- malladrite
- \\məˈläˌdrīt, ˈmaləˌd-\ noun
(-s)
Etymology: Italian, from Alessandro Malladra died 1944 Italian geologist + Italian -ite: a sodium fluosilicate Na2SiF6 occurring in minute hexagonal crystals in fumaroles in the crater of Vesuvius near Naples in Italy
Useful english dictionary. 2012.