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Galena and Blende from the Madan mine in Bulgaria -Year 2010-
Galena chemical composition: PbS (lead sulfide)
Hardness: 2.5
Minerals: galena, blende.
Galena and Blende from the Madan mine in Bulgaria -Year 2010-
Galena chemical composition: PbS (lead sulfide)
Hardness: 2.5