Tzankova, N., D. Stavrakeva, P. Leshtakov, K. Dimitrov. 2016. Chemico-mineralogical characterization of ancient slags from Rosen Ore Field. Part 2 – Korucheshme and Rosen deposits, metallurgical center „Atiya“ – Univ. Min. Geol., 59, 1, Geol., 61-66 (in Bulgarian with English abstract).
ABSTRACT. The studied ancient slags are from several old metallurgical centers in Rosen orefield. The old copper mining process there is referred to the period 6th century B.C. – 4-5th century A.D. The chemical composition of the samples was studied using ICP-OES analyses. The slags have high Fe2O3 and SiO2 content. For the mineral composition studying, we used an optical microscope in transmitted and reflected light, X-ray powder diffraction аnd electron probe microanalyses. The slags are composed mainly of the following minerals: fayalite, magnetite, maghemite, wustite, kirschsteinite, etc. The presence of copper drops and copper-sulfide aggregates. The studied materials are by-products produced from the heat treatment of copper-iron sulfide ore for copper mining in ancient times.
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