Heavy metal minerals. Historical artwork of some of the minerals of lead,chromium and antimony,as found in 19th-century mines. The minerals are: galena (lead sulphide,PbS,upper left); crocoite (lead chromate,PbCrO4,upper right); pyromorphite (lead chloride phosphate,Pb5Cl(PO4)3,centre),cerussite (lead carbonate,PbCO3,lower left); and stibnite (antimony sulphide,Sb2S3,lower right). The specimens were mined in: Freiberg,Germany (galena); Siberia,Russia (crocoite),Hofsgrund,Germany (pyromorphite),Leadhills,Scotland (cerussite) and Felsobanya,Hungary (stibnite). Artwork from Mines and Miners (L. Simonin,1868) |