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María Josefina Pons,Juan Mendiberri,Martín Arce,Gerson Alan Greco,Telma B. Musso,María Lis Fernández,Natalia Hauser,Pamela Aparicio González
Pág. 93 - 126
The Sofía-Julia-Valencia vein system, located in the Andacollo mining district in central west Argentina, is hosted by ENE-WSW oriented strike-slip faults which are the result of reactivation of normal faults affecting Carboniferous to Jurassic rocks dur...
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Munawar Khalil, Steve S. Doo, Marleen Stuhr and Hildegard Westphal
Ocean acidification and ocean warming compromise the capacity of calcifying marine organisms to generate and maintain their skeletons. While many marine calcifying organisms precipitate low-Mg calcite or aragonite, the skeleton of echinoderms consists of...
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Zhongrong Qiu, Chunhui Tao, Weilin Ma, Ágata Alveirinho Dias, Siyi Hu, Yuexiao Shao, Kehong Yang and Weiyan Zhang
The geochemistry and mineralogy of sediments provide relevant information for the understanding of the origin and metallogenic mechanism of ferromanganese nodules and crusts. At present, there are still few studies on the sediment origin of the Clarion?C...
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Nathan A. Forsythe, Paul G. Spry and Michael L. Thompson
The Navilawa caldera is the remnant of a shoshonitic volcano on Viti Levu, Fiji, and sits adjacent to the low-sulfidation Tuvatu epithermal Au?Te deposit. The caldera occurs along the Viti Levu lineament, approximately 50 km SW of the Tavua caldera, whic...
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Konstantinos G. Nikolakopoulos, Paraskevi Lampropoulou, Dimitrios Papoulis, Aikaterini Rogkala, Panagiota P. Giannakopoulou and Petros Petrounias
This study presents the combined use of field mapping, remote sensing data analysis, mineralogy, spectroscopy and GIS techniques for the geological mapping of Antiparos Island. Antiparos is part of the Cyclades Blueschist Belt located in central Aegean, ...
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Felipe Aguilera, Susana Layana, Augusto Rodríguez-Díaz, Cristóbal González, Julio Cortés, Manuel Inostroza
Pág. 166 - 196
A multidisciplinary study that includes processing of Landsat ETM+ satellite images, chemistry of gas
condensed, mineralogy and chemistry of fumarolic deposits, and fluid inclusion data from native sulphur deposits, has
been carried out in the Lastarria ...
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Waldo Vivallo,Sergio Espinoza,Fernando Henriquez
Pág. 75 - 88
ABSTRACT. Metasomatism and hydrothermal alteration in the Cerro Negro Norte iron ore district, Copiapo, Chile. The magnetite-apatite ores in the Cerro Negro Norte iron district, Copiapo, are hosted by hydrothermally altered andesitic volcanic rocks. As a...
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Francisco Munizaga,Juan Carlos Reyes,Jan Olov Nystrom
Pág. 189 - 195
RESUMEN. El distrito minero Cerro Negro agrupa depósitos estrato ligados de cobre tipo manto, hospedados en rocas sedimentarias volcanoclásticas, Sulfuros de Cerro Negro exhiben d34S en el rango -21,2 y -15,6 %0, lo cual contrasta con los valores en torn...
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Gabriela Rosales,Mario Vergara,Sonia Helle,Ursula Kelm,Jimena Cucurella,Ivonne Flores,Jorge Oyarzun
Pág. 229 - 235
ABSTRACT. Mineralogy and genesis of the combarbalita in Northern Chile. Combarbalita is the local name of an ornamental stone formed by advanced argillic alteration of volcanic materials. Combarbalita is mined as a decorative stone from quarries that are...
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Alvaro Puig,Sergio Diaz,Lucia Cuitino
Pág. 57 - 82
Resumen. Los yacimientos epitermales El Guanaco (Au, Cu), Cachinal de La Sierra (Ag) y El Soldado (Ag), ubicados entre 24°52'-25°06' y 69°32'W, estan geneticamente relacionados con un sistema de calderas anidadas del Paleoceno-Eoceno Inferior. Las rocas ...
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