Geochemistry and Fuid-Inclusion Microthermometry of the Farsesh Barite Deposit, Iran

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The Permian carbonate-hosted Farsesh barite deposit is located southeast of the City of Aligudarz in the province of Lorestan, Iran. Structurally, this deposit lies in the Zagros metallogenic belt and the Sanandaj-Sirjan Zone. Barite mineralisations occur as open-space flling veins, and as massive and replacement ores along fractures, faults and shear zones of the Permian carbonate host rocks. In order to determine the structure, in addition to pe-trographic and fuid-inclusions studies, an ICP-MS analysis was carried out in order to measure the major as well as the trace and rare earth elements. The Farsesh barite deposit has a simple mineralogy, of which barite is the main mineral, followed by calcite, dolomite, quartz, and opaque minerals such as Fe-oxides. Replacement of bar-ite by calcite is common and is more frequent than space-flling mineralisation. Sulphide minerals are minor and mainly consist of chalcopyrite and pyrite, which are altered by weathering to covellite, malachite and azurite. Petrographic analysis and micro-thermometry were carried out on the two-phase liquid/vapour inclusions in ellipsoidal or irregularly shaped minerals ranging in size from 5–10 µm. The measurements were conducted on fuid inclusions during the heating and subsequent homogenisation in the liquid phase. The low homogenisation temperatures (200–125°C) and low to moderate salinity (4.2–20 eq wt% NaCl) indicate that the barite had precipitated from hydrothermal basinal water with low to moderate salinity. It appears from the major and trace elements that geochemical features such as Ba and Sr enrichment in the barite samples was accompanied by depletion of Pb, Zn, Hg, Cu and Sb. The geochemistry of the rare earth elements, such as low σREE concentrations, LREE-enrichment chondrite-normalised REE patterns, the negative Ce and positive Eu anomalies, the low Ce/La ratio and the positive La and Gd anomalies, suggest that the Farsesh barite was deposited from hydrothermally infuenced sea water. The Farsesh deposit contains low-temperature hydrothermal barite. The scatter plots of the barite (close to sea water) in different areas on the CeN/SmN versus CeN/YbN diagram support the possibility that the barite was formed from seawater-bearing hydrothermal fuids.

Alavi, M., 1994. Tectonics of the Zagros orogenic belt of Iran: new data and interpretations. Tectonophysics 229, 211–238.

Alavi, M., 2004. Regional stratigraphy of the Zagros fold-thrust belt of Iran and its proforeland evolution. American Journal of Science 304, 1–20.

Alexander, B.W., Bau, M., Andersson, P. & Dulski, P., 2008. Continentally derived solutes in shallow Ar-chean seawater: rare earth element and Nd isotope evidence in iron formation from the 2.9 Ga Pongola Supergroup, South Africa. Geochimica et Cosmochimica Acta 72, 378–394.

Aliyari, F., Rastad, E. & Mohajjel, M., 2012. Gold deposits in the Sanandaj-Sirjan zone: orogenic gold deposits or intrusion-related gold systems? Resource Geology 62, 296–315.

Barrett, T.J., Jarvis, I. & Jarvys, K.E., 1990. Rare earth element geochemistry of massive sulfdes-sulfates and gossans on the Southern Explorer Ridge. Geology 18, 583–586.

Bodnar, R.J., 1999. Hydrothermal solutions. [In:] C.P. Marshall & R.W. Fairbridge (Eds): Encyclopedia of geochemistry. Kluwer Academic Publishers, Lancaster, 333–337.

Bodnar, R.J. & Vityk, M.O., 1994. Interpretation of micro thermometric data for H2O – NaCl fuid inclusions. [In:] B. De Vivo & M.L. Frezzotti (Eds): Fluid inclusions in minerals – methods and applications. Virginia Tech, Blacksburg, 117–130.

Bozkaya, G. & Gökce, A., 2004. Trace- and rare-earth elements geochemistry of the Karalar (Gaipasa-Antalya) barite-galena deposits, Southern Turkey. Turkish Journal of Earth Sciences 13, 63–75.

Burton, J.D., Culkin, F. & Riley, J.P., 1959. The abundances of gallium and germanium in terrestrial materials. Geochimica et Cosmochimica Acta 16, 151–180.

Chen, D., Qing, H., Yan, X. & Li, H., 2006. Hydrothermal venting and basin evolution (Devonian, South China): constraints from rare earth element geochemistry of chert. Sedimentary Geology 183, 203–216.

Clark, H.B, Poole, F.G. & Wang, Z., 2004. Comparison of some sediment hosted, stratiform barite deposits in China, the United States, and India. Ore Geology Reviews 24, 85–101.

Darvishi, E., 2011. Petrology of volcanic rocks in South Azna. [In:] The International Conference on Geology, Ge-otechnology and Mineral Resources of Indochina (GEOIN-DO 2011, Khon Kaen, Thailand, Theme 1: Geology & mineral resources), 16–21.

Ehya, F., 2012. Rare earth element and stable isotope (O, S) geochemistry of barite from the Bijgan deposit, Markazi Province, Iran. Mineralogy and Petrology 104, 81–93.

Ghasemi, A. & Talbot, C.J., 2006. A new tectonic scenario for the Sanandaj-Sirjan zone (Iran). Journal of Asian Earth Sciences 26, 683–693.

Ghorbani, M., 2002. An introduction to economic geology of Iran. National Geoscience database of Iran (Tehran), 695 pp. (in Farsi).

Gökce, A. & Bozkaya, G., 2008. Fluid inclusion and stable isotope characteristics of Karalar (Gaipasa-Antalya) barite-galena deposits, Southern Turkey. Geology of Ore Deposits 50, 145–154.

Griessmann, M., Mumm, A.S., Seifert, T. & Conor, C., 2010. The Mt. Mulga barite magnetite copper gold mineralisation, Olary Domain, South Australia. Jour nal of Geochemical Exploration 106, 110–120.

Griffth, E.M. & Paytan, A., 2012. Barite in the ocean-occurrence, geochemistry, and palaeoceanographic applications. Sedimentology 59, 1817–1835.

Guichard, F., Church, T.M., Treuil, M. & Jaffrezic, H., 1979. Rare earths elements in barites: distribution and effects on aqueous partitioning. Geochimica et Cosmo-chimica Acta 49, 983–997.

Hein, J.R., Zierenberg, R.A., Maynard, J.B. & Hanning-ton, M.D., 2007. Barite-forming environments along a rifted continental margin, southern California borderland. Deep Sea Research part II: Tropical Studies in Oceanography 54, 1327–1349.

Jébrak, M., El Wartiti, M., Marcoux, E. & Zaharoui, M., 2011. The Bouznika Cambrian barite deposit (Moroc co), an early mineralization on the Iapetus margin. Journal of African Earth Sciences 60, 53–62.

Jewell, P.W & Stallard, R.F., 1991. Geochemistry and pale-oceanographic setting of central Nevada bedded bar-ites. Journal of Geology 99, 151–170.

Jurković, I., Garašić, V. & Hrvatović, H., 2010. Geochem-ical characteristics of barite occurrences in the Palaeozoic complex of south-eastern Bosnia and their relationship to the barite deposits of the mid-Bosnian Schist Mountain. Geologia Croatica 63, 241–258.

Jurković, I.B., Garašić, V. & Jurković, I.M., 2011. Geo-chemical characteristics of mercurian, tetrahedrite, barite and fuorite from the Duboki Vagan, Glumac and Dubrave-Dugi Dol barite deposits, south of Kresevo, mid-Bosnian Schist Mts. Geologia Croatica 64, 49–59.

Kato, Y. & Nakamura, K., 2003. Origin and global tectonic signifcance of early Archean cherts from the Marble Bar greenstone belt, Pilbara Craton, Western Australia. Precambrian Research 125, 191–243.

Kelley, K., Dumoulin, J.A. & Jennings, S., 2004. The Anar-raaq Zn-Pb-Ag and barite deposit, northern Alaska: evidence for replacement of carbonate by barite and sulfdes. Economic Geology 99, 1577–1591.

Kesler, S.E., 2005. Ore-forming fuids. Elements 1, 13–18.

Levinson, A.A., 1974. Introduction to exploration geochemistry. Applied Publishing Ltd., Calgary, 612 pp.

Lottermoser, B.G. & Ashley, P.M., 1996. Geochemistry and exploration signifcance of ironstones and bar-ite-rich rocks in the Proterozoic Willyama Supergroup, Olary Block, South Australia. Journal of Geo-chemical Exploration 57, 57–73.

McDonough, W.F. & Sun, S.S., 1995. The composition of the earth. Chemical Geology 120, 223–253.

Mohajjel, M., Fergusson, C.L. & Sahandi, M.R., 2003. Cretaceous-Tertiary convergence and continental collision, Sanandaj-Sirjan Zone, Western Iran. Journal of Structural Asian Earth Sciences 21, 397–412.

Molinaro, M., Leturmy, P., Guezou, J.C., de Lamotte, D.F. & Eshraghi, S.A., 2005. The structure and kinematics of the southeastern Zagros fold-thrust belt, Iran: from thin-skinned to thick-skinned tectonics. Tectonics 24, 1–19.

Murray, R.W., 1994. Chemical criteria to identify the dep-ositional environment of chert: general principles and applications. Sedimentary Geology 90, 213–232.

Murray, RW., Buchholtz ten Brink, M.R., Jones, D.L., Ger-lach, D.C. & Russ III, G.P., 1990. Rare earth elements as indicators of different marine depositional environments in chert and shale. Geology 18, 268–271.

Noguchi, T., Shinjo, R., Ito, M., Takada, J. & Oomori, T., 2011. Barite geochemistry from hydrothermal chimneys of the Okinawa Trough: insight into chimney formation and fuid/sediment interaction. Journal of Mineralogical and Petrological Sciences 106, 26–35.

Safaei, H., 2009. The continuation of the Kazerun fault system across the Sanandaj–Sirjan Zone (Iran). Journal of Asian Earth Sciences 35, 391–400.

Soheili, M., Jafarian, M.B. & Abdullah, M.R., 1992. Geological map of the Aligudarz area 1:100 000. Geological Survey of Iran, Tehran.

Shepherd, T.J., Ranbin, A.H. & Alderton, D.H.M., 1985. A practical guide to fuid inclusion studies. Blackie, Glasgow, 239 pp.

Torres, M.E., Bohrman, G., Dube, T.E. & Poole, F.G., 2003. Formation of modern and Paleozoic stratiform barite at cold methane seeps on continental margins. Geology 31, 897–900.

Ulrich, M.R. & Bodnar, R.J., 1988. Systematics of stretching of fuid inclusions II: barite at 1 atm confning pressure. Economic Geology 83, 1037–1046.

Yeganeh, B.Y., Feiznia, S. & van Loon, A.J., 2012. Sedimentary environment and palaeogeography of the Palaeocene-Middle Eocene Kashkan Formation, Za-gros fold-thrust belt, SW Iran. Geologos 18, 13–36.

Zarasvandi, A.R., Charchi, A., Carranza E.J.M. & Al-izadeh, B., 2008. Karst bauxite deposit in the Zagros mountain belt, Iran. Ore Geology Reviews 32, 521–532.


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