mottramite
/ˈmɒtrəmʌɪt/Mineralogy
noun
An orthorhombic basic vanadate of lead, copper, and zinc occurring as green or brownish blades or black encrustations and forming a series with descloizite.
Origin
Late 19th century; earliest use found in Henry Roscoe (1833–1915), chemist and university administrator. From the name of Mottram St Andrew, a town in Cheshire + -ite.