##plugins.themes.bootstrap3.article.main##

الهام هاشمیان حمایت جمالی جمشید احمدیان

چکیده

کانسار تپه‌خرگوش در 15 کیلومتری جنوب‌غرب اردستان قرار دارد. رخنمون­‌های سنگی منطقه شامل آندزیت پورفیری، داسیت و ریولیت با سن ائوسن است که در میان آنها توف و ایگنمبریت نیز دیده می­ شود. در شمال محدوده نیز سنگ‌های رسوبی الیگو- میوسن دارای رخنمون هستند. رگه­‌های سیلیسی کانه­ دار در سنگ‌های ائوسن (آندزیت پورفیری، داسیت و توف­ های ریولیتی) تشکیل شده‌اند. دگرسانی‌ها از نوع سریسیتیک، آرژیلیک، پروپلیتیک و سیلیسی هستند. رگه‌های سیلیسی دارای ساخت و بافت­‌های نواری، رگه- رگه‌چه‌ای، برشی و پر‌کننده فضاهای خالی بوده و حاوی کانه­‌های اولیه پیریت، کالکوپیریت، بورنیت، کالکوسیت و طلا هستند. دمای همگن‌شدن میان‌­بارهای سیال از 137 تا 194 درجه سانتی‌گراد و شوری از 4 تا 5/12 درصد معادل وزنی نمک طعام متغیر است. ترکیب سنگ میزبان، نوع کانه­‌ها، ساخت و بافت، ژئومتری، دمای تشکیل، انواع دگرسانی­‌ها و زمین­‌شیمی کانسار، مشابه کانسارهای اپی­ترمال سولفیداسیون پایین است.

جزئیات مقاله

کلمات کلیدی

کانه نگاری, دگرسانی, تپه خرگوش, میان‌ بارهای سیال, ژئوشیمی, اپی‌ ترمال سولفیداسیون پایین, اردستان

مراجع
Aghanabati, A., 2004. Geology of Iran. Geological Survey of Iran Publications, Tehran, 709 pp. (in Persian)
Alikhani, M., Shamanian, Gh.H. and Jafary Zanglanelo, M., 2014. Mineralization and hydrothermal alteration of the vein system of Tajrud, south of Neyshabur. Journal of Economic Geology, 5(2): 325–339. (in Persian)
Barnes, H.L., 1997. Geochemistry of hydrothermal ore deposits. John Wiley and Sons, New York, 992 pp.
Bodnar, R.J., 1993. Revised equation and table for determining the freezing point depression of H2O-NaCl solutions. Geochimica et Cosmochimica Acta, 57(3): 683–684.
Chavez, W.X., 2000. Supergene oxidation of copper deposits: Zoning and distribution of copper oxide minerals. Society of Economic Geologists Newsletter, 41(1): 10–21.
Cisternas, M.E. and Hermosilla, J., 2006. The role of bitumen in strata-bound copper deposit formation in the Copiapo area, Northern Chile. Mineralium Deposita, 41(4): 339–355.
Cooke, D.R., Mcpall, D.C. and Blom, M.S., 1996. Epithermal gold mineralization, Acupan, Baguio District, Philipines, geology, mineralization, alteration and the thermochemical environment of ore deposition. Economic Geology, 91(2): 243–272.
Craig, J.R. and Vaughan, D.J., 1981. Ore microscopy and ore petrography. Wiley Interscience, New York, 417 pp.
Dong, G., Morrison, G. and Jaireth, H., 1995. Quartz texture in epithermal veins, Queensland- classification, Origin, and implication. Economic geology, 90(6): 1841–1856.
Feyzi, M., Ebrahimi, M., Hossein Kouhestani, H. and Mokhtari, M.A.A., 2017. Geology, mineralization and geochemistry of the Aqkand Cu occurrence (north of Zanjan, Tarom-Hashtjin zone). Journal of Economic Geology, 8(2): 507–524. (in Persian with English abstract)
Foster, R.P., 1991. Gold metallogeny and exploration. Springer, London, 431 pp.
Guilbert, J.M. and Park, Ch.F., 1986. The geology of ore deposits. Freeman and company, New York, 985 pp.
Hashemian, E., 2016. The study of alteration, geochemistry, fluid inclusion and genesis of the Tappeh- Khargoosh Cu-Au deposit, southwest Ardestan. M.Sc. thesis, University of Isfahan, Isfahan, Iran, 115 pp.
Hayba, D.O., Bethke, P.M., Heald, P. and Foley, N.K., 1985. Geologic, mineralogic, and geochemical characteristics of volcanic-hosted epithermal precious-metal deposits. In: B.R. Berger and P.M. Bethke (Editors), Geology and Geochemistry of Epithermal Systems. Society of Economic Geologists, Chelsea, pp. 129–166.
Hedenquist, J.W., 1987. Mineralization associated with volcanic-related hydrothermal systems in the circum-Pacific basin. In: M.K., Horn (Editor), Transction of the Fourth Circum-Pacific Energy and Mineral Resources Conference. American Association of Petroleum Geologists, Singapore, pp. 513–524.
Hedenquist, J.W. and Arribas, A., 2017. Epithermal ore deposits: First-order features relevant to exploration and assessment. 14th Conference: Mineral Resources to Discovery. The Society for Geology Applied to Mineral Deposits Biennial Meeting, Quebec, Canada.
Hedenquist, J.W., Arribas, A. and Gonzalez-Urien, E., 2000. Exploration for epithermal gold deposits. Reviews in Economic Geology, 13(7): 221–244.
Huston, D.L. and Large, R.R., 1989. A chemical model for the concentration of gold in volcanogenic massive sulphide deposits. Ore Geology Reviews, 4(3): 171–200.
John, D.A., 2011. Epithermal gold-silver deposits of the Hauraki Goldfield, New Zealand: An Introduction. Economic Geology, 106(6): 915–919.
Kojima, S., Astudillo, J., Trista, D. and Hayashi, K., 2003. Ore mineralogy, fluid inclusion, and stable isotopic characteristics of stratiform copper deposits in the coastal Cordillera of Northern Chile. Mineralium Deposita, 38(1): 208–216.
Kojima, S., Trista-Aguilera, D. and Hayashi, K., 2008. Genetic aspects of the manto-type copper deposits. Resource Geology, 59(1): 87–98.
Lowell, J.D. and Guilbert, J.M., 1970. Lateral and vertical alteration-mineralization zoning in porphyry ore deposits. Economic Geology, 65(4): 373–408.
Maksaev, V. and Zentilli, M., 2002. Chilean Strata-bound Cu-(Ag) Deposits. An Overview: T.M. Porter (Editor), Hydrothermal Iron Oxide Copper-Gold and Related Deposits: A Global Perspective. Porter GeoConsultancy Publishing, Adelaide, pp. 185–205.
Mauk, J.L. and Simpson, M., 2007. Geochemistry and stable isotope composition of altered rocks at the Golden Cross epithermal Au-Ag deposit, New Zealand. Economic Geology, 102(5): 841–871.
Mehvari, R., Shamsipour, R., Bagheri, H., Noghreyan, M. and Mackizadeh M.A., 2010. Mineralogical and fluid inclusion studies in the Kalchueh copper- gold deposit, East of Isfahan. Journal of Economic Geology, 1(1): 47–55. (in Persian with English abstract)
Moncada, D., Mutchler, S., Niebto, A., Reynolds, T.J., Rimstidt, J.D. and Bodnar, R.J. 2012. Mineral textures and fluid inclusion petrography of the epithermal Ag-Au deposits at Guanajuato, Mexico: Application to exploration. Geochemical Exploration, 114(12): 20–35.
Monecke, T., Kempe, U. and Gotze, J., 2002. Genetic significance of the trace element content in metamorphic and hydrothermal quartz: a reconnaissance study. Earth and Planetary Science Letters, 202(3–4): 709–724.
Nadimi, A., 2010. Active Strike- slip faults in the central part of the Sanandaj-Sirjan Zone of Zagros Orogen (Iran). Ph.D. Thesis, University of Warsaw, Warsaw, Poland, 121 pp.
Oliveros, V., Féraud, G., Aguirre, L., Ramírez, L., Fornari, M., Palacios, C. and Parada, M., 2008. Detailed 40Ar/39Ar dating of geologic events associated with the Mantos Blancos copper deposit, northern Chile. Mineralium Deposita, 43(3): 281–293.
Omrani, J., Agard, P., Whitechurch, H., Benoit, M., Prouteau, G. and Jolivet, L., 2008. Arc-magmatism and subduction history beneath the Zagros Mountains, Iran: A new report of adakites and geodynamic consequences. Lithos, 106(3): 380–398.
Pirajno, F., 2009. Hydrothermal processes and mineral systems. Springer, New York, 1273 pp.
Pourkaseb, H., Zarasvandi1, A., Saed, M. and Ali Reza Davoudian Dehkordy, A.R., 2017. Magmatic-hydrothermal fluid evolution of the Dalli porphyry Cu-Au deposit; using Amphibole and Plagioclas mineral chemistry. Journal of Economic Geology, 9(1): 73–92. (in Persian with English abstract)
Radfar, J., 1992. Geological map quadrangle Ardestan, scale 1:100000. Geological Survey of Iran. (in Persian)
Ramdohr, P., 1980. The Ore mineral and their intergrowths. Pergamon, New York, 1205 pp.
Ramirez, L.E., Palacios, C., Townley, B., Parada, M.A., Sial, A.N., Fernandez-Turiel, J.L., Gimeno, D., GarciaValles, M. and Lehmann, B., 2006. The mantos blancos copper deposit: An upper Jurassic breccia-style hydrothermal system in the coastal range of northern Chile. Mineralium Deposita, 41(3): 246–258.
Robb, L., 2005. Introduction to ore- forming processes. Blackwell Publication, Australia. 373 pp.
Rowland, J.V. and Simmons, S.F., 2012. Hydrologic, magmatic, and tectonic controls on hydrothermal flow, Taupo Volcanic Zone, New Zealand: Implications for the formation of epithermal vein deposits. Economic Geology, 107(3): 427–457.
Salehi, M., 2015. Petrology and geochemistry of volcanic rocks, southwest of Ardestan. M.Sc. Thesis, Tarbiat Modarres University, Tehran, Iran, 100 pp.
Sergio Espinoza, R., Hector Veliz, G., Justo Esqivel, L., Jaime Arias, F. and Aldo Mroago, B., 1994. The Cupriferous Province of the costal Range, Northern Chile. Society of Economic Geologists, London, 16 pp.
Shahabpour, J., 2007. Economic Geology. Shahid Bahonar University, Kerman, 536 pp. (in Persian)
Shepherd, T.J., Rankin, A.H. and Alderton, D.H.M., 1985. A practical guide to fluid inclusion studies. Glasgow: Blackie, Chapman and Hall, New York, 239 pp.
Sikka, D.B., Petruk, W., Nehru, C.E. and Zhang, Z., 1991. Geochemistry of secondary copper minerals from Proterozoic porphyry copper deposit, Malanjkhand, India. Ore Geology Reviews, 6(2–3): 257–290.
Sillitoe, R.H. and Hedenquist, J.W., 2003. Linkages between volcanotectonic settings, ore-fluid compositions, and epithermal precious metal deposits. Society of Economic Geologists, Special Publication, 10(1): 315–343.
Simmons, S.F. and Browne, P.R.L., 2000. Hydrothermal minerals and precious metals in the Broadlands-Ohaaki Geothermal System: Implications for understanding low-sulfdation epithermal environments. Economic Geology, 95(5): 971–999.
Simmons, S.F., White, N.C. and John, D.A., 2005. Geological characteristics of epithermal precious and base metal deposits. In: J.W. Hedenquist, J.F.H. Thompson, R.J. Goldfarb and J.P. Richard (Editors), Economic Geology, 100th Anniversary Volume: 1905-2005. Society of Economic Geologists, Littleton, Colorado, pp. 485–522.
Simpson, M., Mauk, J.L. and Simmons, S.F., 2001. Hydrothermal alteration and hydrologic evolution of the Golden Cross epithermal Au-Ag deposit, New- Zealand. Economic Geology, 96(4): 773–796.
Sparkes, G.W., 2012. A prospector’s guide to alteration and epithermal gold mineralization – Examples from Eastern Avalon. Technical Report, Geological Survey Newfoundland and Labrador, Canada, 27 pp.
Tajmir Riahi, Z., Beigi, S., Safaei, H. and Nadimi, A., 2012. Identification active faults and seismic tectonic Shahreza area. 31th Geosciences Conference, Geological survey and mineral explorations, Tehran, Iran. (in Persian)
Tristá-Aguilera, D., Barra, F., Ruiz, J., Morata, D., Talavera-Mendoza, O., Kojima, S. and Ferraris, F., 2006. Re-Os isotope systematics for the Lince–Estefanía deposit: constraints on the timing and source of copper mineralization in a stratabound copper deposit, Coastal Cordillera of Northern Chile. Mineralium Deposita, 41(1): 99–105.
Vahabi Moghadam, B., 1993. Petrographic and petrology metamorphic- magmatic rocks south of Nain. M.Sc. Thesis, University of Tarbiat Moalem, Tehran, Iran, 250 pp.
White, N.C. and Hedenquist, J.W., 1995. Epithermal gold deposits: Styles, characteristics, and exploration. Society of Economic Geologists Newsletter, 23(1): 9–13.
Whitney, D.L. and Evans, B.W., 2010. Abbreviations for names of rock-forming minerals. American Mineralogist, 95(1): 185–187.
Wilkinson, J.J., 2001. Fluid inclusions in hydrothermal ore deposits. Lithos, 55(1–4): 229–272.
Yeganefar, H., 2007. Petrology and Geochemistry of volcanic rocks south Ardestan. M.Sc. Thesis, Tarbiat Modarres University, Tehran, Iran, 118 pp. (in Persian with English abstract)
Yeganefar, H., Ghorbani, M.R., Shinjo, R. and Ghaderi, M., 2013. Magmatic and geodynamic evolution of Urumieh–Dokhtar basic volcanism, Central Iran: major, trace element, isotopic, and geochronologic implications. International Geology Review, 55(6): 767–786.
Yılmaz, H., Oyman, T., Arehart, G.B., Çolakoğlu, A.R. and Billor, Z., 2007. Low-sulfidation type Au-Ag mineralization at Bergama, Izmir, Turkey. Ore Geology Reviews, 32(1–2): 81–124.
Yılmaz, H., Oyman, T., Sönmez, F.N., Arehart, G.B. and Billor, Z., 2010. Intermediate sulfidation epithermal gold-base metal deposits in tertiary subaerial volcanic rocks, Şahinli/Tespih Dere (Lapseki/Western Turkey). Ore Geology Reviews, 37(3–4): 236–258.
ارجاع به مقاله
هاشمیانا., جمالیح., & احمدیانج. (۱۳۹۷-۱۲-۰۲). کانی شناسی، دگرسانی، میان بارهای سیال و زمین شیمی کانسار مس- طلای تپه‌ خرگوش (جنوب غرب اردستان). زمین‌شناسی اقتصادی, 10(2), 299-324. https://doi.org/10.22067/econg.v10i2.62445
نوع مقاله
علمی- پژوهشی