Mineralogy and mineral chemistry of precious metals of the Cu-Au mineralisation at the Palai-Islica deposit, Almería, SE Spain Carrillo Rosúa, Francisco Javier Morales Ruano, Salvador Fenoll Hach-Alí, Purificación Mineralizaciones metálicas Ore mineralization Silver Plata Precious metals Metales preciosos Epitermal Epithermal El capítulo de libro ha sido publicado en los “Proceedings of the sixth biennial SGA meeting” The Au-Cu mineralisation of Palai-Islica is hosted within strongly hydrothermally altered calc-alkaline rocks of the Cabo de Gata-Cartagena volcanic belt. Mineralisation is related to subhorizontal levels (named levels A, B, C and D, from bottom to top). Au and Cu are economically the most important elements, with Ag also being of potential interest. The Au-bearing phases of the Palai-Islica deposits are restricted to Au-Ag alloys (present at levels A, B and C) and native gold (found only at level D). The Ag-bearing minerals in levels A, B and C are fahlore, Au-Ag alloys, Ag-Bi-Pb sulphosalts, Ag sulphides, Ag tellurides, collomorphic pyrite, and galena. Within level D, the only significant values of Ag are found in some collomorphic pyrite. As deduced from textural studies and chemical features of different mineral phases, the noble metals at levels A, B and C evolved from Au-rich to Ag-rich as time progressed. Level D is a gold-rich silver-poor level and is apparently not connected with the genesis of the rest of the deposit 2015-05-11T09:20:18Z 2015-05-11T09:20:18Z 2001-08 info:eu-repo/semantics/bookPart Carrillo-Rosúa, F.J.; Morales-Ruano, S.; Fenoll Hach-Alí, P. Mineralogy and mineral chemistry of precious metals of the Cu-Au mineralisation at the Palai-Islica deposit, Almeria, SE Spain. In: Piestrzyñski, A. et al., (eds.), Mineral deposits at the beginning of the 21st century: 6thn Biennal SGA-SEG Meeting, August 26-29, 2001, Kraków, Poland. Rotterdam: A.A. Balkema, 2001. pp. 715-718. [http://hdl.handle.net/10481/35936] 9789026518461 http://hdl.handle.net/10481/35936 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/openAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License Balkema