lāˈvēˌnīt noun
or le·vyne lāˈvēn
( -s )
Etymology: levynite from levyne (irregular from Armand Lévy died 1841 French mineralogist + English -ine ) + -ite
: a white or light-colored mineral NaCa 3 Al 7 Si 11 O 36 .15H 2 O that occurs in rhombohedral crystals and is a hydrous calcium aluminum silicate