Porphyry deposits and oxidized magmas

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August undefined, 2024

WebJul 21, 2024 · In contrast to this paradigm of punctuated magmatic fertility, others note that even relatively Cu-poor magmas (i.e. <75 ppm Cu) contain sufficient Cu to allow the generation of large porphyry ...

In Situ Mineralogical Constraints on Magmatic Process …

WebApr 12, 2024 · The Kighal porphyry Cu deposit, in the Arasbaran magmatic belt (AMB), is hosted by Late Eocene to Oligocene volcanic rocks and Miocene high–K calc–alkaline … 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 … flix bus brugge to paris

Porphyry deposits and oxidized magmas - ScienceDirect

WebMar 23, 2024 · Arc volcanics are more oxidized than mid-ocean ridge basalts (MORB), but it is debated whether this is a mantle feature or a result of magmatic evolution. Copper, a sulfur-loving element, has been used to trace the behavior of redox-sensitive sulfur during mantle melting and infer similar redox states of sub-arc and sub-ridge mantle. WebNov 1, 2015 · The data of zircon Ce4+/Ce3+ratios and associated oxygen fugacity values in magma from ore-bearing intrusions indicate that more oxidized magmas are associated … WebThese oxidized melts transport metals and volatiles to magma chambers located in the mid to upper crust, where fractional crystallization and volatile exsolution result in porphyry ore formation. Porphyry deposits are typically classified on the basis of their economic metal endowment ( Kesler, 1973 ). flixbus brno to vienna

The geological characteristics, geochemical signature and …

Geochemistry and fluid characteristics of the Dalli porphyry …

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 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 … flixbus brussels officeWebOct 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. great gift ideas for dad

"WebMar 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 + … " - Porphyry deposits and oxidized magmas

Porphyry deposits and oxidized magmas

Sulfur and chlorine budgets control the ore fertility of arc magmas ...

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. 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 …

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WebRegional geology The formation of porphyry Cu ± Mo ± Au deposits depend criti- The newly discovered Dalli porphyry Cu–Au deposit is placed in cally on the shallow (10–5 km depth) emplacement of the central part of Urumieh–Dokhtar magmatic belt, which subduction-related magmas, where high-temperature (300– extends over a strike length ... 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

WebMar 1, 2015 · Porphyry Cu- (Mo)- (Au) deposits are essentially magmatic-hydrothermal systems, which are generally initiated by injection of oxidized magmas saturated with … WebMar 8, 2024 · Porphyry systems, the most important reserves of Cu and Mo with significant Au, are genetically linked to the emplacement of hydrous and oxidized intermediate to acidic magmas, in response to temporal and geochemical evolution of crust in orogenic terranes.

Webpotassic magmas characterized by varying oxidation states (fO 2), which contribute to different ore mineral assemblages and contrasting relationships to hydrothermal alteration zones. Gold-rich porphyry copper deposits are typically characterized by hydrous and highly oxidized causal magmas. Variations in the styles 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 …

WebEastern Tianshan hosts a number of porphyry Cu deposits. However, these mainly formed in the Jueluotage Belt, in the middle part of Eastern Tianshan. The Tonggou porphyry Cu …

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 … flixbus brussels airportWebJan 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 understand the oxidation status of granitic rocks throughout the earth history, particularly of older granitic terrains (early Earth) containing porphyry copper deposits. great gift ideas for familyWebApr 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 … great gift ideas for girlfriend birthdayWebApr 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 … great gift ideas for christmasWebJan 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 … great gift ideas for dads birthdayWebNov 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... great gift ideas for golfersWebOct 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 flixbus buchen vor ort