ˈgänə(r)ˌdīt noun
( -s )
Etymology: French gonnardite, from Ferdinand Gonnard, 19th century French mineralogist + French -ite
: a mineral approximately Na 2 CaAl 4 Si 6 O 20 .7H 2 O consisting of a zeolite and occurring in radiating spherules (sp. gr. 2.3)