gmelinite
noun
gmelin·ite
-ˌnīt
plural -s
: a mineral (Na2,Ca)Al2Si4O12.6H2O consisting of a colorless or light-colored zeolite isomorphous with chabazite (hardness 4.5, specific gravity 2–2.2)
Word History
Etymology
Christian G. Gmelin †1860 German chemist + English -ite