leucophanite
noun
leu·coph·a·nite
lüˈkäfəˌnīt
variants or less commonly leucophane
ˈlükəˌfān
plural -s
: a mineral (Na, Ca)2BeSi2(O, F, OH)7 consisting of a beryllium sodium calcium silicate with fluorine occurring in glassy greenish tabular crystals
Word History
Etymology
leucophanite from leucophane (from Swedish leukophan, from leuk- leuc- + -phan -phane) + -ite