Porphyry deposits and oxidized magmas
WebOct 1, 2002 · Porphyry deposits and oxidized magmas Ore Geology Reviews, Volume 65, Part 1, 2015, pp. 97-131 Show abstract Research article Oxygen fugacity and porphyry mineralization: A zircon perspective of Dexing porphyry Cu deposit, China Geochimica et Cosmochimica Acta, Volume 206, 2024, pp. 343-363 Show abstract Research article WebNov 1, 2015 · The data of zircon Ce 4+ /Ce 3+ ratios and associated oxygen fugacity values in magma from ore-bearing intrusions indicate that more oxidized magmas are associated with the formation of larger porphyry Cu deposits. Such a conclusion may potentially be used in regional exploration for porphyry Cu deposits in the CAOB.
Porphyry deposits and oxidized magmas
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WebJan 1, 2014 · Porphyry copper deposit is a typical product of the oxidized magmas, and the most discovered ores are strongly biased to Cenozoic age (Fig. 2 ). It is interesting to … WebPorphyry deposits are the world’s leading source of copper and molybdenum. This deposit type also contains a great abundance of gold and silver. Gold-rich porphyry deposits …
WebThe world’s largest current Cu resource is volcanic arc-hosted, porphyry copper deposits. Whether unusual parental magmas or fortuitous combinations of processes accompanying emplacement of common parental arc magmas (e.g., basalt) is required for ore deposit formation, remains unclear. Spatial and tectonic associations of adakite (andesite with … WebAug 14, 2024 · Oxidized calc-alkaline magmas control porphyry mineralization by influencing the speciation and solubility of sulfur [73,80], high f O 2 is more favorable for forming metal-rich magmas. Many researchers think that oxidized magmas can hold high metal content and are conducive to forming porphyry deposits [75,81].
WebApr 13, 2024 · Most known porphyry Cu deposits formed in the Phanerozoic and are exclusively associated with moderately oxidized, sulfur-rich, hydrous arc-related magmas … WebDec 1, 2014 · Guangzhou Institute of Geochemictry, CAS Abstract Essentially all porphyry deposits are closely associated with oxidized magmas at convergent margins. The best oxygen fugacities for...
WebNov 5, 2016 · Therefore, porphyry Cu deposits are usually oxidized (with oxygen fugacities > ΔFMQ +2) (Mungall 2002; Sun et al. 2015). The problem is that while most of the magmas at convergent margins...
WebJul 6, 2024 · Porphyry deposits are large, low-grade metal ore bodies that are formed from hydrothermal fluids derived from an underlying magma reservoir. They are important as … how many horses run the kentucky derbyWebApr 15, 2024 · Porphyry Cu deposits (PCDs) are presently the main source of Cu (~75%) and a substantial source of Au (~20%) around the world [].The ore bodies of PCDs … how many horses used in ww1WebOct 19, 2024 · Magmatic amphibole phenocryst compositions indicate that the parental magmas are all relatively oxidized (ΔFMQ = 1.7 ± 0.6), and H 2 O-rich (3.8 ± 0.3 wt% H 2 O). These results are consistent with those estimated from zircon compositions (ΔFMQ = 1.8 ± 0.8) and high whole-rock Sr/Y ratios (75 ± 31), respectively. how many horses survived in ww1WebThe infertile suites are relatively reduced S- and A-type and relatively dry A- and I-type magmas. The fertile suites are more oxidized and hydrous, and … how many horses run in melbourne cupWebMar 1, 2015 · Linkage between oxidized magmas and porphyry deposits 3.2.1. Sulfur oxidation, sulfide under saturation and residual sulfide. Copper, Au and Mo are all chalcophile elements,... 3.2.2. Sulfate reduction. At oxygen fugacities higher than ΔFMQ + … how many horses race in the melbourne cupWebOct 13, 2013 · Genesis of hydrous-oxidized parental magmas for porphyry Cu (Mo, Au) deposits in a postcollisional setting: examples from the Sanjiang region, SW China Lei-Luo Xu Jing-Jing Zhu how a flywheel nerf gun worksWebApr 15, 2024 · Porphyry Cu deposits (PCDs) are presently the main source of Cu (~75%) and a substantial source of Au (~20%) around the world [].The ore bodies of PCDs predominantly occur at shallow crustal level around dike-like porphyries, e.g., [2,3].It is well known that PCDs are usually associated with oxidized and volatile-rich magmas within shallow … howa food oss