J. Bio. Env. Sci.5(6), 329-337, December 2014
Bafq metallogenic province is located in central Iran about 115 Km Southeast of the Yazd city. This metallogenic province is a narrow paleorift extending northward from south of Bafq to Robat- Posht– Badam and suggested age of 750 – 540 Ma for it. There is an alkaline – calc-alkaline bimodal composition at these environments. Contrary, alkaline-sub alkaline bimodal suites occur in anorogenic continental rift settings. The Se–Chahun Iron Ore mine is containing two major groups of ore bodies called the X and XI anomalies. Volcanic rocks are rhyolite and rhyodacite in composition and the sedimentary rocks are mainly dolomite. These ore bodies are commonly associated with pervasively altered rhyolitic tuffs and sandstones. One of the important volcanic rocks in the study area is rhyolite rocks and are host rocks for Iron mineralization These rocks have a Porphyry texture with micro granular mesostasis. phenocrysts of this rock are quartz and plagioclase. Quartzs are anhedral to subhedral shapes and plagioclases are albite to oligoclase. The properties of these minerals can be mention to albite-pericline and albite-carlsbad twinning. These minerals developed to clay mineral, sericite, chlorite and calcite. Rhyolite mesostasis are containing fine grain quartz and microlitic plagioclase that developed to clay minerals. Accessory minerals in these rocks are opac mineral, calcite and chlorite. In the distinguish diagrams, rhyolite rocks are plotted in the calc-alkaline area. Chemical properties of rhyolites are approaching to I-type. Separation of tectonic environment proposed a range of within plate rocks (WPG) and within place volcanic zone for rhyolite rocks.
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.
Barton MD, Johnson DA, 1996. Evaporitic source model for igneous-related Fe oxide- (REE-Cu-Au-U) mineralization. Geology. 24, 259–262.
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.
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. 2005. Geology, geochemistry and evolution of the Esfordi phosphate-iron deposit, Bafq area, Central Iran; Unpublished Ph.D. thesis, University of South Wales, 403p.
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.
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.
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. 1993. ”Saghand formation, a riftogenic unit of precambrian in Central Iran”, Geoscience. 2(6), 32-45. Geological Survay Iran.
Samani B. 1988. Metallogeny of the Precambrian in Iran. Precamb. Res. 39, 85–106.
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.
Torab FM. 2008. Geochemistry and metallogeny of magnetiteapatite deposits of the Bafq Mining District, Central Iran. PhD thesis. Clausthal University of Technology.
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. 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.