پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 158 |
| تعداد شماره‌ها | 6,240 |
| تعداد مقالات | 67,871 |
| تعداد مشاهده مقاله | 115,461,695 |
| تعداد دریافت فایل اصل مقاله | 90,231,102 |
Metamorphic rock-hosted orogenic gold deposit style at Lakhshak deposit: Their key features and significances for gold exploration in Sistan suture zone | ||
| Geopersia | ||
| مقاله 7، دوره 12، شماره 2، بهمن 2022، صفحه 317-329 اصل مقاله (5.05 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/geope.2022.330120.648632 | ||
| نویسندگان | ||
| Nasim Heydarian Dehkordi1؛ Shojaeddin Niroomand* 2؛ Hoseinali Tajeddin3؛ Reza Nozaem2 | ||
| 1School of Geology, College of Science, University of Tehran, Tehran, Iran and Assistan professor of Academic Center for Education, Culture and Research, Institute of Applied Sciences, ACECR | ||
| 2School of Geology, College of Science, University of Tehran, Tehran, Iran | ||
| 3Department of Geology, Tarbiat Modares University, Tehran, Iran | ||
| چکیده | ||
| This paper focuses on metamorphic rock-hosted gold mineralization in Lakhshak gold-antimony deposit, lies along the southwestern margin of the Sistan suture zone. The area is occupied by metamorphosed Eocene volcano-sedimentary rocks, Oligocene granitoid intrusion, dikes, and quartz veins/veinlets. At Lakhshak, gold-bearing quartz-veins are hosted by the Eocene metamorphic complex. At least two generations of quartz veins are identified in Lakhshak deposit. The first is parallel to the foliation of the host rock, the second crosscuts the first generation of veins as well as the foliation. Gold grades in the first-stage veins are on average higher than that in the second veins. Ore mineral comprises pyrite, stibnite, arsenopyrite, chalcopyrite, pyrrhotite, sphalerite, native gold, and electrum. The mineralized- alteration zone controlled by NE-SW-trending ductile-brittle shear zone. Fluid inclusions in parallel quartz vein types consist of 4 phases including V-rich, L-rich, L-V-rich and L1-L2-V (CO2)-rich phases. Homogenization temperatures and salinities vary from 200 to 330 ºC and 8 to 13 wt. % NaCl eq., respectively. Microthermometric and Laser Raman Spectroscopy studies of fluid inclusions indicate abundant N2, CH4 ± CO2 fluids. Crush-leach analysis of fluid inclusions suggests that the halogen fluid chemistry is not identical to sea water, magmatic or epithermal related fluids, but tends to be similar to fluids in orogenic-type gold deposits. Based on those key features, gold mineralization in Lakhshak deposit tends to meet the characteristics of orogenic, mesothermal types of gold deposit. Metamorphic rock-hosted gold deposits could represent the new targets for gold exploration particularly in Sistan suture zone. | ||
| کلیدواژه‌ها | ||
| Characteristics؛ Orogenic gold؛ Lakhshak deposit؛ Sistan suture zone | ||
| عنوان مقاله [English] | ||
| - | ||
| مراجع | ||
|
Agard, P., Omrani, J., Jolivets L., Whitechurch, H., Vrielynck, B., Spakman, W., 2011. Zagros orogeny: a subduction-dominated process. geology magazine, 148: 692-725.## Aliyari, F., Rastad, E., Goldfarb, R., 2014. Geochemistry of hydrothermal alteration at the Qolqoleh gold deposit, northern Sanandaj-Sirjan metamorphic belt, northwestern Iran: Vectors to the highgrade ore bodies. Journal of Geochemical Exploration, 140: 111-125.## Berberian, M., 2014. Earthquakes and coseismic surface faulting on the Iranian Plateau, A historical, social, and physical approach. Amsterdam. Elsevier, 17: 777-782.## Boomeri, M., 2014. Petrography and geochemistry of intrusive rocks in Shurchah antimony area, southeast of Zahedan. Journal of Petrology, 18: 15-32.## Camp, V.E., Griffis, R.J., 1982. Character, genesis, and tectonic setting of igneous rocks in the Sistan suture zone, Eastern Iran. Lithos, 15: 221-239. Eliaspour, N., Boomeri, M., Bagheri, S., 2010. Study of Economic geology and metallic mineralization in Sefidabeh region of Eastern Iran. M.Sc. Thesis, Sistan and Baluchistan University, Zahedan, Iran.## Goldfarb, R.J., Taylor, R.D., Collins, G.S., Goryachev, N.A., Orlandini, O.F., 2014. Phanerozoic continental growth and gold metallogeny of Asia. Gondwana Research, 25: 48-102.## Groves, D., Goldfarb, R., 2003. Gold deposits in metamorphic belts: Overview of current understanding, outstanding problems, future research, and exploration Significance. Economic Geology, 98: 1-29.## Groves, D., Condie, K.C., Goldfarb, R.J., 2005. Secular changes in global tectonic processes and their influence on the temporal distribution of gold-bearing mineral deposits. Economic Geology, 100: 203-224.## Heidari, S., 2004. Mineralogy, geochemistry, fabrication of gold mineralization in the shear zone of Kervian deposit, M.Sc. Thesis in Economic Geology, Tarbiat Modares University, Tehran, Iran, 168.## Heydarian Dehkordi, N., Niroomand, S., Tajeddin, H., 2021. Geology, mineralogy, alteration, and potential of Lakhshak deposit, the Sistan suture zone based on geophysical studies (IP/RS). Iranian Journal of Geology, 15: 25-39.## Heydarian Dehkordi, N., Niroomand, S., Tajeddin, H.A., Nozaem, R., 2022. Integrated geophysical study of the Lakhshak gold-antimony deposit in the Sistan suture zone, southeastern Iran. Arabian Journal of Geosciences. https://doi.org/10.1007/s12517-022-09628-9.Iran Minerals Production and Supply Company (IMPASCO), 2016. Final report of complementary exploration operation of Lakhshak antimony deposit. Sistan and Baluchistan, Zahedan, Iran, 201. Kavoshgaran Consultant Engineers., 2016. Detail exploration surveys and evaluation of Lakhshak antimony deposit, 83.## Kouhestani, H., Rastad, E., Rashidnejad Omran, N., 2006. Gold mineralization in brittle and ductile shear zones of Chahbagh deposit, Muteh mineral Zone, Sanandaj-Sirjan Zone. Journal of Earth Sciences, 15: 20-32.## Maghsoudi, L., Tajeddin, H., Rastad, E., 2017. Mineralogy and alteration in Hamzeh-Gharanein gold deposit, southwest Saqqez. 24th Symposium of Crystallography and Mineralogy Conference, Iran.## Mojadadi Moghadam, H., Boomeri, M., 2021. Investigation of Sb mineralization and mass transfer in host rocks, Baout, west of Zahedan (southeast of Iran). Journal of Economic Geology, 12: 471-489.## Moradi, R., Boomeri, M., Bagheri, S., 2012. Style and origin of Sb and Au mineralization in Shurchah, southeast of Zahedan. M.Sc. Thesis in Economic Geology. Sistan and Baluchistan University, Zahedan, Iran, 137.## Niroomand, S., 2004. Minerals exploration in geological Naghadeh sheet (1:100000 scale). Internal report, Geological Survey and Mineral Exploration of Iran, Tehran.## Niroomand, S., Moore, F., Goldfarb, R., 2011. The Kharapeh orogenic gold deposit: geological, structural, and geochemical controls on epizonal ore formation in West Azerbaijan province, northwestern Iran. Mineralium Deposita, 46: 409-428.## Niroomand, S., 2018. Gold mineralization in Lakhshak-Sefidabeh. Iran Minerals Production and Supply Company (IMPASCO), 67.## Pitcairn, I., Leventis, N., Beaudoin, G., 2021. A metasedimentary source of gold in Archean orogenic gold deposits. Geological Society of America. https://doi.org/10.1130/G48587.1.## Rastgo Moghadam, G.H., Rashidnejad Omran, N., Mohajjel, M., 2003. Gold mineralization in ductilebrittle Shear zones and fractures of Zartorosht deposit, Sanandaj-Sirjan Zone, Southwest of Sabzevaran. Journal of Earth Sciences, 14: 108-129.## Shafaii Moghadam, H., Stern, R.J., 2015. Ophiolites of Iran: Keys to understanding the tectonic evolution of SW Asia: (II) Mesozoic ophiolites. Journal of Asian Earth Sciences, 100: 31-59. ## Shepherd, T.J., Rankin, A.H., Alderton, D.H.M., 1985. A Practical Guide to Fluid Inclusion Studies. Blackie, Glasgow. 239.## Stampfli, G.M., Raumer, J.F., Borel G.D., 2002. Paleozoic evolution of pre-Variscan terranes: From Gondwana to the Variscan collision. In Catalán, M.; Hatcher, R. D., Jr.; Arenas, R.; et al. Variscan- Appalachian dynamics: The building of the late Paleozoic basement. Boulder, Colorado. Geological Society of America Special Paper, 46: 263-280.## Stern, R.J., Shafaii Moghadam, H., Pirouz, M., 2021. The Geodynamic Evolution of Iran. Annual Review of Earth and Planetary Sciences, 49: 9-36.## Tajeddin, H., Rastad, E., Yaghoubpour, A., 2011. Ore controlling parameters of gold mineralization in the Saqqez-Sardasht metamorphosed area, NW of Sanandaj-Sirjan metamorphic zone. Ph.D. thesis in economic geology, Tarbiat Modares University, Tehran, Iran, 598.## Tirrul, R., Bell, I.R., Griffis, R.J., 1983. The Sistan suture zone of eastern Iran. Geological Society of America Bulletin, 9: 134-150.## Wilkinson, J.J., 2001. Fluid inclusion in hydrothermal ore deposits. Lithos, 55: 229-272.## Zarrinkoub, M.H., Pang, K.N., Chung, S.L., 2012. Zircon U/Pb age and geochemical constraints on the origin of the Birjand ophiolite, Sistan suture zone, eastern Iran. Lithos.https://doi.org/10.1016/j.lithos.2012.08.007.## | ||
|
آمار تعداد مشاهده مقاله: 336 تعداد دریافت فایل اصل مقاله: 770 |
||