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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...
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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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Christian Creixell,Javier Fuentes,Hessel Bierma,Esteban Salazar
Pág. 469 - 507
Cretaceous porphyry copper deposits of northern Chile (28º-29º30? S) are genetically related with dacitic to dioritic porphyries and they represent a still poorly-explored target for Cu resources. The porphyries correspond to stocks distributed into two ...
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Nikolai Berdnikov, Pavel Kepezhinskas, Natalia Konovalova and Nikita Kepezhinskas
Gold is typically transported by mafic and evolved magmas into the upper crust to be deposited in shallow oxidized porphyry and epithermal environments. However, the magmatic behavior of gold is still poorly understood and warrants further attention. Add...
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Nikolai Berdnikov, Victor Nevstruev, Pavel Kepezhinskas, Ivan Astapov and Natalia Konovalova
While gold partitioning into hydrothermal fluids responsible for the formation of porphyry and epithermal deposits is currently well understood, its behavior during the differentiation of metal-rich silicate melts is still subject of an intense scientifi...
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Demetrios G. Eliopoulos, Maria Economou-Eliopoulos and Maria Zelyaskova-Panayiotova
Porphyry Cu?Au?Pd±Pt deposits are significant Au resources, but their Pd and Pt potential is still unknown. Elevated Pd, Pt (hundreds of ppb) and Au contents are associated with typical stockwork magnetite-bornite-chalcopyrite assemblages, at the central...
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Victor Maksaev,Francisco Munizaga,Marcos Zentilli,Reynaldo Charrier
Pág. 153 - 171
Apatite fission track data for Miocene plutons of the western slope of the Principal Andean Cordillera in central Chile (33-35°S) define a distinct episode of enhanced crustal cooling through the temperature range of the apatite partial annealing zone (~...
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Bin Du, Zian Yang, Lifei Yang, Qi Chen, Jiaxuan Zhu, Kangxing Shi, Gao Li, Lei Wang and Jia Lu
Zircon Hf-isotopic mapping can be regarded as a useful tool for evaluating the coupling relationship between lithospheric structure and metallic mineralization. Hence, this method shows important significance for mineral prediction. To explore this poten...
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Christos L. Stergiou, Vasilios Melfos, Panagiotis Voudouris, Lambrini Papadopoulou, Paul G. Spry, Irena Peytcheva, Dimitrina Dimitrova and Elitsa Stefanova
The Gerakario Cu-Au porphyry deposit in the Kilkis ore district, northern Greece, contains epithermal quartz-stibnite veins on the eastern side of the deposit, which crosscut a two-mica gneiss. Metallic mineralization in these veins consists of stibnite ...
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Abdallah Atef, Adel A. Surour, Ahmed A. Madani and Mokhles K. Azer
Since Antiquity, sustainable resources of gold and copper have been mined at two prominent prospects in the north Eastern Desert of Egypt, namely the south Gabel Um Monqul (SGUM) and Gabal Al Kharaza (GKZ). Mineralization is hosted by Neoproterozoic shie...
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Jose Perello,Jose Cabello
Pág. 73 - 92
RESUMEN. El analisis de 47 depositos tipo porfido cuprifero, considerados anomalos en oro (leyes ~0,3 ppm Au) revela que sus reservas son variables entre los 3 mil millones de toneladas con leyes de 0,8% Cu; 0,31 ppm Au y 5 millones de toneladas con leye...
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José Meulen Piquer Romo,Gonzalo Yáñez,Orlando Rivera,David Cooke
Pág. 223 - 239
Long-lived, high-angle fault systems constitute high-permeability zones that can localize the upward flow of hydrothermal fluids and magma throughout the upper crust. Intersections of these types of structures can develop complex interference patterns, w...
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