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The geology, tectonics and stratigraphy of the Monchegorsk region (Kola Peninsula, Russia) is briefly described in the guidebook. The geological structure, ore localization and mineralogy of Cu-Ni-PGE and Cr occurrences in the major layered intrusions (Monchepluton, Imandra lopolith, Monchetundra intrusion) are presented in more detail.
The Cadia Ridgeway deposit is one of a group of porphyry-style deposits discovered since 1992 by Newcrest geologists at Cadia 20 kms south of Orange in the central tablelands of New South Wales, Australia. The Ridgeway deposit lies 500m below the surface, 3 kms north-west of the Cadia Hill open cut mine, and was discovered in November 1996. It is notably rich in Au with an inferred and indicated resource of 44 Mt at 2.6 g/t Au and 0.82% Cu, and is under development as an underground mining operation. <...>
Porphyry Cu deposits in the Chilean and Argentinian central Andes occur in a series of orogen-parallel magmatic arcs, which migrated episodically eastward since the Early Cretaceous. The three Cenozoic belts, corresponding to Paleocene-early Eocene, middle Eocene-early Oligocene, and Miocene-early Pliocene epochs, cut obliquely across a composite belt of subeconomic porphyry Cu mineralization formed at several times during the Late Carboniferous to Triassic interval.
Copper belongs to those metals whose concentrations in nature arise from a broad diversity of endogeneous and exogeneous processes, which applies to essentially all genetic classes of ore deposits.
This is the first proceedings volume on copper metallogeny to cover the worldwide distribution of the four main groups of copper deposits, including in Part I: copper-nickel deposits with cobalt and platinum group elements; Part II: copper-molybdenum-gold deposits with silver, zinc, and lead; Part III/IV: copperzinc-lead deposits (with silver etc.).
В монографии обобщены результаты физико-химических исследований процесса кучного выщелачивания меди из окисленных и сульфидных медных руд месторождений Актогай и Айдарлы в условиях, приближенных к геотехнологическим процессам. Представлены результаты опытно-промышленных испытаний, предложенной авторами технологии кучного выщелачивания различных типов медных руд месторождений Актогай и Айдарлы. Книга рассчитана на широкий крут научных и инженернотехнических работников, специализирующихся в области геотехнологических методов добычи полезных ископаемых
In August 1882, the Morgan brothers recognised a mineral deposit, now known as the Mount Morgan Gold-Copper Deposit. The final production figures for the mine were 250 tonnes of gold and 360,000 tonnes of copper from 50 million tonnes of ore, making the average grades 4.99g/t gold and 0.72% copper.
Among the strata-bound ore deposits, the group of sandstone-type, sometimes called red-bed type, forms a complex case of genetic problems related to the detrital1 nature of the ore-bearing facies. The group of the so-called red-bed deposits appears to be homogeneous, even if some transitions are frequent, both towards volcano—sedimentary deposits and towards Kupferschiefer2.
Тектонический контроль, реконструкция и консервация тигелонгнанского месторождения порфиров и эпитермальных отложений меди (Au), Центральный Тибет, Китай
The newly discovered Tiegelongnan Cu (Au) deposit is a giant porphyry deposit overprinted by a high-sulfidation epithermal deposit in the western part of the Bangong–Nujiang metallogenic belt, Duolong district, central Tibet. It is mainly controlled by the tectonic movement of the Bangong–Nujiang Oceanic Plate (post-subduction extension). After the closure of the Bangong–Nujiang Ocean, porphyry intrusions emplaced at around 121 Ma in the Tiegelongnan area, which might be the result of continental crust thickening and the collision of Qiangtang and Lhasa terranes, based on the crustal radiogenic isotopic signature.