gonnardite
noun
gon·nard·ite
ˈgänə(r)ˌdīt
plural -s
: a mineral approximately Na2CaAl4Si6O20.7H2O consisting of a zeolite and occurring in radiating spherules (specific gravity 2.3)
Word History
Etymology
French gonnardite, from Ferdinand Gonnard, 19th century French mineralogist + French -ite