Mineralogical study of archaeological copper slags found in the area of Krushevets Village, SE Bulgaria

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creativework.keywordsArchaeological copper slags, Old copper mining, SE Bulgaria, SEM CDD-EDS, X-ray powder diffraction
creativework.publisherGeological Institute “Strashimir Dimitrov”, Bulgarian Academy of Sciencesen
dc.contributor.authorTzankova N.
dc.contributor.authorStavrakeva D.
dc.date.accessioned2024-07-10T14:27:05Z
dc.date.accessioned2024-07-10T14:50:06Z
dc.date.available2024-07-10T14:27:05Z
dc.date.available2024-07-10T14:50:06Z
dc.date.issued2020-08-01
dc.description.abstractIn this article, we present the results of our study on archaeological slags found near the village of Krushevets, Southeast Bulgaria. Chemical analyses of the slags show a high Fe2O3(40.11-54.57%) and SiO2(29.32-42.28%) content, increased CaO content (3.01-6.51%), as well as very low quantity of SO3(from 0.20% to 0.52%) and P2O5(between 0.23% and 0.30%). The unbound residual copper in the samples is in an amount of 0.41% to 1.07%. The main phases composition of the slags are as follows: fayalite-type silicate phases with impurities, kirschsteinite and laihunite; pyroxenes of the augite-type and amorphous hosted glass; iron-oxide phases (magnetite and maghemite); and copper-containing phases (drops of unbound copper, relicts of ore minerals such as bornite, chalcopyrite), as well as newly formed phases, such as chalcocite, and copper-containing spherical aggregates. The studied samples are a by-product of copper extraction metallurgical activity. The raw material used was of copper-sulfide type with impurities of manganese-, calcium-, magnesium- and aluminium-containing minerals.
dc.identifier.doi10.52321/GeolBalc.49.2.3
dc.identifier.issn2535-1060
dc.identifier.issn0324-0894
dc.identifier.scopusSCOPUS_ID:85125877459en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/702
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85125877459&origin=inward
dc.titleMineralogical study of archaeological copper slags found in the area of Krushevets Village, SE Bulgaria
dc.typeArticle
oaire.citation.issue2
oaire.citation.volume49
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