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vasemineraal vasksulfiid (Cu2S) või seda mineraali sisaldav, enimkasutatav, vasemaak, a greyish-black copper sulphide (Cu2S), a major ore of copper
chalcocite . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/chalcocite/1/eng (13.07.2026)
