YU Wang-jie1,2, FANG Wei-xuan2, JIA Run-xing2, WANG Lei2, LU Jia1,2
(1. Kunming University of Science and Technology, Kunming 650093, China; 2. China Non-Ferrous Metals Resource Geological Survey, Beijing 100012, China)
Abstract: Sareke copper deposit has been found as a glutenite-type copper deposit in recent years. The methods of correlation analysis, clustering analysis and factor analysis were applied for investigation and research on primary halos geochemical of drilling, ore-forming elements association and vertical zoning characteristics of mineralize-halo-forming, and discussion of mineralize-halo-forming mechanism for glutenite-type copper deposit. Results show that, ore-forming element Cu has important relation with Mo and Ag, so they can be the direct instructions characteristic elements for glutenite-type copper deposit. Ore-forming hydrotherm is dominated by low-middle temperature, possibly, existing high temperature hydrotherm. The ore-forming environment is sedimentary-diagenetic-type, and Fe participates mineralize- halo-forming effect for glutenite-type copper deposit. Cu, Pb, Zn elements is hosted in the form of sulphide facies; diabase may carry amounts of mineralize-halo-forming materials. The enrichment of ore-forming elements may experience the complex superimposed-transformation effect. Cu-Mo-Ag is the forming-elements-association of glutenite-type copper ore body; Sb-As-Pb is the forming-elements-association of glutenite-type lead ore body; Zn-Cd-Hg is the forming-elements-association of glutenite-type zinc ore body. The elements of Ag, Cu, Pb, Zn, Mo, As, Hg, Cd, and Sb have better enrichment and better differentiation, are the main ore-forming elements and associated ore-forming elements for glutenite-type copper deposit, and reveal the later reformation processes.Vertical zoning characteristics of drilling display that the upper elements association is B-K-Cl, and the Ore-forming elements association is Ag-Cu-Mo- Sr-As-Sb-Pb-Au-Zn-Hg-Cd; the lower elements association is W, and it’s the remarkable ore-forming elements association with hydrothermal superimposition. Speculating mineralization may have experienced multiple-stage superposition, showing that there might be blind ore-bodies in the depth of ore body, and might have a good indication for exploration of ore bodies at the depth.
Keywords: primary geochemical halo; mineralize-halo-forming; correlation analysis; factor analysis; Sareke; glutenite-type copper deposit
E-mail: fangweixuan@tom.com
ACTA MINERALOGICA SINICA Vol. 37, No. 5, 2017, Page 559-567
