Document Type : Research Paper
Authors
Nuclear Fuel Cycle Research School, Nuclear Science and Technology Research Institute, AEOI, P.O.Box: 11365-8486, Tehran - Iran
Abstract
The Talmessi deposit is located approximately 30 km west of Anarak city and 200 km east of Isfahan, in the Anark district within the structural zone of Central Iran. The main host rock for mineralization in the Talmessi deposit is andesite to andesite-basalt. Mineralogical studies conducted using a field emission electron microscope indicate the presence of at least four stages of mineralization in the Talmessi deposit. The first stage involves fissure-filling copper sulphide mineralization, which is related to Eocene volcanism. The second stage presents itself in the form of nickel-copper vein arsenide mineralization, with the primary mineral being nickeline, accompanied by minor amounts of chalcocite and pyrite. In the third stage, nickel, cobalt, and copper arsenides (such as domeykite, rammelsbergite, safflorite, skutterudite, koutekite, and kutinaite) are deposited, along with minor amounts of copper sulfide (chalcocite), as well as uranium minerals including uraninite, brannerite, and coffinite. During the final stage, as oxidant fluids infiltrate, the minerals from the previous stages are replaced by nickel arsenates (such as xanthiosite), copper arsenates, and secondary uranium minerals. Primary uranium minerals undergo a transformation into secondary uranium minerals, such as uranium arsenate (chadwickite), copper-uranium arsenate (cuprosklodowskite, zeunerite), calcium-uranium silicate (uranophane), uranium carbonate (rutherfordine), calcium-uranium carbonate (sharpite), and calcium-uranium phosphate (autunite).
Highlights
- Boomeri M, Nakashima K, Lentz D. The Sarcheshmeh porphyry copper deposit, Kerman, Iran: A mineralogical analysis of the igneous rocks and alteration zones including halogen element systematics related to Cu mineralization processes. Ore Geology Reviews. 2010;38(4):367-381.
- Rezazadeh S, Hosseinzadeh M.R, Raith J.G, Moayyed M. Mineral chemistry and phase relations of Co–Ni arsenides and sulfarsenides from the Baycheh-Bagh deposit, Zanjan province, Iran. Ore Geology Reviews. 2020;1217:103836.
- Rezazadeh S, Hosseinzadeh M.R, Raith J.G, Moayyed M. Sulfosalts record evolution of Cu-Bi-Co-Ni-As mineralization at Baycheh-Bagh deposit, NW Iran. Ore Geology Reviews. 2021;139:104465.
- Bagheri H. The role of tectonomagmatic controls on Cu-Ni-Co-As(U) mineralization in the Talmessi mining area [dissertation]. Shiraz, Iran: Shiraz University. 2006 [In Persian].
- Bagheri H, Moore F, Alderton D.H.M. Cu–Ni–Co–As (U) mineralization in the Anarak area of Central Iran. Asian Earth Sciences. 2007;29:651-665.
- Sayari M. Petrology of Eocene volcanic rocks in north of Anarak area (NE of Isfahan province) [dissertation]. Isfahan, Iran: Isfahan University. 2006 [In Persian].
- Kheradmand A. Economic geology of Cu Talmessi deposit (Anarak area) [dissertation]. Tehran, Iran: Shahid Beheshti University. 1998 [In Persian].
- Bariand P. Contribution a la mineralogie de l'Iran. Bull. Soc. franc. Min. Crist. 1963;86:17-64.
- Sarcia J, Sarcia J. Indices uraniféres dans la région d, Anarak (plateau central Iran). Compte Rendu Sommaire des Séances de la Société Géologique de France. 1960;4:76-78.
- Tarkian M, Bock W.D, Neumann M. Geology and mineralogy of the Cu-Ni-Co-U ore deposits at Talmessi and Meskani, Central Iran. TMPM Tschermaks Mineralogische und Petrographische Mitteilungen. 1983;32:111-133.
- Ahmadi M. Geological and petrological studies of the north of Talmessi mine shoshonitic association, west of Anarak (north east of Isfahan province) [dissertation]. Isfahan, Iran: Isfahan University. 2003 [In Persian].
- Bagheri H. Crustal lineament control on mineralization in the Anarak area of Central Iran. Ore Geology Reviews. 2015;66:293-308.
- Bagheri H, Moore F, Romanko A. Role of U-bearing carbonate complexes in U-Cu-Ni-Co mineralization at Talmessi area and the its exploratory and ecological importance. 7th Conference of the Geology of Iran. Isfahan, Iran: Isfahan University. 2003 Aug; 26-28. [In Persian].
- Mokhtarzadeh B.M, Bagheri H. Geochemical, mineralogical and fluid inclusion studies of Cu, Ni, Co and U of Meskani ore deposit, Anarak (Central Iran). Petrology. 2011;5:1-18 [In Persian].
- Markl G, Burisch M, Neumann U. Natural fracking and the genesis of five element veins. Mineral Deposita. 2016;51:703-712.
- Burisch M, Gerdes A, Walter B.F, Neumann U, Fettel M, Markl G. Methane and the origin of five-element veins: mineralogy, age, fluid inclusion chemistry and ore forming processes in the Odenwald, SW Germany. Ore Geology Reviews. 2017;81:42-61.
- Kreissl S, Gerdes A, Walter B.F, Neumann U, Wenzel T, Markl G. Reconstruction of a>200Ma multi-stage “five elements” Bi-Co-Ni-Fe-As-S system in the Penninic Alps, Switzerland. Ore Geology Reviews. 2018;95:746-788.
- Kissin S.A. Five-element (Ni-Co-As-Ag-Bi) veins. Geoscience Canada. 1992;19:113-124.
Keywords
