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 … WebOct 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
Genesis of hydrous-oxidized parental magmas for porphyry Cu …
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. 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 ). maytag bravos xl washer won\u0027t power on
Oxidation Condition and Metal Fertility of Granitic Magmas: Zircon ...
WebJan 29, 2024 · Some porphyry systems contain abundant pyrrhotite and (or) arsenopyrite in the mineral assemblages. Systems that exhibit bornite-bearing assemblages containing abundant molybdenite are commonly arsenic- and gold-poor and tend to be associated with more oxidized arc magmas. WebNov 16, 2024 · Porphyry deposits are characteristically enriched in Cu and/or Mo and/or Au, all of which are relatively rare and valuable metals. Consequently, even quite low-grade deposits can be economic, and porphyries are commonly referred to as large-tonnage, low-grade deposits. ... Fractional crystallization of hydrous, moderately oxidized arc magmas ... 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 ... maytag bravos xl washer water leak