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THE MAGMATIC SOURCES OF THE ORE MATERIAL OF PORPHYRY MOLYBDENUM AND PORPHYRY COPPER DEPOSITS
International Geology Review, 1988(1988). THE MAGMATIC SOURCES OF THE ORE MATERIAL OF PORPHYRY MOLYBDENUM AND PORPHYRY COPPER DEPOSITS. International Geology Review: Vol. 30, No. 7, pp. 772-781.
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Hydrothermal alteration in the "porphyry copper" deposits
Economic Geology, 1947The hydrothermal alteration, which was accompanied by the introduction of copper sulphides in the disseminated copper deposits, is considerably more complex than is generally recognized.Detailed microscopic study of selected porphyry specimens from the important deposits in the United States, together with a review of published data, leads to the ...
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By-Products of Porphyry Copper and Molybdenum Deposits
2016Abstract Porphyry Cu and porphyry Mo deposits are large to giant deposits ranging up to >20 and 1.6 Gt of ore, respectively, that supply about 60 and 95% of the world’s copper and molybdenum, as well as significant amounts of gold and silver.
David A. John, Ryan D. Taylor
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Philippine Porphyry and Epithermal Deposits: An Introduction
Economic Geology, 2011The Philippines is one of the most richly endowed parts of the Southwest Pacific, with many porphyry copper-gold and epithermal gold-silver deposits scattered along the archipelago (e.g., Sillitoe and Gappe, 1984; Mitchell and Leach, 1991; Fig. 1). Chinese mining artifacts discovered in the Baguio and Masbate districts suggest that gold and silver ...
Cooke, David R +2 more
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SEG Discovery, 2013
With the publication of this collection of papers on porphyry deposits, SEG offers a signifıcant addition to its popular Compilation series. Introduced in 2007, the series brings together papers on a single theme, collected from the entire archive of Economic Geology and other SEG publications, in a searchable, digital format—on CD-ROM or, as is the ...
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With the publication of this collection of papers on porphyry deposits, SEG offers a signifıcant addition to its popular Compilation series. Introduced in 2007, the series brings together papers on a single theme, collected from the entire archive of Economic Geology and other SEG publications, in a searchable, digital format—on CD-ROM or, as is the ...
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The tops and bottoms of porphyry copper deposits
Economic Geology, 1973Although it is now widely accepted that porphyry copper deposits consist of zonally arranged shells of alteration and mineralization centered on high-level, calc-alkaline stocks, the nature of their uneconomic upward and downward extensions remains undocumented.
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The Genesis of Giant Porphyry Molybdenum Deposits
1993Abstract Giant porphyry molybdenum deposits are best exemplified by the Climax and Henderson deposits in Colorado. The high grades of these deposits are probably inherited from magmatic molybdenum concentrations of about 4 to 5 ppm, which are high for metaluminous rhyolitic magmas that average about 2 ppm molybdenum.
J. D. Keith +2 more
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