Document Type : Original Research Paper
Authors
1 Department of Geology, Faculty of Earth Sciences, Shahid Beheshti University, Tehran, Iran
2 Department of Geology, Faculty of Basic Sciences, University of Sistan and Baluchistan, Zahedan, Iran
Abstract
The Haji-Abad-Esfandagheh-Faryab ophiolitic belt is one of the most famous chromite-bearing occurrences in the south of Iran that has received considerable attention. Golashkard ultramafic unit includes dunite, highly serpentinized harzburgites, chromitite and wehrlite layers in the Faryab ophiolitic complex located in the southeast of Sanandaj-Sirjan as one of the chromite-bearing areas of the Haji-Abad-Esfandagheh-Faryab ophiolitic belt. Ultramafic rocks and chromitites of Golashkard area consist of 20 to more than 50% of chromite. The studied chromites have variable massive, banded and scattered textures. The geochemistry of Golashkard ultramafic rocks shows that the average Cr# enrichment of chromite in serpentinite rocks (probably dunite and harzburgite) and wehrlite is to Cr/ (Cr + Al) ×100= 70-80 and in chromitite is relatively higher (Cr/ (Cr + Al) ×100= 81). Based on the lithological and mineral chemistry characteristics, Golashkard ultramafic rocks are part of mantle related to ophiolite, which was produced by a homogeneous boninitic melt in the suprasubduction zone and formed high chromium chromitites and related peridotites.
Keywords
- Chromitite
- Chromium-spinel chemistry
- Faryab ultramafic
- Haji-Abad-Esfandagheh-Faryab ophiolitic belt
- Sanandaj-Sirjan zone
Main Subjects
Ahmadipour, H., Sabzehi, M., Whitechurch, H., Rastad, E., and Emami, M. H., 2003. Soghan complex as an evidence for paleospreading center and mantle diapirism in Sanandaj–Sirjan zone (south-east Iran), Journal of Sciences, Islamic Republic of Iran 14, 157–172. https://www.magiran.com/paper/657477.
Ahmed, A.H., and Arai, S., 2002. Unexpectedly high-PGE chromitite from the deeper mantle section of the northern Oman ophiolite and its tectonic implications, Contributions to Mineralogy and Petrology 143, 263–278. https://link.springer.com/article/10.1007/s00410-002-0347-8.
Ahmed, A.H., and Arai, S., 2003. Platinum-group minerals in podiform chromitites of the Oman ophiolite, Can. Mineral. 41, 597–616. https://link.springer.com/article/10.1007/s00710-007-0208-2.
Ahmed, A.H., and Habtoor, A., 2015. Heterogeneously depleted Precambrian lithosphere deduced from mantle peridotites and associated chromitite deposits of Al'Ays ophiolite, Northwestern Arabian Shield, Saudi Arabia. Ore Geol. Rev. 67, 279–296. https://doi.org/10.1016/j.oregeorev.2014.12.018.
Ahmed, A.H., Helmy, H.M., Arai, S., and Yoshikawa, M., 2008. Magmatic unmixing in spinel from late Precambrian concentrically-zoned mafic ultramafic intrusions, Eastern Desert, Egypt. Lithos 104, 85–98. https://doi.org/10.1016/j.lithos.2007.11.009.
Ahmed, A.H., Harbi, H.M., and Habtoor, A.M., 2012. Compositional variations and tectonic settings of podiform chromitites and associated ultramafic rocks of the Neoproterozoic ophiolite at Wadi Al Hwanet, northwestern Saudi Arabia. J. Asian Earth Sci. 56, 118– 134. https://doi.org/10.1016/j.jseaes.2012.05.002.
Arai, S., 1994. Characterization of spinel peridotites by olivine-spinel compositional relationships: Review and interpretation. Chem. Geol. 113, 191–204. https://doi.org/10.1016/0009-2541(94)90066-3.
Arai, S., 1997. Control of wall-rock composition on the formation of podiform chromitites as a result of magma/peridotite interaction. Resour. Geol. 47: 177-187. https://doi.org/10.11456/shigenchishitsu1992.47.177.
Arai, S., Okamura, H., Kadoshima, K., Tanaka, C., Suzuki, S., and Ishimaru, S., 2011. Chemical characteristics of chromian spinel in plutonic rocks: Implications for deep magma processes and discrimination of tectonic setting, Island Arc 20, 125–137. https://doi.org/10.1111/j.1440-1738.2010.00747.
Asadi, S.A.A., Ghasemi, H., Mobasheri, M., 2022. Mineral chemistry of Cr-Spinel in the Sargaz-Abshur ultramafic-mafic intrusion, SE of Iran: An implication to tectonic setting of the intrusion, Scientific Quarterly Journal of Geosciences, V. 32(4). P.103-118. https://doi.org/10.22071/gsj.2022.317848.1960. (In Persian).
Babakhani, A.R., Alavi Tehrani, N., Sabzehei, M., Ohanian, T., and Valeh, N., 1992. Sabzevaran geological map, scale 1/250000, geological survey and mineral exploration of Iran, No. j12. (In Persian).
Barnes, S.J., and Röeder, P.L., 2001. The range of spinel compositions in terrestrial mafic and ultramafic rocks, J. Petrol. 42, 2279–2302. https://doi.org/10.1093/petrology/42.12.2279.
Bonavia, F.F., Diella, V., and Ferrario, A., 1993. Precambrian podiform chromitites from Kenticha hill, southern Ethiopia, Econ, Geol, 88, 198–202. https://doi.org/10.2113/gsecongeo.88.1.198.
Chanideh, F., Ghadami, Gh.R., and Mortazavi, M., 2018. Chemical mineral and petrogenesis Sorkh band Ultramafics of Kahnuj-Roudan Ophiolite belt (Nazdasht area), example of refectory residual alpine peridotite, Iranian Journal of Crystallography and Mineralogy, V. 26, No, 3. https://www.sid.ir/paper/388089/en.
Coleman, R.G., 1977. Ophiolites: ancient oceanic lithosphere. Springer-Verlag, New York, pp. 229. http://dx.doi.org/10.1007/978-3-642-66673-5.
Dare, S.A.S., Pearce, J.A., McDonald, I., and Styles, M.T., 2009. Tectonic discrimination of peridotites using fO2–Cr and Ga–Ti–Fe3+ systematic in chrome spinel. Chem. Geol. 261, 199–216. https://doi.org/10.1016/j.chemgeo.2008.08.002.
Delavari, M., Dolati, A., Marroni, M., Pandolfi, L., and Saccani, E., 2016. Association of MORB and SSZ ophiolites along the shear zone between Coloured Mélange and Bajgan Complexes (North Makran, Iran): evidence from the Sorkhband area. Ofioliti 41, 21 34, https://dx.doi.org/10.4454/ofioliti.v41i1.440.
Dick, H.J.B., and Bullen, T., 1984. Chromian spinel as a petrogenetic indicator in abyssal and alpine type peridotites and spatially associated lavas. Contrib. Mineral. Petrol. 86, 54–76. https://link.springer.com/article/10.1007/BF00373711.
Falloon, T.J., and Danyushevsky, L.V., 2000. Melting of refractory mantle at 1.5, 2, and 2.5 GPa under anhydrous and H2O-undersaturated conditions: Implications for the petrogenesis of high Ca boninites and the influence of subduction components on mantle melting. J. Petrol. 41, 257–283. https://doi.org/10.1093/petrology/41.2.257.
Ghasemi, H., Juteau, T., Bellon, H., Sabzehi, M., Whitechurch, H., and Ricou, L.E., 2002. The mafic-ultramafic complex of Sikhoran (central Iran): a polygenetic ophiolite complex. C. R. Geoscience 334, 431–438. https://doi.org/10.1016/S1631-0713(02)01770-4.
Greenbaum, D., 1977. The chromitiferous rocks of the Troodos ophiolite complex, Cyprus. Economic Geology and the Bulletin of the Society of Economic Geologists”, Nature, 72, 1175-1194. https://doi.org/10.2113/gsecongeo.72.7.1175.
Hassanzadeh, J., and Wernicke, B.P., 2016. The Neotethyan Sanandaj-Sirjan zone of Iran as an arc type for passive margin-arc transitions: Tectonics, v. 35, no. 3, p. 586–621. doi:10.1002/2015TC003926.
Helmy, H.M., El Mahallawi, M.M., 2003. Gabbro Akarem mafic-ultramafic complex, Eastern Desert, Egypt: A late Precambrian analogue of Alaskan-type complexes. Mineral. Petrol.77, 85e108. https://doi.org/10.1007/s00710-001-0185-9.
Irvine, T.N., 1967. Chromian spinel as a petrogenetic indicator: Part 2, Petrologic applications. Can. J. Earth Sci. 4, 71–103. https://doi.org/10.1139/e67-004.
Ishii, T., Robinson, P.T., Maekawa, H., and Fiske, R., 1992. Petrological studies of peridotites from diapiric serpentinite seamounts in the Izu-Ogasawara-Mariana forearc, Leg 125. In: Fryer, P., Pearce, J.A., Stokking, L.B., et al. (Eds.), Proc O.D.P. Sci. Res. 125, pp. 445– 486. https://cir.nii.ac.jp/crid/1573950400241494144.
Ismail, S.K., Arai, S., Ahmed, A.H., and Shimizu, Y., 2009. Chromitite and peridotite from Rayat, northeastern Iraq, as fragments of a Tethyan ophiolite. J. of Island Arc 18, 175– 183. https://doi.org/10.1111/j.1440-1738.2008.00647.
Jannessary, M-R., Melcher, F., Lodziak, J., and Meisel, TH-C., 2012. Review of platinum group element distribution and mineralogy in Chromitite ores from southern Iran, Ore Geology, Reviews, 48, P. 278–305. https://doi.org/10.1016/j.oregeorev.2012.05.001.
Kamenetsky, V., Crawford, A.J., and Meffre, S., 2001. Factors controlling chemistry of magmatic spinel: An empirical study of associated olivine, Cr-spinel and melt inclusions from primitive rocks. J. Petrol. 42, 655–671. https://doi.org/10.1093/petrology/42.4.655.
Le Mee, L., Girardeau, J., and Monnier, C., 2004. Mantle segmentation along the Oman ophiolite fossil mid-ocean ridge. Nature 432, 167–172. https://doi.org/10.1038/nature03075.
Liipo, J., Vuollo, J., Nykänen, V., Piirainen, T., Pekkarinen, L., and Tuokko, I., 1995. Chromites from the Early Proterozoic Outokumpu–Jormua ophiolite belt: a comparison with chromites from Mesozoic ophiolites. Lithos 36, 15–27. https://doi.org/10.1016/0024-4937(95)00002-W.
McCall, G. J. H., 2002. A summary of the geology of the Iranian Makran, Geol. Soc. Sp. Pub., 195, 147–204.
McCall, G., 1985. Explanatory text of the Tahruie quadrangle Map: 1: 250,000, No. J14: Geological Survey of Iran, Tehran.
Miura, M., Arai, S., Ahmed, A.H., Mizukami, T., Okuno, M., and Yamamoto, S., 2012. Podiform chromitite classification revisited: A comparison of discordant and concordant chromitite pods from Wadi Hilti, northern Oman ophiolite. J. Asian Earth Sci. 59, 52–61. https://doi.org/10.1016/j.jseaes.2012.05.008.
Morgan, K.H., Huber, H., McCall, G.J.H., Peterson, L.W., Child, R., Jones, D.R., Simonian, K., and Samimi-Namin, M., 1979. Geological map of Kahnuj, Scale 1:100000, Geological Survey and Mineral Exploration of Iran.
Morgan, K.H., Huber, H., McCall, G.J.H., Samimi-Namin, M., 1980. Geological map of Now-Dez, Scale 1:100000, Geological Survey and Mineral Exploration of Iran.
Naseri-Esfandagheh, A., Rahgoshay, M., Bagheri, B., Monsef, I.,2023. Petrology and Mineral Chemistry of peridotites of the Faryab Ophiolitic Complex, Golashkard region-southeast of Sanandaj-Sirjan zone, Iranian Journal of Crystallography and Mineralogy, V. 31(2). Doi:10.61186/ijcm.31.2.361. (In Persian).
Parkinson, I.J., and Pearce, J.A., 1998. Peridotites of the Izu-Bonin-Mariana forearc (ODP Leg 125) evidence for mantle melting andmelt–mantle interactions in a suprasubduction zone setting. J. Petrol. 39, 1577–1618. https://doi.org/10.1093/petroj/39.9.1577.
Pearce, J.A., Barker, P.F., Edwards, S.J., Parkinson, I.J., and Leat, P.T., 2000. Geochemistry and tectonic significance of peridotites from the South Sandwich arc basin system, south Atlantic. Contrib. Mineral. Petrol. 139, 36–53. https://doi.org/10.1007/s004100050572.
Peighambari. S., Ahmadipour, H., Stosch, H.G., Daliran, F., 2011. Evidence for multi-stage mantle metasomatism at the Dehsheikh peridotite mass if and chromite deposits of the Orzuieh coloured mélange belt, southeastern Iran”, ore geology reviews 39, 245- 264. https://doi.org/10.1016/j.oregeorev.2011.03.004.
Poosti, M., Ghadami, G.H., and Salehi S., 2017. Mineralogy and Petrogenesis of chromian – spinel in Rudan ultramafic body, Hormozgan Province, Iranian Journal of Crystallography and Mineralogy, Vol. 25, No. 1, 149- 166.
Roberts, S., and Neary, C., 1993. Petrogenesis of ophiolitic chromitite. In: Prichard, H.M., Alabaster, T., Harris, N.B.W. and Neary, C.R. (Eds.), Magmatic Processes and Plate Tectonics, Geol. Soc. Spec. Publ.76, 257-272. https://doi.org/10.1144/GSL.SP.1993.076.01.
Roeder, P.L., 1994. Chromite from the Fiery rain of chondrules to the Kilauea iki lava lake. Can. Mineral. 32: 729-746. https://rruff-2.geo.arizona.edu/uploads/CM32_729.
Rollinson, H., 2008. The geochemistry of mantle chromitites from the northern part of the Oman ophiolite: Inferred parental melt compositions. Contrib. Mineral. Petrol. 156, 273– 288. https://doi.org/10.1007/s00410-008-0284-2.
Sabzehei, M., Nazemzadeh Shoaei, M., Eshraghi, S.A., and Roshan Ravan, J., 1994. Mohammad Abad map, 1: 100,000. Geological Survey of Iran. (In Persian).
Saccani, E., Delavari, M., Dolati, A., Marroni, M., Pandolfi, L., Chiari, M., and Barbero E., 2018. New insights into the geodynamics of Neo-Tethys in the Makran area: Evidence from age and petrology of ophiolites from the Coloured Mélange Complex (SE Iran). Gondwana Research 62, 306-327. https://doi.org/10.1016/j.gr.2017.07.013.
Shafaii-Moghadam, H., Mosaddegh, H., Santosh, M., 2013. Geochemistry and petrogenesis of the Late Cretaceous Haji-Abad ophiolite (Outer Zagros Ophiolite Belt, Iran): Implications for geodynamics of the Bitlis–Zagros suture zone, Geological Journal geol. J. 48, 579–602. https://doi.org/10.1002/gj.2458.
Van der Laan, S.R., Arculus, R.J., Pearce, J.A., and Murton, J.B., 1992. Petrography, mineral chemistry, and phase relations of the basement boninite series of Site 786, Izu– Bonin forearc. In: Fryer, P., Pearce, J.A., Stokking, L.B. (Eds.), Proceedings of the Ocean 39 Drilling Program, Scientific Results, vol. 125. Ocean Drilling Program, College station, TX, pp. 171–202. https://www.researchgate.net/profile/Julian-Pearce/publication/262104091.
Van der Veen, A.H., and Maaskant, P., 1995. Chromian spinel mineralogy of the Staré Ransko gabbro-peridotite, Czech Republic, and its implications for sulfide mineralization. Miner. Deposita. 30, 397–407. https://doi.org/10.1007/BF00202282.
Zhou, M. F., Sun, M., Keays, R.R., and Kerrich, R.W., 1998. Controls on PGE distributions of podiform chromitites: A case study of high- Cr and high- Al chromitites from Chinese orogenic belts, Geochimica et Cosmochimica Acta, Acta 62, 677-688. https://doi.org/10.1016/S0016-7037(97)00382-7.
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