gonnardite

noun
gon·nard·ite | \ ˈgänə(r)ˌdīt \
plural -s

Definition of gonnardite 

: a mineral approximately Na2CaAl4Si6O20.7H2O consisting of a zeolite and occurring in radiating spherules (specific gravity 2.3)

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History and Etymology for gonnardite

French gonnardite, from Ferdinand Gonnard, 19th century French mineralogist + French -ite

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