Geochemical and Geological Exploration for Gold-Copper Deposits in Southern Luzon, The PhilippinesLinkagehelicitymagnetohydrodynamicssolar magnetismA kinematic approach to short-term geomagnetism has recently been based upon pre-Maxwell frozen-flux electromagnetism. A complete dynamic theory requires coupling ...
Therefore, initial magma enrichment in copper and sulphur, although adding to the metallogenic potential, is not necessary to form a giant deposit. Our results link the respective durations of magmatic and hydrothermal activity from well-known large to supergiant deposits to their metal endowment. ...
hypogene formation of bornite in Miduk as an evidence deposit, it is interesting to consider this possibility that formation of bornite in porphyry copper deposits could be mainly attributed to evolutionary processes and as a result of leaching-recycling-fixation or addition copper to the system. ...
Across the four deposits in the project, total mineral resources now stand at 3.4 Mt indicated and 6.6 Mt inferred, using various NSR cut-offs. The Dundonald North and South deposits remain unmined, offering strong exploration potential, with further drilling planned to upgrade resources. CEO ...
It is important to note that although copper concentrates from porphyry deposits are not rich in nickel and antimony, their concentrations increased in smelters because copper scrap and PCB-dominated E-wastes are often used as secondary feeds to the process (discussed in more detail in Section 4)...
Some of the world’s largest copper companies are doing everything they can to expand existing mines and acquire prospective new deposits, as they seek to replace their rapidly depleting copper reserves and resources. In 2017 the Chilean government approved a $2.5 billion expansion of BHP’s Spen...
The Herberton Mineral Field hosts multiple small-scale, polymetallic Sn-Cu and Sn-Zn deposits. The Baal Gammon and Isabel polymetallic deposits in the Herberton Mineral Field contain early Sn that is overprinted by sulfides. At Baal Gammon, the sulfide overprinting is Cu-In-rich, whereas Isabel...
Hedenquist J W, Arribas A, Reynolds T J. 1998. Evolution of an intrusion-centered hydrothermal system: Far Southeast-Lepanto porphyry and epithermal Cu-Au deposits, Philippines. Econ Geol, 93: 373–404 Article Heinrich C A, Günther D, Audétat A, Ulrich T, Frischknecht R. 1999. Metal...
Eastern 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 mineralization is an exception to this, since it is located in the Bogda Orogenic Belt, north of Eastern Tianshan. We...
The copper contained trace elements that linked it to geological deposits in the Great Lakes region. These discoveries suggest a long-distance trade connection between Georgia and the Great Lakes region, a greater distance than was ever known before. [7] ADVERTISEMENT Copper is easily stretched, ...