University of Tehran Geopersia 2228-7817 8 2 2018 07 01 Geochemical Distribution of Heavy Metals and Assessment of Environmental Indicators in Chah-Shaljami Polymetal Ore deposit, South of Birjand, Iran - 307 317 67112 10.22059/geope.2018.260186.648395 EN Rahim Dabiri Department of Geology, Mashhad Branch, Islamic Azad University, Mashhad, Iran Heydar Hagdoust Department of Geology, Mashhad Branch, Islamic Azad University, Mashhad, Iran Reza Arjmandzadeh Department of Geology, Payame Noor University (PNU), P.O.BOX 19395-3697 Tehran, Iran Journal Article 2018 06 13 The Chah-Shaljami polymetal ore deposit contains heavy metal anomalies in various mineralization zones. Geochemical distribution and correlation of elements in surficial soilsindicate that sulfide, sulfate, sulfosalt and silicate mineral occurrences (e.g. Pyrite, chalcopyrite, galena, sphalerite, molybdenite, enargite, hornblend and biotite) in mineralization and stockwork zones resulted in the strong correlation between some elements such as Fe, Mn, Mg, Ni, Pb, Zn, Cr, Sn. In addition, there is a relatively strong correlation between Cd, Ti, Ba, Al which may be related to the vein-veinlets and the intrusives. Contamination indexes (enrichment factor, geoaccumulation index (Igeo), contamination factor and modified contamination degree) were used to assess the soil and sediment enrichment in Chah-Shaljami ore deposit. These indexes indicate enrichment of S, Sb, Mn, Pb. Sulfide, sulfate and sulfosalt minerals cause strong sulfur enrichment. Cadmium is weakly contaminated as can be inferred from its paragenetic association with Pb-Zn minerals in polymetal ore deposits. https://geopersia.ut.ac.ir/article_67112_b4ef1916eaa245c1ee508f49418b5d3a.pdf