noun
definition
A yellowish-green mineral, a mixed phosphate and chloride of lead with the chemical formula Pb5(PO4)3Cl, that is sometimes mined as an ore.
Examples of pyromorphite in a Sentence
The chief lead ores are galena and cerussite; of minor importance are anglesite, pyromorphite and mimetesite (qq.v.).
Of other lead minerals we may mention the basic sulphate lanarkite, PbO PbSO 4; leadhillite, PbSO 4.3PbCO 3; the basic chlorides matlockite, PbO PbC12j and mendipite, PbC1 2.2PbO; the chloro-phosphate pyromorphite, PbC12.3Pb3(P04)2, the chloro-arsenate mimetesite, PbC12.3Pb3(As04)2; the molybdate wulfenite, PbMoO 4; the chromate crocoite or crocoisite, PbCrO 4; the tungstate stolzite, PbW04.
Small amounts of the lead-bearing species cerussite, pyromorphite, mottramite and vanadinite were also identified.