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Please use this identifier to cite or link to this item: http://hdl.handle.net/10481/7314

Title: Iron sulphides at the epithermal gold-copper deposit of Palai-Islica (Almería, SE of Spain)
Authors: Carrillo-Rosúa, Javier
Morales-Ruano, Salvador
Fenoll Hach-Alí, Purificación
Issue Date: 2003
Abstract: Au-Cu mineralisation at Palai-Islica occurs as disseminations in massive silicification and, more abundantly, in sulphide-bearing quartz veins. The major ore minerals in the deposit are pyrite ± chalcopyrite, sphalerite and galena and there are a great variety of accessory minerals, including Au-Ag alloys and native gold. Pyrite, the most abundant sulphide, is closely associated with gold. Seven different types of pyrite have been distinguished with a variable concentration of different trace elements. Among them only free of trace elements (type IV) is related to Au-Ag alloys. Pyrites associated with these Au-Ag alloys have a cubic and pentagonal dodecahedral habits whereas those with only the pentagonal dodecahedral habit are from barren zones. In addition, there is no significant invisible gold in pyrite, but there is relatively high Ag in collomorphic pyrite (up to 0.20 wt%) or type III pyrite (up to 1.47 wt%). As is the most abundant trace element in pyrite (up to 6.11 wt%), present as a metastable solid solution or as a non-stoichiometric element. Some kind of marcasite related with gold levels also have considerable amounts of trace elements (As, up to 1.15 wt%, Sb up to 0.40 wt%)
Sponsorship: Departamento de Mineralogía y Petrología. Grupo de Investigación de la Junta de Andalucía RNM-0131. Proyectos PB-97-1211 y BTE2001-3308
Publisher: Mineralogical Society
Description: El artículo original ha sido publicado por la Mineralogical Society disponible en: http://www.minersoc.org/pages/e_journals/minmag.html
Keywords: Pyrite
URI: http://hdl.handle.net/10481/7314
ISSN: 0026-461X
Rights : Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License
Citation: Carrillo Rosúa, F. J., Morales Ruano, S., & Hach-Alí, P. F. (2003). Iron sulphides at the epithermal gold-copper deposit of palai-islica (almería, SE spain). Mineralogical Magazine, 67(5), 1059-1080. doi:10.1180/0026461036750143
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