Geochemical explorations and introduction of stratabound copper in Samanloo area, west of Sabalan, NW of Iran

Document Type : Original Article

Authors

Earth Sciences Department, University of Tabriz

Abstract

Samanloo area is located 19 km southwest of Meshginshahr and west of Sabalan Mountain. The lithologic units in this area include Eocene volcano-sedimentary sequence (andesite, trachy andesite with tuff and shale interlayers and mafic lava flows), Oligocene intrusions (granodiorite, granite and monzonite) and Quaternary units (Andesite – basalt). In terms of magmatic series, the igneous units in this area have high-K calc-alkaline characteristics and formed in magmatic arc tectonic zone. Remote sensing and field studies show that propylitic, argillic, alunite- Pyrophyllite and sericite alterations have occurred in this area. On the basis of statistical correlations elements categorized into three groups: (1) Cu-Ag, (2) As-Sb-S-Au and (3) Pb-Zn-Fe. The maximum anomalies in this region are copper (67800 ppm), silver (18 ppm) and gold (1098 ppm). Opaque mineral assemblage includes pyrite, chalcopyrite, borneite, malachite, azurite, chalcocite, pure copper and to a lesser amounts of covolite. Based on the basic characteristics of Samanloo deposit including the host rocks, texture and structure, mineralogy and alteration, it can be said that the search for the ore-bearing unit (megaporphite andesite units) can lead to the discovery of new copper deposits of Manto-type Cu deposit in the west of Sabalan mountain.

Keywords

Main Subjects