WebThe palladium telluride, merenskyite, has been described as the main PGE mineral in porphyry Cu–Au–Pd–Pt deposits, such as Skouries, Santo Tomas II, Biga, Elatsite, Madjadanpek, Mamut. It occurs mostly as inclusions in chalcopyrite and bornite, as euhedral crystals at the margins of chalcopyrite or enclosed by electrum and hessite in ... WebThe major products from porphyry copper deposits are copper and molybdenum or copper and gold. The term porphyry copper now includes engineering as well as geological considerations; It refers to large, …

Porphyry Deposits: The World’s Largest Source of Copper

WebApr 1, 1998 · Models which reconcile isotopic variation, systematic REE behavior, protracted local but largely noncomagmatic magmatism and the increasing development of porphyry mineralization include: (1) progressive metasomatism of the crustal component, (2) increasing assimilation of amphibolitic crust by mantle basalts, and (3) migration of … WebPorphyry deposits are large (from 100 million to several billion metric tons [t]), low-grade (0.2–1.5 wt% copper, < 0.01–0.3 wt% molybdenum, and < 0.01–1 g/t gold; Fig. 3), disseminated and breccia deposits commonly hosted both in granitoid intrusions and the overlying country rocks, and directly associated with granitoid porphyry dikes or plugs. sls clubs

(PDF) Delineation of a Porphyry Copper-Gold system using

WebMar 11, 2015 · Large Size, Low Grade – Porphyries typically have 100 million to 5 billion tonnes of ore with a lower grade (0.2% to >1% copper). It is the size of these deposits that allow for bulk mining and economies of scale. Long Mine Life – The size of porphyry systems usually mean that the life of the mine can be multi-decades long. WebMay 28, 2014 · These deposits provide over 60% of the world’s copper and include other important metals such as molybdenum, gold and silver. Porphyry copper deposits are known for their low grades and very high tonnage. A porphyry is not a rock type, but rock with a particular texture. This porphyritic rock has large feldspar crystals in a finer grained … WebJan 10, 2024 · Bacteria_ppt.ppt roh009 • ... Prominent examples are several Chilean copper porphyry deposits that have important “exotic oxide” Schematic profile of a deeply weathered copper sulphide ore deposit, displaying the supergene “secondary” zonation resulting from redistribution of elements. sohrdal gard/a/s