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2000
Abstract Gold-rich porphyry deposits worldwide conform well to a generalized descriptive model. This model incorporates six main facies of hydrothermal alteration and mineralization, which are zoned upward and outward with respect to composite porphyry stocks of cylindrical form atop much larger parent plutons.
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Abstract Gold-rich porphyry deposits worldwide conform well to a generalized descriptive model. This model incorporates six main facies of hydrothermal alteration and mineralization, which are zoned upward and outward with respect to composite porphyry stocks of cylindrical form atop much larger parent plutons.
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The Sar Cheshmeh porphyry copper deposit
Economic Geology, 1975The Sar Cheshmeh porphyry copper, located in southern Iran, was mined in ancient times, "rediscovered" about 1966, explored during 1966-1969, and will be in full production in 1977 at a rate of 40,000 tons of ore per day. Mineralization is associated with a late Tertiary granodiorite porphyry stock, cut by a series of genetically related intramineral ...
G. C. Waterman, R. L. Hamilton
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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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Preface: Porphyry deposits in the Eurasian continent
Journal of Asian Earth Sciences, 2014Compared to the porphyry deposit systems in North and South America, and the Southwest Pacific Islands, the porphyry deposits in the Eurasian continent are much less known. The porphyry systems in the Eurasian continent are distributed throughout a large span of geological history, from the Mesoproterozoic to the Cenozoic. In the Phanerozoic, there are
Jingwen Mao +3 more
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Marcopper porphyry copper deposit, Philippines
Economic Geology, 1976Marcopper porphyry copper deposit is located in the Philippines near the center of the island of Marinduque, 180 km south of Manila. The island9s tectonic history is dominated by northwesterly trending elements of the Philippine mobile belt. Mineralization is related to differentiated intermediate intrusives which occupy the core of a northwesterly ...
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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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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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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 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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