslav | Palabras clave: | Crystal morphology Filamentary crystals Calcite Filamentary pyrite Contemporaneous growth |
Fecha de publicación: | nov-2005 | Editor: | Schweizerbart science publishers | Citación: | European Journal of Mineralogy 17(6): 905-913 (2005) | Resumen: | The calcite of the hydrothermal Surneshko Kladenche copper vein deposit from the Rossen ore field, Bulgaria, sometimes encloses peculiar filamentary pyrite crystals. Three successive calcite generations were observed belonging to a low-temperature (<235°C) carbonate paragenesis formed in open cavities of the ore veins after the main chalcopyrite mineralisation. Three generations of pyrite crystals are associated with these calcite crystals: pyrite 1, with [001] elongated columnar crystals which crystallised in open space; pyrite 2, in groups of long (up to 10 mm) sub-parallel tortuous filaments of varying thickness (3-20 µm) which are oriented nearly perpendicular to the surfaces of a transient w{315} scalenohedral calcite crystal zone; and pyrite 3, made of slightly elongated small crystals, located in the outermost v{211} zone of the same scalenohedral calcite crystals. The columnar pyrite 1 is formed by subsequent thickening of thin straight whiskers rapidly grown under diffusional regime, whereas the filamentary pyrite 2 and 3 grew contemporaneously with the enclosing calcite crystal. | Versión del editor: | http://dx.doi.org/10.1127/0935-1221/2005/0017-0905 | URI: | http://hdl.handle.net/10261/18810 | DOI: | 10.1127/0935-1221/2005/0017-0905 | ISSN: | 0935-1221 |
Aparece en las colecciones: | (IACT) Artículos |
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