Assertion: lead ore | /r/HasProperty | pbco
Facets:
Source sentences:
text: Most other lead minerals are related to galena in some way; boulangerite, Pb 5 Sb 4 S 11 , is a mixed sulfide derived from galena; anglesite, PbSO 4 , is a product of galena oxidation; and cerussite or white lead ore, PbCO 3 , is a decomposition product of galena.