کانه‌زایی، کانی‌شناسی، ساخت و بافت کانسار سرب-روی-مس رسوبی چرلانقوش، شمال شرق ماهنشان

جمالی‌پور, سکینه; ابراهیمی, محمد; نباتیان, قاسم; هنرمند, مریم

doi:10.22128/ijcm.2025.2970.0

کانه‌زایی، کانی‌شناسی، ساخت و بافت کانسار سرب-روی-مس رسوبی چرلانقوش، شمال شرق ماهنشان

نوع مقاله : مقاله پژوهشی

نویسندگان

¹ دانشگاه زنجان

² دانشگاه تحصیلات تکمیلی

10.22128/ijcm.2025.2970.0

چکیده

کانسار سرب-روی-مس چرلانقوش در شمال شرق ماهنشان و در گوشه شمال غربی پهنه ایران مرکزی واقع است. واحدهای سنگی موجود در این منطقه وابسته به سنوزوییک و شامل سازند قرمز پیشین، سازند قم، سازند قرمز پسین و نهشتههای کواترنری هستند. در منطقه مورد بررسی، سازند قرمز پسین که میزبان کانهزایی است دارای گسترش زیادی بوده و شامل تناوبی از مارن، لایسنگ، ماسهسنگ‌‌های اکسایشی قرمز رنگ و ماسهسنگ‌‌های احیایی خاکستری روشن است. کانه‌زایی سرب-روی-مس در بخش‌های دارای مواد آلی درون ماسهسنگ‌های خاکستری پهنه شستهشده رخ داده است. در کانسار سرب-روی-مس چرلانقوش، دو افق کانهزایی وجود د ارد و هر یک از آن دارای سه پهنه شامل پهنه کانهزایی، پهنه شسته شده و پهنه قرمز اکسایشی هستند. بافت‌های دیده شده در این کانهزایی شامل بافتهای جانشینی، دانهپراکنده، شبه‌لامینهای، عدسیشکل و سیمان بین‌دانه‌ای هستند. سنگ میزبان در این کانسار، ماسهسنگ و کانه‌های اولیه شامل گالن، اسفالریت، پیریت، کالکوسیت اولیه و کالکوپیریت و کانی‌های ثانویه کالکوسیت ثانویه، کولین، مالاکیت، آزوریت، گوتیت و لپیدوکروزیت هستند. ویژگی‌های این کانه‌زایی از نظر ساخت و بافت، سنگ میزبان، کانه‌ها، چینهشناسی و عوامل کنترل کننده کانهزایی (مواد آلی گیاهی و به مقدار کمتر پیریت به عنوان عامل اصلی احیا کننده محیط و همچنین نفوذپذیری بالا در سنگ میزبان) شبیه کانسارهای مس رسوبی نوع لایههای قرمز هستند.

کلیدواژه‌ها

عنوان مقاله [English]

Ø³Ø§Ø²ÙØ¯ ÙØ±ÙØ² Ø¨Ø§ÙØ§ÛÛØ Ø³Ø§Ø®Øª Ù Ø¨Ø§ÙØªØ Ú©Ø§ÙÙâØ²Ø§ÛÛ Ø³Ø±Ø¨-Ø±ÙÛ-ÙØ³ Ø±Ø³ÙØ¨Û ÙÙØ¹ red-bed Ø Asael, D., Matthews, A., Bar-Matthews, M. & Halicz, L., 2007- Copper isotope fractionation in sedimentary copper mineralization, Timna Valley, Israel. Chemical Geology 243: 238â254. Avila-Salinas, W., 1990- Origin

نویسندگان [English]

sekineh Jamalipur ¹
Maryam Honarmand ²

¹ University of Zanjan

² University for Basic studies

چکیده [English]

The Cherlanghush Pb-Zn-Cu deposit is located in northeast of Mahneshan and the northwest corner of Central Iran. Rock units exposed in this area belong to the Cenozoic era including Lower Red Formation, Qom Formation, Upper Red Formation and Quaternary deposits. The Upper Red Formation which is the host for the mineralization is widely exposed in the study area and consists of alternation of marl, siltstone, oxidized red sandstone and light gray sandstone. The Pb-Zn-Cu mineralization has occurred within the gray sandstones of bleached zone containing organic materials. In Cherlanghush, Pb-Zn-Cu ore deposit the mineralization has happen in two horizons. Each horizon is composed of three zones including mineralized zone, bleached zone and oxidized red zone. The observed textures in the Cherlanghush ore deposit are replacement texture, disseminated texture, solution seams texture, lens-like texture and inter particle cement texture. The host rocks in the study ore deposit are gray sandstone beds and the primary ore minerals are galena, sphalerite, pyrite, primary chalcocite and chalcopyrite accompanied with secondary ore minerals such as primary chalcocite, covellite, malachite, azurite, geothite and lepidocrocite. The characteristics of the study ore deposit such as texture and structure, host rock, ore minerals, stratigraphy, and factors controlling the mineralization (presence of organic materials and minor amount of pyrite performing as reductant and also high permeability in the host rock) are most similar to the red-bed type sedimentary Cu deposits.

کلیدواژه‌ها [English]

Upper Red Formation
red-bed type sedimentary Pb-Zn-Cu deposits
Cherlanghush
Mahneshan

مراجع

[1] Hitzman M. W., Selly D., Bull S., "Formation of sedimentary rock hosted stratiform copper deposits through earth history", Economic Geology, 105 (2010) 627–639.

[2] Ebrahimi M., Musavimotlagh H., "A study of Halab sedimentary Cu deposit, southwest of Zanjan", 4^th national conference of the Iranian Economic Geology Association. (2012) 358–363.

[3] Bikdeli Z., "Mineralogy and geochemistry of the host rock and ore body in the Cherlanghush area, sedimentary Cu deposit, northeast of Mahneshan", MSc thesis, (1393) 107 p.

[4] Bikdeli Z., Ebrahimi M., Nabatian Gh., Mokhtari M.A.A., "Mineralogy, structure and texture of the Chehrabad sedimentary Cu deposit, northwest of Zanjan", 21^th national conference of the Iranian Crystallography and Mineralogy Association. (2013) 1–7.

[5] Bikdeli Z., Ebrahimi M., Nabatian Gh., Mokhtari M.A.A., "Mineralization, mineralogy, structure and texture of the Chehrabad sedimentary Cu deposit, northwest of Zanjan", The quarterly Geology Journal, The Geological Survey and Mineral Exploration of Iran, 24(96) (2015) 249–262.

[6] Ebrahimi M., Nabatian Gh., Khodaii M., "Mineralography of the Ghuii sedimentary Cu deposit (southwest of Gheidar), Zanjan providence", 15^th national conference of the Iranian Economic Geology Association. (2012) 1–7.

[7] Haghighi A. S., "Geology, Mineralogy, geochemistry and genesis of the Ortasu Pb-Zn deposit, northwest of Zanjan", M.S. thesis, (2016) 140 p.

[8] Ebrahimi M., Goli M., Esmaeili R., Nematollahi M.J., Taghilu B., Veisinia A., "Gharabuteh sedimentary Pb deposit, northwest of Zanjan", 26^th national conference of the Iranian Crystallography and Mineralogy Association. (2018) 608–613.

[9] Jamalipur S., "Mineralogy and geochemistry of the host rock and ore body in the Chehrabad sedimentary Cu deposit, northeast of Mahneshan", MSc thesis, (2015) 118 p.

[10] Lotfi M., "1:100000 geologic map of Mahneshan", The Geological Survey and Mineral Exploration of Iran, (2001).

[11] Aghazadeh M., Badrzadeh Z., "Introducing horizons of the sedimentary Cu deposit in Iran", 29^th Earth Science Conference, The Geological Survey and Mineral Exploration of Iran, (2010) 1–8.

[12] Aghanabati A., "Geology of Iran", The Geological Survey and Mineral Exploration of Iran. 586 p.

[13] Kretz R., "Symbols for rock-forming minerals", American mineralogist, Vol: 68 (1983) p: 277-279.

[14] Hitzman M., Kirkham R., Broughton D., Thorson J., Selley D., "The sediment-hosted stratiform copper ore system", 100^th anniversary volume of Economic Geology 609-612.

[15] Brown A. C., "Refinements for footwall red bed diagenesis in the sediment-hosted stratiform copper deposits model", Economic Geology, 100 (2005) 765–771.

[16] MacIntyre T. J., "Fault-controlled hydrocarbon-related bleaching and sediment-hosted copper mineralization of the Jurassic Wingate sandstone at the Cashin Mine, Montrose County, Colorado", Doctoral dissertation, Colorado School of Mines, Colorado, United State, (2006) 360 pp.

[17] Woodward L. A., Kaufman W. H., Schumacher O. L., Talbott L. W., "Strata-bound copper deposits in Triassic sandstone of Sierra Nacimiento, New Mexico", Economic Geology, 69(1) (1974) 108-120.

[18] Asael D., Matthews A., Bar-Matthews M., Halicz L., "Copper isotope fractionation in sedimentary copper mineralization, Timna Valley, Israel", Chemical Geology, 243 (2007) 238–254.

[19] Yilmaz H., Oyman T., Sonmez F.N., Arehart G.B., Billor Z., "Intermediate sulfidation epithermal gold-base metal deposits in Tertiary subaerial volcanic rocks, Sahinli /Tespitb Dere (Lapseki/ Western Turkey)", Ore Geology Reviews, 37(3-4) (2010) 236-258.

[20] Love L. G., Brockley H., "Peripheral radial texture in framboids of polyframboidal pyrite", Fortschr. Miner., 50 (1973) 264-269.

[21] Walker T. R., "Application of diagenetic alterations in red beds to the origin of copper in stratiform copper deposits. In: Boyle R. W., Brown A. C. Jefferson W., Jowett E. C., Kirkham R. V. (Eds.), Sediment-hosted stratiform copper deposits", Geological Association of Canada, 36 (1989) 85-96.

[22] Flint S. S., "Sediment-hosted stratabound copper deposits of the Central Andes in Boyle, R.W., Brown, A. C., Jefferson, C. W., Jowett, E. C. & Kirkham, R. V., Sediment-hosted stratiform copper deposits", Geological Association of Canada Special Paper, 36 (1989) 371–400.

[23] Brown A. C., "Red beds: Source of metals for sediment-hosted stratiform copper, sandstone copper, sandstone lead, sandstone uranium vanadium deposits. In: Lentz D.R. (Eds.), Geochemistry of sediments and sedimentary rocks: evolutionary considerations to mineral deposit forming environments", Geological Association of Canada, Geotext 4 (2003) 121–133.

[24] Hayashi K.I., Fujisawa H., Holland H.D., Ohmoto H., "Geochemistry of∼ 1.9 Ga sedimentary rocks from northeastern Labrador, Canada", Geochimica et cosmochimica acta, 61(19), (1997) 4115-4137.

[25] Bhatia, M. R., "Plate tectonics and geochemical composition of sandstones", The Journal of Geology, 91(6) (1983) 611-627.‏

[26] Bhatia M.R., Crook K.A., "Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins", Contributions to Mineralogy and Petrology, 92(2), (1986) 181-193.

[27] Rollinson H. R., "Using geochemical data: Evaluation, presentation, interpretation", Longman, UK, 352 p (1993).

[28] Gromet L.P., Haskin L.A., Korotev R.L., Dymek R.F., "The “North American shale composite”: Its compilation, major and trace element characteristics", Contributions to Mineralogy and Petrology, 92(2) (1986) 181-193.

[29] Taylor S.R., McLennan S.M., "The geochemical evolution of the continental crust", Reviews of geophysics, 33(2) (1995) 241-265.

[30] Cox D. P., Carrasco R., André-Ramos O., Hinojosa-Velasco A., Long K. R., "Copper deposits in sedimentary rocks in U.S. Geological Survey and Servicio Geológico de Bolivia, Geology and Mineral resources of the Altiplano and Cordillera Occidental, Bolivia with a section on application of economic evaluations to deposit models by D.I. Bleiwas & R.G. Christiansen", U.S. Geological Survey Bulletin 1975 (1992) 95-108.

[31] Madavi A., "Geology, mineralogy, geochemistry and genesis of the Markesheh Cu deposit, northeast of Ravar, Kerman province", MSc thesis, (2008) 188 p.

[32] Mahdavi A., Rastad A., Hosseini Barzi M., "Mineralogy and structure and formation of the Markesh Cu sedimentary-diagenetic occurrence, لایه قرمز type, in the Jurassic Garahdu formation, south of Central Iran", The quarterly Geology Journal, The Geological Survey and Mineral Exploration of Iran, 21(81) (2011) 81–92.

[33] Panahzadeh M., "An investigation on the Cu-bearing beds in Chehregan village, Tasuj. East Azarbayejan province", MSc thesis, (2010) 225 p.