Element Distribution Patterns and Precious Element and Base Metal Potential Around the Cinnabar Deposits of Lâdik-Sızma (Konya): A Geochemical and Statistical Approach
Abstract: Lâdik-Sızma region is a currently inactive Hg province which, when in operation, met a third of all mercury production of Turkey. Stibnite is usually present in all the mercury occurrences of the region which are also locally accompanied by Cu and Pb-Zn enrichments. The mineralization is in the form of patches and veinlets and occurs along usually faulted and brecciated carbonaceousrock and phyllite contacts. The present work is based on a stream sediment sampling program in the vicinity of the Hg occurrencesand tries to evaluate Au, Ag and base metal potential in their peripheries. Gold concentrations are always below detection limit but,although erratic, Ag produced concentrations as high as 39 ppm. The distribution of high Ag concentrations points out three anomalous locations; two of these are likely to be resulted from known Hg occurrences whilst the third one, 2 km to the northwest of Sızma,is from an area of highly altered limestone but with no reported mineralization. To interpret the data a five factor model is used inthis study which produced reliable results. Factor 1 accounts for Cu enrichment and associated hydrothermal alteration, especiallyoxidation, characterized by high factor loadings for Cu and Fe (0.807 and 0.846 respectively). Factors 2 and 5 point out the lithological effects of phyllite, schist and metaporphyry, and carbonate rocks respectively. Factor 3 is the indication of Pb-Zn enrichments whilst factor 4 corresponds to Sb and As-enriched zones. The contour plots of factor scores for factors 1, 3 and 4 indicate thatfinding new Hg±Sb occurrences is unlikely and that the new projects should be concentrated on Pb-Zn and Cu prospection.