pharmacolite
/ˈfɑːməkəlʌɪt/Mineralogy
noun
A mineral of the monoclinic crystal system consisting of a hydrated calcium arsenate, CaHAsO4.2H2O, and usually occurring as white or greyish silky fibres.
- magnesian pharmacolite noun Obsolete. = berzeliite..
Origin
Early 19th century. From pharmaco- + -lite, after German Pharmakolith.