Mineralogy, alteration, fluid inclusion and stable isotopes studies of the Sharifabad -Bardeskan copper deposit, NE Iran

Ebrahimi, Susan; Arabamiri, Alireza; Ghanbari, Hadi

doi:10.22071/gsj.2020.197243.1687

Document Type : Original Research Paper

Authors

¹ Assistant Professor, Faculty of Mining Engineering, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, Iran,

² Associate Professor, Faculty of Mining Engineering, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, Iran

³ M.S. Student, Faculty of Mining Engineering, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, Iran

https://doi.org/10.22071/gsj.2020.197243.1687

Abstract

The Sharifabad-Bardeskan copper mineralization is located in northeast of Bardeskan and south section of Sabzevar Zone. Mineralization occurs as vein in the pyroxene andesite, tuff, sandstone and conglomerate of Eocene age, which bearing local sericite - carbonate and silicic alterations and regional propylitic alteration. Mineralization occurs as open space filling, disseminated, veinlets and consists of chalcocite pyrite, chalcopyrite, malachite, azurite with calcite and quartz as gangue minerals.
Fluid inclusion studies in calcite show the evidence of mixing trend during the ore formation occurred at a wide range of temperature 200to 437 °C and varying salinity between 0.1 to 9.2 wt.% NaCl equivalent. The stable isotope composition of δ34S fall in a range of -23 to -24.3‰ could be considered as biogenetic sulfur from bacterial sulfate reduction. The δ13C values of calcite vary between -3.4 to -24.5‰ suggest a major contribution of marine carbonates associated igneous carbonates. Copper and sulfide rich hydrothermal fluid has flowed upward through the local faults and permeable interbeds within the Eocene volcanic sequence and formed the mineralized veins. Based on the mineralization, alteration, fluid inclusion and stable isotopes, Sharifabad mineralization is similar to those manto type deposits in Chile.

Keywords

20.1001.1.10237429.1399.30.117.12.0

Main Subjects

Economic Geology

References

Aghanabati, A., 1986- Geological map of the Middle East. Geological Survey of Iran, Tehran.

Alavi, M., 1991- Tectonic map of the Middle East, Geological Survey of Iran, Tehran.

Albinson, T., Norman, D.I., Cole, D., and Chomiak, B., 2001- Control on formation of low- sulfidation epithermal deposits in Mexico. Constrain from fluid inclusion and stable isotope data. Society of Economic Geologist Special Publication, 8, 1-33. doi: 10.1130/0091-7613(1995)023.

Burrows, D.R., and Spooner, E.T.C. , 1987- Generation of a magmatic H₂O-CO₂ fluid enrichment in Mo, Au, and W within an Archean sodic granodiorite stock, Mink Lake, northwestern Ontario, Economic Geology, 82, 1931-1957. doi:10.2113/gsecongeo.82.7.1931.

Henley, R.W., 1985- The geothermal framework of epithermal deposits, Review in Economic Geology, 2, 1-24.

Hoefs, J., 2004- Stable isotope geochemistry, Springer-Verlog, Berlin, 244 p.

Kojima, S., Astudillo, J., Rojo, J., Trista´, D. & Hayashi, K., 2003- Ore mineralogy, fluid inclusion, and stable isotopic characteristics of stratiform copper deposits in the coasta Cordillera of northern Chile: Mineralium Deposita, v. 38, p. 208–216.
DOI 10.1007/s00126-002-0304-5.

Kojima, S., Trista Aguilera, D. and Hayashi, K.I., 2009- Genetic aspects of the Manto-type copper deposits based on geochemical studies of north Chilean deposits. Resource Geology, 59, 87-98. doi: 10.1111/j.1751-3928.2008.00081.

Kyser, T.K., and Kerrich, R., 1990- Geochemistry of fluids in tectonically active crustal regions. In: Nesbitt BE (ed), Short course on fluids in tectonically active regimes of the continental crust. Mineralogical Association of Canada, Vancouver, 133-230.

Lefebure, D. V. & Church, B. N., 1996- Volcanic Redbed Cu, in Selected British Columbia Mineral Deposit Profiles, Volume 1 – Metallic Deposits, Lefebure, D. V. & Hõy, T, Editors, British Columbia Ministry of Employment and Investment, Open File, v. 13, p. 5-7.

Ohmoto, H., and Rye, R.O., 1979- Isotopes of sulfur and carbon, in Barnes, H. L., (ed.), Geochemistry of hydrothermal ore deposits, Wiley Inter science, New York, 509-567.

Ohmoto, H., Goldhaber, M.B., 1997- Sulfur and carbon isotopes: In H. L. Barnes (ed), Geochemistry of hydrothermal ore deposits, 3rd ed., New York, John Wiley and Sons, pp. 517-611.

O’Neil, J.R., Clayton, R.N., and Maeda, T.K., 1969- Oxygen isotope fraction in divalent metal carbonate. Journal of Chemical Physics, 51, 5547-5558. doi.org/10.1063/1.1671982.

Oyarzun, R., Ortega, L., Sierra, J., Lunar, R. & Oyarzun, J., 1998- Cu, Mn, and mineralization in the Quebrada Marquesa Quadrangle, Chile: the Talcuna and Arqueros districts: Mineralium Deposita, v. 33, p. 547-559. https://eprints.ucm.es/44778/1/07%201998-Oyarzun%20el%20al.%20-%20MD%20-%20Talcuna1.pdf.

Ramírez, L. E., Palacios, C., Townley, B., Parada, M. A., Sial, A. N., Fernandez- Turiel, J. L., Gimeno, D., Garcia-Valles, M. & Lehmann, B., 2006- The Mantos Blancos copper deposit: An upper Jurassic breccia-style hydrothermal system in the coastal range of northern Chile: Mineral Deposita v. 41, p. 246 – 258. https://core.ac.uk/download/pdf/36042058.pdf.

Richards, J.P., and Spooner, E.T.C., 1989- Evidence for Cu-(Ag) mineralization by magmatic meteoric fluid mixing in Keweenawan fissure veins, Mamainse Point, Ontario, Economic Geology, 84, 360-385. doi:10.2113/gsecongeo.84.2.360.

Roedder, E., 1984- Fluid inclusions: Reviews mineralogy, Mineralogy Society of America, v. 12, 644 p.

Sengör, A.M.C., 1990- A new model for the Late Paleozoic-Mesozoic tectonic evolution of Iran and implications for Oman. In: Robertson, A.H.F., Searle, M.P., Ries, A.C. (Eds.), The Geology and Tectonics of the Oman Region. Geological Society of London Special Publication, 49, 797–831. doi.org/10.1144/GSL.SP.1992.049.

Seward, T.M., 1973- Thio complexes f gold and the transport of gold in hydrothermal ore solutions. Geochem. Cosmo. Acta., 37, 370-399. DOI. 10.1016/0016-7037(73)90207-X.

Simmons, S. F., and Browne, P. R., 2000- Hydrothermal minerals and precious metals in the Broadlands- Ohaaki geothermal system: Implication for understanding low- sulfidation epithermal environments, Economic Geology, 95, 971-999. 971-999. doi:10.2113/gsecongeo.95.5.971.

Stöcklin, J.,1968- Structural history and tectonics of Iran, a review, American Association of Petroleum Geologists Bulletin, 52, 1229–1258. DOI: 10.4236/ojg.2015.52006.

Whitney, D. L., Evans, B.W., 2010- Abbreviations for names of rock-forming minerals, American Mineralogist, v. 95, No. 2, p. 185-187. DOI: 10.2138/am.2010.3371 185.

Wilson, N. S. F. and Zentilli, M., 2006- Association of pyrobitumen with copper mineralization from the Uchumi and Talcuna districts, Central Chile, International Journal of Coal geology, v.65, p. 158-169. DOI:10.1016/j.coal.2005.04.012.

Wilson, N. S. F., Zentilli, M. and Spiro, B., 2003- A sulfur, carbon, oxygen, and strontium isotope study of the volcanic-hosted El Soldado manto-type copper district, Chile: the essential role of bacteria and petroleum, Economic Geology, 98, 163-174. doi:10.2113/gsecongeo.98.1.163.

Scientific Quarterly Journal of Geosciences

Mineralogy, alteration, fluid inclusion and stable isotopes studies of the Sharifabad -Bardeskan copper deposit, NE Iran

References

References

Volume 30, Issue 117
Volume 30, Issue 3, Serial Number 117, Autumn 2020
December 2020
Pages 135-146

Mineralogy, alteration, fluid inclusion and stable isotopes studies of the Sharifabad -Bardeskan copper deposit, NE Iran

References

References

Volume 30, Issue 117Volume 30, Issue 3, Serial Number 117, Autumn 2020December 2020Pages 135-146

Volume 30, Issue 117
Volume 30, Issue 3, Serial Number 117, Autumn 2020
December 2020
Pages 135-146