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pyrometasomatic

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Journal Article
Journal: Economic Geology
Published: 01 November 1987
Economic Geology (1987) 82 (7): 1723–1731.
...Hirotomo Ueno; Shoji Tonouchi Abstract The hematite and pyrrhotite ores of the Chichibu pyrometasomatic deposits have reversed polarity magnetizations. Among late Miocene igneous bodies a pluton named the quartz diorite C body has a similar magnetization direction and polarity. Integrating...
Journal Article
Journal: Economic Geology
Published: 01 July 1975
Economic Geology (1975) 70 (4): 717–724.
...H. Shimazaki Abstract The regional characteristics of mineralization in Japanese pyrometasomatic deposits were assessed from amounts of metals, especially Cu, Zn, and Pb, dug out from mines during the past 31 years. For the 49 major mines, the ratios Cu/Zn-Pb and the chemical compositions...
Journal Article
Journal: Economic Geology
Published: 01 December 1973
Economic Geology (1973) 68 (8): 1326–1329.
Journal Article
Journal: Economic Geology
Published: 01 June 1966
Economic Geology (1966) 61 (4): 780–784.
Journal Article
Journal: Economic Geology
Published: 01 November 1965
Economic Geology (1965) 60 (7): 1366–1379.
Journal Article
Journal: Economic Geology
Published: 01 March 1958
Economic Geology (1958) 53 (2): 210–214.
...Per Geijer Abstract "Galena is uncommon in pyrometasomatic deposits but does occur in Precambrian sulfide deposits of this type in central Sweden, in what were almost pure carbonate rocks. Associated minerals are in one deposit andradite and fluorite, but mostly magnesium-fluosilicates...
Journal Article
Journal: GSA Bulletin
Published: 01 July 1957
GSA Bulletin (1957) 68 (7): 881–896.
...VICTOR T ALLEN; JOSEPH J FAHEY Abstract Optical properties and chemical analyses are presented for 15 pyroxenes and amphiboles from zinc mines in Mexico and New Mexico. These analyses indicate that the characteristic pyroxenes in the pyrometasomatic zinc deposits examined by the writers in Mexico...
Journal Article
Journal: Economic Geology
Published: 01 January 1952
Economic Geology (1952) 47 (1): 64–83.
.... Much pyrometasomatic silicate is associated with the magnetite iron ore. Epidote, phlogopite, and tremolite comprise the silicate mass, and they are distributed within the cylindrical body as concentric zones which occur from the center outward in the order given. Origin of the collapse structure...
Journal Article
Journal: Economic Geology
Published: 01 November 1935
Economic Geology (1935) 30 (7): 765–782.
Journal Article
Journal: Economic Geology
Published: 01 December 1937
Economic Geology (1937) 32 (8): 987–1008.
...Vincent Cooper Kelley Abstract In recent years the number of deposits that are classed as contact metamorphic has become less and less. Many deposits that have been withdrawn from the contact group are now assigned to the pyrometasomatic class.From early work in the district, Knopf has drawn upon...
Journal Article
Journal: Economic Geology
Published: 01 June 1961
Economic Geology (1961) 56 (4): 695–722.
...Spencer R. Titley Abstract The Linchburg mine, in the Magdalena district, is typical of the pyrometasomatic group of deposits, differing only in its lack of a known intrusive rock to which the pyrometasomatic mineralization can be related. The ore deposit consists principally of sphalerite, galena...
Journal Article
Journal: Economic Geology
Published: 01 September 1959
Economic Geology (1959) 54 (6): 1002–1034.
...John Grover Stone Abstract In the Naica mining district of N-central Mexico, pyrometasomatic and mesothermal replacement bodies of base-metal sulfides with minor amounts of Ag and Au occur in a thick sequence of locally marmorized Cretaceous limestone. The only igneous rocks known in the Sierra de...
Series: Geological Society, London, Special Publications
Published: 09 July 2021
DOI: 10.1144/SP502-2019-75
EISBN: 9781786209900
... Abstract Previous work on the manganese occurrence in the Mankwadzi area, Ghana, suggested that it resulted from localized hydrothermal or pyrometasomatic activity genetically related to dyke formation. This observation means that the Mankwadzi Mn occurrence could be genetically different from...
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Journal Article
Journal: Economic Geology
Published: 01 May 1969
Economic Geology (1969) 64 (3): 255–270.
...David V. Perry Abstract Porphyry copper, pyrometasomatic ore bodies, Paleozoic carbonate formations GeoRef, Copyright 2008, American Geological Institute. 1969 ...
Journal Article
Journal: Economic Geology
Published: 01 September 1969
Economic Geology (1969) 64 (6): 644–666.
...Leonid Bryner Abstract Chromite, massive pyrite, pyrometasomatics, porphyry copper, gold vein, Mesozoic-Tertiary magmatism and tectonism GeoRef, Copyright 2008, American Geological Institute. 1969 ...
Series: Special Publications of the Society of Economic Geologists
Published: 01 January 1996
DOI: 10.5382/SP.04.17
EISBN: 9781629490281
... Abstract Intrusion-related carbonate-hosted (IRCH) Pb-Zn-Ag deposits embrace the “mesothermal silver-lead replacement deposits in limestone” and “pyrometasomatic zinc-lead deposits” of Lindgren. Major (production >1 million tonnes of Pb+Zn) intrusion-related Pb-Zn-Ag districts, including...
Journal Article
Journal: Economic Geology
Published: 01 May 1961
Economic Geology (1961) 56 (3): 592–602.
... Kong granite and middle Jurassic (Repulse Bay) volcanic rocks. The composition and paragenetic sequence of the skarn mineral assemblage is outlined, and it is concluded that the deposit is of contact pyrometasomatic origin and Paleocene to Eocene in age. GeoRef, Copyright 2008, American Geological...
... workers as complex porphyry deposits of the syenite clan, and the Ingerbelle as a skarn deposit gradational to a porphyry. Other workers have placed more emphasis on the characteristics that these deposits have in common with the pyrometasomatic class. ...
Journal Article
Published: 01 December 1953
American Mineralogist (1953) 38 (11-12): 1113–1117.
...Adolph Knopf Abstract The brittle mica clintonite occurs with grossularite, hydrogrossular, vesuvianite, blue spinel, and other minerals in a pyrometasomatically altered limestone xenolith enclosed in granodiorite of the Boulder bathylith south of Helena, Montana. It occurs also at other places...
Journal Article
Published: 01 November 1977
Canadian Journal of Earth Sciences (1977) 14 (11): 2440–2452.
...Karen Stamatelopoulou-Seymour; Wallace H. MacLean Abstract Base metal and gold ores in thin calc-silicate and cordierite gneiss units at Montauban-Les-Mines have historically been described as pyrometasomatic deposits related to granitic intrusions. They are stratigraphically overlain by quartzo...