( n. )
A rare zeolitic mineral occurring in white monoclinic crystals with pearly luster. It is a hydrous silicate of aluminia, baryta, and strontia.
( n. )
A rare zeolitic mineral occurring in white monoclinic crystals with pearly luster. It is a hydrous silicate of aluminia, baryta, and strontia.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012