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Salehi Tinoon M, Abedini A, Calagari A. Investigation of mineralization, REE geochemistry, and fluid inclusions studies of the Shalang vein-type polymetallic ore deposit, southwest of Kerman. www.ijcm.ir 2019; 27 (4) :767-780
URL: http://ijcm.ir/article-1-1362-en.html
URL: http://ijcm.ir/article-1-1362-en.html
1- Urmia University
2- University of Tabriz
2- University of Tabriz
Abstract: (2434 Views)
The Shalang vein-type polymetallic ore deposit is located about 10 km southwest of Kerman and 70 km northeast of Sirjan, and lies in the central part of the Dehaj-Sarduieh metallogenic belt. This deposit is hosted by dacitic and andesitic vitric and crystal tuffs along with andesitic-dacitic lava flows of Eocene age. The alteration zones related to this deposit are propylitic, intermediate argillic, silicic, and carbonatized. Mineralization occurred principally as veins/veinlets in two separate stages, the hypogene (Chalcopyrite, Pyrite, Magnetite) and the supergene (Bornite, Chalcocite, Malachite, Azurite, & Hematite). The hypogene mineralization also took place in two distinct episodes, (1) formation of quartz-sulfide veins/veinlets and (2) development of carbonate-sulfide veins/veinlets. The average concentration values of cu, Pb, Zn, Au, and Ag within the ore-bearing veins/veinlets are 2.5%, 0.26%, 0.16%, 1.3ppm, and 28ppm, respectively. The strong positive anomaly values of Eu (5.03-10.31) and Ce (1.48-5.06) indicate an alkaline pH and reduced nature, respectively for the ore-forming fluids in the depositional environment. The microthermometric studies on fluid inclusions within the cogenetic quartz crystals were carried out. The studied fluid inclusions were chiefly of liquid-rich two-phase type and all of them were homogenized into liquid state. The obtained homogenization temperatures (Th) of the analyzed fluid inclusions varied within the range of 226º-313ºC. The salinities of the studied fluid inclusions range from 3.4wt% to 9.9 wt% NaCl equivalent. Based upon microthermometric results, the boiling concurrent with cooling were two essential mechanisms in development and evolution of this deposit. Presence of colloform, cockad, blabed, and replacement textures in the ores, development of intermediate argillic and carbonatized alteration zones, and the low salinities and temperatures of the studied fluid inclusions provide persuasive evidence that the Shalang vein-type polymetallic ores have the most similarity to the low-sulfidation epithermal deposits.
Keywords: Mineralization, alteration, fluid inclusions, low-sulfidation epithermal, Shalang ore deposit, Dehaj-Sardueih.
References
1. [1] Aftabi A., Atapour H., "Regional aspects of shoshonitic volcanism in Iran", Episodes 23 (2000) 119-125.
2. [2] Ghorbani M., "The economic Geology in Iran: Mineral Deposits and Natural Resources", Springer Science Business Media, Dordrecht (2013) 1-581. [DOI:10.1007/978-94-007-5625-0_1]
3. [3] Salehi M., "Investigation of lithogeochemical haloes in the Chahar-Ghonbad Cu-Au ore deposit, Sirjan", Ms.C. Thesis, University of Shahid Bahonar, Kerman, Iran (2012) 216p (in Persian).
4. [4] Sjerp N., Issakhanian V., Brants A., "The geological environment of the Chahar Gonbad copper mine: A study In Tertiary copper mineralization", Geological survey of Iran, Report 16 (1969) 1-64.
5. [5] Alimohammadi M., Alirezaei S., Ghaderi, M., Kotak, D. J., "Shahabpour J., "The geology, petrogenesis and geological setting of the volcanic and plutonic rocks from Daraloo and Sarmoshk porphyry copper deposits, south Kerman copper belt, Iran", Geosciences 25 (2016) 159-170 (in persian).
6. [6] Khan-Nazer N. H., "Geological map of the Chahar-Ghonbad (1:100000 scale)", Geological Survey of Iran (1994).
7. [7] Fazlnia A., "Petrography and petrology of the Chahar-Ghonbad intrusive masses", Ms.C. Thesis, University of Shahid Bahonar, Kerman, Iran (2000) 180p (in Persian).
8. [8] Atapour H., "Geochemical evolution and metallogeny of potassium rich igneous rocks in the Dehaj-Sarduieh volcano-polutonic belt, Kerman province, with emphasize to special elements", Ph.D. Thesis, University of Shahid Bahonar, Kerman, Iran (2007) 401p (in Persian).
9. [9] Dimitrijevic M. D., "1:100000 geological map of Chahar Gonbad", Geological Survey of Iran (1973).
10. [10] Atapour H., Aftabi A., "Geochemistry and metallogeny of calcalkaline, shoshonitic and adakiic igneous rocks associated with porphyry Cu-Mo and vein type deposits of Dehaj-Sarduieh volcano-plutonic belt, Kerman", Geosciences 18 (2009) 161-172 (in persian).
11. [11] White N. C., Hedenquist J. W., "Epithermal gold deposit styles, characteristics and expoloration", Published in SEG Newsletter 23 (1995) 9-13.
12. [12] Robb L., "Intruduction to ore forming processes", Blackwell publishing (2005) 1-373.
13. [13] Pirajno F., "Hydrothermal processes and mineral systems", Springer (2009) 1-1243. [DOI:10.1007/978-1-4020-8613-7_1]
14. [14] Dong G., Morrison G., Jaireth S., "Quartz textures in epithermal veins, Queensland-Classification, origin, and implication", Economic Geology 90 (1995) 1841-1856. [DOI:10.2113/gsecongeo.90.6.1841]
15. [15] Robert F., Poulen K. H., Dube B., "Gold deposits and their geological classification", Proceeding of exploration 97: Fourth decennial International conference on mineral exploration, (1997) 209-220.
16. [16] Sillitoe S. H. and Hedenquist J. W., "Linkages between volcano-tectonic setting, Ore fluid composition and precious metal deposits", Economic Geology 10 (2003) 315-343.
17. [17] Robert F., Brommecker R., Bourne B. T., Dobak P. J., McEwan C. J., Rowe R. R., Zhou X., "Models and exploration methods for major gold deposit types", Proceedings of Exploration 07: Fifth Decennial International Conference on Mineral Exploration" edited by B. Milkereit (2007) 691-711.
18. [18] Taylor Y., McLennan S. M., "The continental crust: Its composition and evolution", 1st ed. Oxford, UK: Blackwell.
19. [19] Sverjensky D. M., "Europium redox equilibrium in aqueous solutions", Earth and Planetary Science Letters 67 (1984) 70-78. [DOI:10.1016/0012-821X(84)90039-6]
20. [20] Bau M., "Rare earth element mobility during hydrothermal and metamorphic fluid-rock interaction and the significance of the oxidation state of europium", Chemical Geology 93 (1991) 219-230. [DOI:10.1016/0009-2541(91)90115-8]
21. [21] Shapherd T. J., Rankin A. H., Alderton D. H. M., "A practical guide to fluid inclusion studies", Blackie, Glasgow, (1985) 1-239.
22. [22] Bodnar, R. J., "Revised equation and table for determining the freezing point depression of H2O-NaCl soulations", Geochimica et Cosmochimica Acta 57 (1993) 683-684. [DOI:10.1016/0016-7037(93)90378-A]
23. [23] Corbett G., "Epithermal gold for explorationists: AIG", Journal of Applied Geoscientific practice and research in Australian Paper 1 (2002) 1-29.
24. [24] Wilkinson J. J., "Fluid inclusion in hydrothermal ore deposits", Lithos 55 (2001) 229-272. [DOI:10.1016/S0024-4937(00)00047-5]
25. [25] Large R. R., Bull S. W., Cooke D. R., Mc Goldrick P. J., "A Genetic model for the HYC deposit, Australia, based on regional sedimentology, geochemistry and sulfide-sediment relationship", Economic Geology 93 (1998) 1345-1368. [DOI:10.2113/gsecongeo.93.8.1345]
26. [26] Roedder E., Bodnar R. J., "Geologic pressure determinations from fluid inclusions studies", Earth and Planetary Sciences 8 (1980) 263-301. [DOI:10.1146/annurev.ea.08.050180.001403]
27. [27] Haas J. L., "The effect of salinity on the maximum thermal gradient of a hydrothermal system at hydrostatic pressure", Economic Geology 66 (1971) 940-946. [DOI:10.2113/gsecongeo.66.6.940]
28. [28] Bodnar R. J., Lecumberrii Sanchez P., Moncada D., Steele-Maclnnis M., "Fluid inclusion in hydrothermal ore deposits", Treatise on Geochemistry, Second Edition 13 (2014) 119-142 [DOI:10.1016/B978-0-08-095975-7.01105-0]
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