بررسی ویژگی‌های کانی‌شناسی، بافتی و زمین شیمیایی منطقه اکتشافی مس امیر‌آباد، شمال‌غرب نیشابور

نوع مقاله : مقاله پژوهشی

نویسندگان

1 گروه زمین‌شناسی، دانشکده علوم، دانشگاه فردوسی مشهد، مشهد، ایران

2 گروه زمین‌شناسی و گروه پژوهشی اکتشاف ذخایر معدنی شرق ایران، دانشکده علوم، دانشگاه فردوسی مشهد، مشهد، ایران

چکیده

منطقه اکتشافی امیرآباد در شمال­غرب شهرستان نیشابور، در استان خراسان­رضوی واقع است. زمین­شناسی منطقه شامل واحدهای ­آذرین نیمه­عمیق (دیوریت­پورفیری) با سن ائوسن پسین، آتشفشانی (آندزیت) و رسوبی (ماسه­سنگ و کنگلومرا) با سن پالئوژن است. واحد­های رسوبی منطقه شامل تناوبی از ماسه­سنگ سرخ اکسایشی، ماسه­سنگ خاکستری و کنگلومراست. از نظر موقعیت زمین ساختی، ماسه­سنگ­ها در شرایط قوس قاره­ای تا اقیانوسی در حوضه رسوبی نهشته شده­اند. کانی­سازی مس بصورت عدسی و لایه­ای (هم درونزادی) در بخش­هایی با ترکیب بیشتر لیت آرنایتی (درشت دانه) و دارای سنگواره­های گیاهی فراوان رخ داده است. کانی­سازی اولیه (با بافت­های پراکنده، رگچه­ای و جانشینی) شامل پیریت و کالکوسیت بوده است که طی مراحل برون­زاد کانی­های ثانویه کالکوسیت، کوولیت، مالاکیت، هماتیت و گوتیت ایجاد شده­اند. بیشترین بی­هنجاری­های زمین شیمیایی در افق­های کانی­سازی برای مس 6 درصد، نقره 14 گرم در تن و روی 99 گرم در تن است. بر پایه نوع سنگ میزبان، نوع کانی­های سولفیدی، بافت و عوامل کنترل کننده کانه­زایی (وجود آثار گیاهی به عنوان عامل احیا کننده و نفوذپذیری سنگ میزبان) این منطقه شبیه کانسار­های مس رسوبی نوع سرخ لایه است.     

کلیدواژه‌ها

عنوان مقاله [English]

Investigation of mineralogical, textural and geochemical properties in Amir Abad copper prospect area, Northwest of Neyshabur

نویسندگان [English]

  • Fahimeh Rahmani 1
  • Azadeh Malekzadeh Shafaroudi 2
  • Maryam Javidi Moghaddam 1
1 Department of Geology and Research Center for Ore Deposit of Eastern Iran, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
2 Department of Geology and Research Center for Ore Deposit of Eastern Iran, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
چکیده [English]

Amir Abad prospect area is located in northwestern Neyshabur, Khorasan Razavi Province. Geology of the area includes post-Eocene subvolcanic igneous (diorite porphyry), Paleogene volcanic (andesite) and sedimentary (sandstone and conglomerate) units. Sedimentary units of the area consist of layers of oxidized red sandstone, gray sandstone and conglomerate. Sandstones deposited in a continental to oceanic island arc tectonic setting within sedimentary basin. Copper mineralization, as layer and lens (syndiagenetic), occurs in sections with mostly lithic arenite composition (coarse grain) and abundant plant fossil. Primary minerals (with disseminated, veinlet and replacement textures) include pyrite and chalcocite, which during secondary stages chalcocite, covellite, malachite, hematite and goethite were formed. Maximum geochemical anomalies in the horizons of mineralization for copper, silver, and zinc are %6, 14 ppm and 99 ppm respectively.. Based on type of host rock, sulfide minerals, texture and mineralization controlling agen (presence of plant traces as reducing factor and host rock permeability), mineralization type is similar to sedimentary copper deposits of Red Bed type.

کلیدواژه‌ها [English]

  • Geochemistry
  • Syngenetic
  • Red bed-type copper mineralization
  • Amir Abad
  • Neyshabur

مراجع

  1. [1] Hitzman M., Kirkham R., Broughton D., Thorson J., Selley D., " The sediment-hosted stratiform copper ore system". In Hedenquist, J.W., Thompson, J.F.M., R.J., Goldfarb, Richards, J.P., (Ed.), One Hundered Anniversary volume. Economic Geology, Littleton (2005( 609-612. [DOI:10.5382/AV100.19]
  2. [1] Hitzman M., Kirkham R., Broughton D., Thorson J., Selley D., " The sediment-hosted stratiform copper ore system". In Hedenquist, J.W., Thompson, J.F.M., R.J., Goldfarb, Richards, J.P., (Ed.), One Hundered Anniversary volume. Economic Geology, Littleton (2005( 609-612. [DOI:10.5382/AV100.19]
  3. [2] Cox D.P., Lindsey D.A, Singer D.A., Diggles M.F., "Sediment-hosted copper deposits of the world-deposit models and database", U.S. Geological Survey, Canada, Open-file report 03-107, (2007) 50 p.
  4. [2] Cox D.P., Lindsey D.A, Singer D.A., Diggles M.F., "Sediment-hosted copper deposits of the world-deposit models and database", U.S. Geological Survey, Canada, Open-file report 03-107, (2007) 50 p.
  5. [3] Hayes T.S., Cox D.P., Piatak N.M., Seal R.R., "Sediment-hosted stratabound copper deposit model ", Survey, Virginia (2015) 147 p. [DOI:10.3133/sir20105070M]
  6. [3] Hayes T.S., Cox D.P., Piatak N.M., Seal R.R., "Sediment-hosted stratabound copper deposit model ", Survey, Virginia (2015) 147 p. [DOI:10.3133/sir20105070M]
  7. [4] Fazelnia M.S., Karimi M., Nouri Khankhedani, K., Hashemis, S.A., "Introduction of Sedimentary Copper Mineralization in Demshahr Region", 17th Conference of Geological Society of Iran, (2012) 440-448.
  8. [4] Fazelnia M.S., Karimi M., Nouri Khankhedani, K., Hashemis, S.A., "Introduction of Sedimentary Copper Mineralization in Demshahr Region", 17th Conference of Geological Society of Iran, (2012) 440-448.
  9. [5] Arjamandzadeh R., Sharifi Tashnizi A., Ahmadi A., Mahdavi A., Tusli S., Vadbiri R., "Mineralogy, Geochemistry and Genesis of Copper-Uranium Sedimentary Deposit of Aghle Mesi, Tabas Block, Central Iran", Earth Science Researches, 11 (2019) 47-70. [DOI:10.52547/esrj.11.4.47]
  10. [5] Arjamandzadeh R., Sharifi Tashnizi A., Ahmadi A., Mahdavi A., Tusli S., Vadbiri R., "Mineralogy, Geochemistry and Genesis of Copper-Uranium Sedimentary Deposit of Aghle Mesi, Tabas Block, Central Iran", Earth Science Researches, 11 (2019) 47-70. [DOI:10.52547/esrj.11.4.47]
  11. [6] Maghfouri S., Rastad E., Borg G., Hosseinzadeh M. R., Movahednia M., Mahdavi A., Mousivand F., "Metallogeny and temporal-spatial distribution of sediment-hosted stratabound copper (SSC-type) deposits in Iran; implications for future exploration", Ore Geology Reviews, 127 (2020) 103-834. [DOI:10.1016/j.oregeorev.2020.103834]
  12. [6] Maghfouri S., Rastad E., Borg G., Hosseinzadeh M. R., Movahednia M., Mahdavi A., Mousivand F., "Metallogeny and temporal-spatial distribution of sediment-hosted stratabound copper (SSC-type) deposits in Iran; implications for future exploration", Ore Geology Reviews, 127 (2020) 103-834. [DOI:10.1016/j.oregeorev.2020.103834]
  13. ]7] Alavi M., "Sedimentary and structural characteristics of the Paleo-Tethys remnants in northeastern Iran", Geological Society of America Bulletin, 103 (1991) 983-992.

    https://doi.org/10.1130/0016-7606(1991)1032.3.CO;2 [DOI:10.1130/0016-7606(1991)1032.3.CO;2]
  14. ]7] Alavi M., "Sedimentary and structural characteristics of the Paleo-Tethys remnants in northeastern Iran", Geological Society of America Bulletin, 103 (1991) 983-992.

    https://doi.org/10.1130/0016-7606(1991)1032.3.CO;2 [DOI:10.1130/0016-7606(1991)1032.3.CO;2]
  15. [8] Bauman A., Spies O., Lensch G., "Strontium isotopic composition of post-ophiolithic tertiary volcanics between Kashmar, Sabzevar and Qucha NE Iran", in Almassi A. (eds.), Geodynamic project (geotraverse) in Iran. Geological Survey of Iran, Tehran (1983) 267-276.
  16. [8] Bauman A., Spies O., Lensch G., "Strontium isotopic composition of post-ophiolithic tertiary volcanics between Kashmar, Sabzevar and Qucha NE Iran", in Almassi A. (eds.), Geodynamic project (geotraverse) in Iran. Geological Survey of Iran, Tehran (1983) 267-276.
  17. [9] Spies O., Lensch G., Mihem A., "Chemistry of the post_ophiolithic tertiary volcanic between Sabzevar and Quchan, NE ran", in Almassi A. (eds.), Geodynamic Project (geotraverse) in Iran. Geological Survey of Iran, Tehran (1983) 247-266.
  18. [9] Spies O., Lensch G., Mihem A., "Chemistry of the post_ophiolithic tertiary volcanic between Sabzevar and Quchan, NE ran", in Almassi A. (eds.), Geodynamic Project (geotraverse) in Iran. Geological Survey of Iran, Tehran (1983) 247-266.
  19. [10] Karimpour M.H., Malekzadeh Shafaroudi A., Esfandiarpour A., Mohammadnejad H., "Nyshabour Turquoise mine: The first Cu-Au-ULREE IOCG type in Iran. Iranian Journal of Economic Geology", 3 (2012) 193-216.
  20. [10] Karimpour M.H., Malekzadeh Shafaroudi A., Esfandiarpour A., Mohammadnejad H., "Nyshabour Turquoise mine: The first Cu-Au-ULREE IOCG type in Iran. Iranian Journal of Economic Geology", 3 (2012) 193-216.
  21. [11] Zarei A., Malekzadeh Shafaroudi A., Karimpour M.H., "Geochemistry and Genesis of Iron-apatite Ore in the Khanlogh Deposit, Eastern Cenozoic Quchan-Sabzevar Magmatic Arc, NE Iran", Acta geologica sinica 90 (2016) 121-137. [DOI:10.1111/1755-6724.12646]
  22. [11] Zarei A., Malekzadeh Shafaroudi A., Karimpour M.H., "Geochemistry and Genesis of Iron-apatite Ore in the Khanlogh Deposit, Eastern Cenozoic Quchan-Sabzevar Magmatic Arc, NE Iran", Acta geologica sinica 90 (2016) 121-137. [DOI:10.1111/1755-6724.12646]
  23. [12] Asadzadeh Z, Heydarian Shahri M.R., Malekzadeh Shafaroudi A, "Geology, mineralogy and geochemistry of copper exploration area of Al-Majuq, Khorasan-Razavi province", Second International Congress of Applied Geology, Islamic Azad University of Mashhad (2014) 328-336.
  24. [12] Asadzadeh Z, Heydarian Shahri M.R., Malekzadeh Shafaroudi A, "Geology, mineralogy and geochemistry of copper exploration area of Al-Majuq, Khorasan-Razavi province", Second International Congress of Applied Geology, Islamic Azad University of Mashhad (2014) 328-336.
  25. [13] Ghaemi F., Hosseini K., "Geological map of Neishabur" Scale 1:100,000, Organization of Geology and Mineral Exploration of Iran (1999).
  26. [13] Ghaemi F., Hosseini K., "Geological map of Neishabur" Scale 1:100,000, Organization of Geology and Mineral Exploration of Iran (1999).
  27. [14] Folk R.L., "Petrology of sedimentary Rocks", Austin, Texas, Hemphill (1980)159 p.
  28. [14] Folk R.L., "Petrology of sedimentary Rocks", Austin, Texas, Hemphill (1980)159 p.
  29. [15] Whitney D.L., Evans B.W., "Abbreviations for names of rock-forming minerals", American Mineralogist 95 (2010) 185-187. [DOI:10.2138/am.2010.3371]
  30. [15] Whitney D.L., Evans B.W., "Abbreviations for names of rock-forming minerals", American Mineralogist 95 (2010) 185-187. [DOI:10.2138/am.2010.3371]
  31. [16] 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) 710 p.
  32. [16] 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) 710 p.
  33. [17] Kirkham R. V., "Sediment-hosted stratiform copper. Geological Survey of Canada, Geology of Canada", 8 (1995) 223-240. [DOI:10.4095/207984]
  34. [17] Kirkham R. V., "Sediment-hosted stratiform copper. Geological Survey of Canada, Geology of Canada", 8 (1995) 223-240. [DOI:10.4095/207984]
  35. [18] Brown A. C., "World-class sediment-hosted stratiform copper deposits characteristics, genetic concepts and metallotects ", Australian Journal of Earth Sciences 44 (1997) 317-328. [DOI:10.1080/08120099708728315]
  36. [18] Brown A. C., "World-class sediment-hosted stratiform copper deposits characteristics, genetic concepts and metallotects ", Australian Journal of Earth Sciences 44 (1997) 317-328. [DOI:10.1080/08120099708728315]
  37. [19] Brown A. C., "Global-scale constraints on the formation of sediment-hosted stratiform copper deposits", Proceedings, International Cornet symposium, Mons (1997) 93-102.
  38. [19] Brown A. C., "Global-scale constraints on the formation of sediment-hosted stratiform copper deposits", Proceedings, International Cornet symposium, Mons (1997) 93-102.
  39. [20] Brown, A. C., "sorkh layeh: source of metals for sediment-hosted stratiform copper, sandstone copper, sandstone lead, and sandstone uranium-vanadium deposits", Geological Association of Canada, Geotext 4 (2003) 121-133.
  40. [20] Brown, A. C., "sorkh layeh: source of metals for sediment-hosted stratiform copper, sandstone copper, sandstone lead, and sandstone uranium-vanadium deposits", Geological Association of Canada, Geotext 4 (2003) 121-133.
  41. [21] Bikdeli Z., Ebrahimi M., Nabatian Q., Mokhtari M.A., "Mineralization, Mineralogy, Structure and Texture of Cheharabad Sedimentary Copper Deposit, Northwestern Zanjan ", Scientific-Research Quarterly of Earth Sciences 96 (2013) 249-262.
  42. [21] Bikdeli Z., Ebrahimi M., Nabatian Q., Mokhtari M.A., "Mineralization, Mineralogy, Structure and Texture of Cheharabad Sedimentary Copper Deposit, Northwestern Zanjan ", Scientific-Research Quarterly of Earth Sciences 96 (2013) 249-262.
  43. [22] Roser B. P., Korsch R. J., "Determination of tectonic setting of sandstone-mudstone suites using SiO2 content and K2O/Na2 Oratio", Journal of Geology 94 (1986) 635- 650. [DOI:10.1086/629071]
  44. [22] Roser B. P., Korsch R. J., "Determination of tectonic setting of sandstone-mudstone suites using SiO2 content and K2O/Na2 Oratio", Journal of Geology 94 (1986) 635- 650. [DOI:10.1086/629071]
  45. [23] Bhatia M. R., Crook K. A. W., "Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins", Contributions to Mineralogy and Petrology 92 (1986) 181-193. [DOI:10.1007/BF00375292]
  46. [23] Bhatia M. R., Crook K. A. W., "Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins", Contributions to Mineralogy and Petrology 92 (1986) 181-193. [DOI:10.1007/BF00375292]
  47. [24] Cox D. P., Carrasco R., André-Ramos O., Hinojosa-Velasco A., Long K. R., "Copper deposits in sedimentary rocks in U.S ", In Bleiwas, D.I. and Christiansen, R.G., (Eds.), Geology and Mineral resources of the Altiplano and Cordillera Occidental, Bolivia with a section on Application of economic evaluations to deposit models; Geological Survey and Servicio Geológico de Bolivia, Geological Survey Bulletin (1991) 95-108.
  48. [24] Cox D. P., Carrasco R., André-Ramos O., Hinojosa-Velasco A., Long K. R., "Copper deposits in sedimentary rocks in U.S ", In Bleiwas, D.I. and Christiansen, R.G., (Eds.), Geology and Mineral resources of the Altiplano and Cordillera Occidental, Bolivia with a section on Application of economic evaluations to deposit models; Geological Survey and Servicio Geológico de Bolivia, Geological Survey Bulletin (1991) 95-108.
  49. [25] Thorson J. P., "Paradox Basin sandstone-hosted copper deposits generated by two episodes of basinal fluid expulsion ", Geological Society of America, Abstracts with Programs 36 (2004) 517p.
  50. [25] Thorson J. P., "Paradox Basin sandstone-hosted copper deposits generated by two episodes of basinal fluid expulsion ", Geological Society of America, Abstracts with Programs 36 (2004) 517p.
  51. [26] 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, (1974) 108-120. [DOI:10.2113/gsecongeo.69.1.108]
  52. [26] 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, (1974) 108-120. [DOI:10.2113/gsecongeo.69.1.108]
  53. [27] Avila-Salinas W., "Origin of the copper ore at Corocoro ", Bolivia in Fontbote, Amstutz, G.C., Cardozo, M., Cedillos, E., Frutas, J., eds., Stratabound ore deposits of the Andes. Berlin-Heidelberg, Springer Verlag (1990) 659-670. [DOI:10.1007/978-3-642-88282-1_52]
  54. [27] Avila-Salinas W., "Origin of the copper ore at Corocoro ", Bolivia in Fontbote, Amstutz, G.C., Cardozo, M., Cedillos, E., Frutas, J., eds., Stratabound ore deposits of the Andes. Berlin-Heidelberg, Springer Verlag (1990) 659-670. [DOI:10.1007/978-3-642-88282-1_52]
  55. [28] Gablina I.F., " New data on formation conditions of the Dzhezkazgan copper deposit ", International Geology Review 23 (1981) 1303-1311. [DOI:10.1080/00206818209467263]
  56. [28] Gablina I.F., " New data on formation conditions of the Dzhezkazgan copper deposit ", International Geology Review 23 (1981) 1303-1311. [DOI:10.1080/00206818209467263]
  57. [29] ‏ Adkins A.R., " Geology of the Montanore stratabound Cu-Ag deposit, Lincoln and Sanders Counties, Montana ", Belt Symposium III, Program and Abstracts, Whitefish, Montana, USA. (1993).
  58. [29] ‏ Adkins A.R., " Geology of the Montanore stratabound Cu-Ag deposit, Lincoln and Sanders Counties, Montana ", Belt Symposium III, Program and Abstracts, Whitefish, Montana, USA. (1993).
  59. [30] Annels A.E., " Ore genesis in the Zambian Copper belt, with particular reference to the northern sector of the Chambishi basin", In: Boyle, R.W., Brown, A.C., Jefferson, C.W., Jowett E.C., Kirkham R.V. (Ed.), Sediment - hosted Stratiform Copper Deposits. Geological Association of Canada, Special Paper 36, Canada (1989) 427-452.
  60. [30] Annels A.E., " Ore genesis in the Zambian Copper belt, with particular reference to the northern sector of the Chambishi basin", In: Boyle, R.W., Brown, A.C., Jefferson, C.W., Jowett E.C., Kirkham R.V. (Ed.), Sediment - hosted Stratiform Copper Deposits. Geological Association of Canada, Special Paper 36, Canada (1989) 427-452.
  61. [31] Oszczepalski S., "Origin of the Kupferschiefer polymetallic mineralization in Poland", Mineralium Deposita 34 (1999) 599-613. [DOI:10.1007/s001260050222]
  62. [31] Oszczepalski S., "Origin of the Kupferschiefer polymetallic mineralization in Poland", Mineralium Deposita 34 (1999) 599-613. [DOI:10.1007/s001260050222]

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  • تاریخ دریافت: 01 شهریور 1401
  • تاریخ بازنگری: 27 آبان 1401
  • تاریخ پذیرش: 30 آذر 1401

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