Kuh-e Dom Fe–Cu–Au prospect, Anarak Metallogenic Complex, Central Iran: a geological, mineralogical and fluid inclusion study
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- 作者：Ebrahim Tale Fazel ; Behzad Mehrabi ; Amir Ali Tabbakh Shabani
- 刊名：Mineralogy and Petrology
- 出版年：2015
- 出版时间：February 2015
- 年：2015
- 卷：109
- 期：1
- 页码：115-141
- 全文大小：4,376 KB
- 参考文献：1. Agard P, Jolivet L, Vrielynck B, Burov E, Monie P (2007) Plate acceleration: the obduction trigger? Earth Planet Sci Lett 258:428-41 CrossRef
2. Alavi M (2004) Regional stratigraphy of the Zagros fold-thrust belt of Iran and its proforeland evolution. Am J Sci 304:1-0 CrossRef
3. Asadi HH, Voncken JHL, Kühnel RA, Hale M (2000) Petrography, mineralogy and geochemistry of the Zarshouran Carlin-like gold deposit, northwest Iran. Miner Deposita 35:656-71 CrossRef
4. Bakker RJ (2003) Package FLUIDS 1. Computer programs for analysis of fluid inclusion data and for modeling bulk fluid properties. Chem Geol 194:3-3 CrossRef
5. Bakker RJ, Baumgartner M, Doppler G (2012) Diffusion of water through quartz: a fluid inclusion study. Goldschmidt 2012, Abstracts
6. Barton MD, Johnson DA (1996) Evaporitic source model for igneous-related Fe oxide-REE–Cu–Au–U) mineralization. Geololgy 24:259-62 CrossRef
7. Barton MD, Johnson DA (2000) Alternative brine sources for Fe–oxide (?Cu–Au) systems: implications for hydrothermal alteration and metals. In: Porter TM (ed) Hydrothermal iron oxide copper gold & related deposits: a global perspective. Australian Mineral Foundation, Adelaide, pp 43-0
8. Berberian F, Muir ID, Pankhurst RJ, Berberian M (1982) Late Cretaceous and early Miocene Andean-type plutonic activity in northern Makran and central Iran. J Geol Soc Lond 139:605-14 CrossRef
9. Bodnar RJ (1993) Revised equation and table for determining the freezing point depression of H2O-NaCl solutions. Geochim Cosmochim Acta 57:683-84 CrossRef
10. Brown PE (1989) Flincor: a microcomputer program for the reduction and investigation of fluid inclusion data. Am Mineral 74:1390-393
11. Bowers TS, Helgeson HC (1983) Calculation of the thermodynamic and geochemical consequences of nonideal mixing in the system H2O–CO2–NaCl on phase relations in geological systems: equation of state for H2O–CO2–NaCl fluids at high pressures and temperatures. Geochim Cosmochim Acta 47:1247-275 CrossRef
12. Carmichael ISE, Lange RA, Luhr JF (1996) Quaternary minettes and associated volcanic rocks of Mascota, western Mexico: a consequence of plate extension above a subduction modified mantle wedge. Contrib Mineral Petrol 124:302-33 CrossRef
13. Cline JS, Bodnar RJ (1994) Experimental Determination of the PVTX properties of 30 wt% NaCl–H2O using synthetic fluid inclusions. PACROFI V, Pan-American Conference on Research on Fluid Inclusions, Instituto de Investigaciones Eléctricas. Departamento de Geotermia, Cuernavaca, Morelos, Mexico, 12 p
14. Condie KC (1989) Geochemical changes in basalts and andesites across the Archean–Proterozoic boundary: identification and significance. Lithos 23:1-8 CrossRef
15. Daliran F (2008) The carbonate rock-hosted epithermal gold deposit of Agdarreh, Takab geothermal field, NW Iran—hydrothermal alteration and mineralization. Miner Deposita 43:383-04 CrossRef
16. Darling RS (1991) An extended equation to calculate NaCl contents from final clathrate melting temperatures in H2O–CO2–NaCl fluid inclusions: implications for P–T isochore location. Geochim Cosmochim Acta 55:3869-871 CrossRef
17. Dercourt J, Zonenshain L, Ricou LE, Kazm - 刊物类别：Earth and Environmental Science
- 刊物主题：Earth sciences
Mineralogy
Geochemistry - 出版者：Springer Wien
- ISSN：1438-1168
文摘
The Kuh-e Dom Fe–Cu–Au prospect is located in the Urumieh-Dokhtar Magmatic Belt, and is characterized by copper–iron oxide and gold veins, stockworks and breccias hosted by the Eocene Kuh-e Dom arc intrusion. Mineralization is located within NE–SW to WNW–ESE sinistral faults and likely formed in a subduction-related continental margin that is typical of IOCG deposit systems. The deposits have a distinct metal composition of Fe, Cu, Bi, Co, Mo and LREE with gold (up to 3?g/t), and the mineral assemblages are quartz, hematite, pyrite, chalcopyrite, emplectite, magnetite, free gold, calcite, barite, chlorite, and tourmaline. Three paragenetic stages of mineralized quartz veins are distinguished in the Kuh-e Dom prospect, including: (i) hematite-bearing quartz veins, (ii) quartz-sulfide stockwork and breccia veins, and (iii) quartz-calcite±sulfide infilling veins. Sodic (albitization), potassic, and quartz–calcite±chlorite pervasive alterations are commonly associated with these three mineralization stages. Three types of fluid inclusions have been identified at Kuh-e Dom, including: aqueous two-phase (H2O?NaCl?CaCl2±FeCl2), halite-saturated aqueous (H2O?NaCl±KCl), and CO2-bearing (H2O–CO2±CH4 and CO2±CH4) fluid inclusions. A hypersaline (~35?wt% NaCl equiv.), aqueous magmatic fluid was released at about 400?°C and a pressure of nearly 4?kbar, forming early hematite-bearing quartz veins. These high salinity fluids were progressively diluted further away from Kuh-e Dom intrusion due to substantial input of meteoric water and mixing with the magmatic components during the middle and late stages of mineralization. The mineralogy, alteration, and fluid composition of the Kuh-e Dom Fe–Cu–Au prospect compared well with Fe oxide Cu–Au (IOCG) deposits worldwide.