Petrography and geochemistry of metasomatic rocks in Se-Chahun mine, Bafgh, Central Iran
Paper Details
Petrography and geochemistry of metasomatic rocks in Se-Chahun mine, Bafgh, Central Iran
Abstract
Bafgh mineral region is part of the Central Iran micro continent. Host rocks of Se-Chahun mine are mostly under the effect of sodic, sodic-calcic, potassic and low-temperature alterations. Sodic-calcic alteration was wider than sodic and potassic alterations. Host rocks are classified to two grouped on the basis of structural changes: micro crystal metasomatits that mostly are seen with dark gray to green-gray color. Minerals set forming these rocks are similar to other metasomatits with macro crystal structure (actinolite, albite, epidote and magnetite). Main minerals forming macro crystals included actinolite, albite and magnetite; and by going near to mineralization place, magnetite mineral percentage increases. In altered rock of the mine AI and CCPI indexes were 79-20 and 90-19 orderly for low-altered and altered rocks and alteration strength increases from relatively healthy rhyolite rocks to other rocks. Existed amphibole mineral in altered rocks were classified in the range of calcite amphibole with the type of actinolite to ferroactinolite and plagioclases compounds varied from oligoclase to andesine. alkalin samples of feldspar located in the range of 70%-90% of orthoclase.
Bachtiar I. 1973. Petrographische und lagerstattenkunliche untersuchungen des Narigan-granits und seines geoogischen rahmens bei Bafq (Zentral Iran).Unpub.PhD. disse. Aachen. Germany. rheinish-Westtalische Technische Hochschulc.118p.
Barton MD, Johnson DA, 1996. Evaporitic source model for igneous-related Fe oxide- (REE-Cu-Au-U) mineralization. Geology. 24, 259–262.
Bonyadi Z, Davidson GJ, Mehrabi B, Meffre S, Ghazban F. 2010. Significance of apatite REE depletion and monazite inclusions in the brecciated Se-Chahun iron oxide-apatite deposit, Bafq district, Iran: Insights from paragenesis and geochemistry. Chemical Geology. 281, 253-269.
Boynton WV. 1984. Cosmochemistry of the rare earth elements; meteorite studies. In: Rare earth element geochemistry. Henderson, P. (Editors), Elsevier Sci. Publ. Co., Amsterdam. 63-114.
Collins WJ, Beams SD, White AJR, Chappel BW. 1982. Naturer and origin of A-type granites with particular reference to southeastern Australia. Contribotions to Mineralogy and petrology. 80, 180-200.
Daliran F. 2002. Kiruna-type iron oxide-apatite ores and ‘apatites’ of the Bafq district, Iran, with an emphasis on the REE geochemistry of their apatites. In: Porter, T.M. (Ed.), Hydrothermal Iron Oxide Copper gold & Related Deposits: A GlobalPerspective, volume 2. PGC Publishing, Adelaide, Australia. 303– 320.
Darvich- Zade A. 1991. Geology of Iran, 1st pub, Nashr- e . Emrooz.
Feiznia S. 1993. Non-terigenous sedimentary rocks (excluding carbonates). Tehran University Publications. 262 p (In Farsi).
Forster H, Jafarzadeh A. 1994. The Bafq mining district in central Iran – a highly mineralized Infracambrian volcanic field. Economic Geology. 89, 1697–1721.
Haghipour A, Valeh N, Pelissier G, Davoudzadeh, M. 1977. Explanatory text of the Ardekan quadrangle map, 1:250,000, Geological Survey of Iran. H8, 114 p.
Hamdi B. 1995. Precambrian-Cambrian deposits in Iran. Geological Survey of Iran, Tehran, 364 p.
Hitzman MW. 2000. Iron oxide-Cu-Au deposits: what, where, when and why. In: Porter. T.M. (Ed). Hydrothermal iron oxide coppergold and related deposits: A global perspective. Australia Mineral Foundation, Adelaide. 9-25.
Hossein Mirzaei Z, Emami MH, Sheikhzakariaee SJ, Nasr Esfahani AK. 2014. Petrography of plutonic rocks in the late cambrian (rizu series), Se-Chahun iron oxide deposite, Bafq mining district, Central Iran. Journal of Biodiversity and Environmental Sciences (JBES). 5 (4), 610-616.
Irvine TN, Baragar WRA. 1971. A guide to the chemical classification of the common volcanic rocks. Canadian Journal of Earth Sciences. 8, 523–548.
Jami M, Dunlop AC, Cohen DR. 2007. Fluid Inclusion and Stable Isotope Study of the Esfordi Apatite-Magnetite Deposit, Central Iran. Journal of Economic geology. 102, 1111–1128.
Jami M. 2005. Geology, geochemistry and evolution of the Esfordi phosphate-iron deposit, Bafq area, Central Iran; Unpublished Ph.D. thesis, University of South Wales, 403p.
Le Bas MJ, Le Maitre RW, Streckeisen A, Zanettin B. 1986. A chemical classification of volcanic rocks based on the total alkali–silica diagram. Journal of Petrology. 27, 745–750.
Moghtaderi A. 2013. Chadormalu iron oxide deposit, evidence for nonorogenic continental setting at Bafq region, central Iran. Ultra Scientist. 25(2), 193-220.
Momenzadeh M. 1987. Saline deposits and alkaline magmatism, a genetic model. Geological survey of Iran 45, 1385-1495.
Moore F, Modabberi S. 2002. Plate tectonic and geological processes. Kooshamehr Publications, Shiraz, 467p (In Farsi).
NISCO. 1975. “The results of the geological prospecting at the Chador Malu deposit”. Unpubl Rept. National Iranian Steel Corporation. 57 p.
Palacios CM, Hein UF, Dulski P. 1986. Behavior of rare earth elements during hydrothermal alteration at the Buena Esperanza copper–silver deposit, northern Chile: Earth and Planetary Science Letters, 80, 208–216.
Pearce JA, Cann JR. 1983,،Tectonic setting of basic volcanic rocks determined using trace element analyses، Earth Planet Science Letter. 19, 290-300.
Ramazani J, Tucker RD. 2003. The Saghand region, Central Iran: U-Pb geochronology, petrogenesis and implications for Gondwana tectonics; American Journal of Science. 303, 622– 665.
Ramezani J. 1997. Regional geology, geochronology and geochemistry of the igneousand metamorphic rock suites of the Saghand Area, central Iran: Unpublished Ph.D. thesis, St. Louis, Missouri, Washington University. 416 p.
Samani B. 1988. Metallogeny of the Precambrian in Iran. Precamb. Res. 39, 85–106.
Samani B. 1993. ”Saghand formation, a riftogenic unit of precambrian in Central Iran”, Geoscience. 2(6), 32-45. Geological Survay Iran.
Stosch HG, Romer RL, Daliran F, Rhede D. 2011. Uranium–lead ages of apatite from iron oxide ores of the Bafq district, east-Central Iran. Mineralium Deposita. 9–22.
Taylor HP, Forester Rw. 1991. An oxygen isotope study of the Skaergaard intrusion and its country rocks: a description of a 55 Ma old fossil hydrothermal system. Journal of Petrology. 20, 355-419.
Torab FM, Lehmann B. 2007. Magnetite-apatite deposits of the Bafq district, Central Iran: apatite geochemistry and monazite geochronology. journal of Mining. 71, 347–363.
Torab FM. 2008. Geochemistry and metallogeny of magnetiteapatite deposits of the Bafq Mining District, Central Iran. PhD thesis. Clausthal University of Technology.
Torab FM. 2010. Geochemistry and radio-isotope studies on the iron-apatite ores in Bafq metalogenic zone for determination of apatite origin; Iranian Journal of Crystallogrphy Mineral. 18(3), 409–418 (in Persian).
Williams PJ, Barton MD, Fontboté L, de Haller A, Johnson DA, Mark G, Marschik R, Oliver NHS. 2005. Iron-oxide-copper-gold deposits: Geology, space-time distribution, and possible modes of origin. Economic Geology 100th Anniversary Volume. 371–406.
Winchester JA, Floyd PA. 1977. Geochemical discrimination of different magma series and their differentiation products using immobile elements. Chemical Geology. 20, 325–343.
Zahra Hossein Mirzaei Beni, M. H. Emami, S. J. Sheikhzakariaee, A. Nasr Esfahani (2015), Petrography and geochemistry of metasomatic rocks in Se-Chahun mine, Bafgh, Central Iran; JBES, V6, N2, February, P461-471
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