Geochemical constraints on the Triassic–Jurassic Amir-Abad karst-type bauxite deposit, NW Iran
作者: Ali AbediniMaryam Khosravi
作者单位: 1Department of Geology, Faculty of Sciences, Urmia University, 57561-51818 Urmia, Iran
2Department of Earth Sciences, College of Sciences, Shiraz University, Shiraz 71454, Iran
刊名: Journal of Geochemical Exploration, 2020, Vol.211
来源数据库: Elsevier Journal
DOI: 10.1016/j.gexplo.2020.106489
关键词: Amir-Abad karst-type bauxiteMass balanceChemical Index of AlterationParental affinityNorthwestern Iran
英文摘要: Abstract(#br)The Amir-Abad karst-type bauxite deposit is located in the Irano–Himalayan bauxite belt, 8 km of south of Maragheh city in northwestern Iran. The bauxite ores occur as layers and lens-shaped pockets in the contact of the Triassic dolomitic limestone of the Elika Formation and the Lower Jurassic sandstone, siltstone, shale, and coal of the Shemshak Formation. Based on the PXRD and SEM-EDS analyses, the bauxite ores mainly consist of diaspore, hematite, and kaolinite group minerals (e.g., kaolinite and montmorillonite), with lesser amounts of goethite, anatase/rutile, and zircon. Nickel, Cr, Co, and V show a pattern similar to Fe; they were leached from the uppermost parts of the profile by acidic percolating solutions, and concentrated toward the carbonate bedrock under...
全文获取路径: Elsevier  (合作)
影响因子:1.952 (2012)

  • Jurassic 侏罗纪
  • Triassic 三叠纪
  • bauxite 铝土矿
  • karst 岩溶
  • balance 平衡
  • affinity 亲和力
  • constraints 系统规定参数
  • deposit 沉积