A large cabinet specimen with a large open vuf filled with zeolites, including the 4cm wide Natrolite spray in the corner. Associated are fine, white crystals of Analcime (to 1.6cm) and pink crystals of Chabazite (6mm). Sawed flat base and backside.
Natrolite
Formula
Na2(Si3Al2)O10·2H2O
Crystal System
Orthorhombic
Crystal Habit
Acicular, Prismatic, Nodular
Cleavage
Perfect, Imperfect, None
Luster
Vitreous - Silky
Color
white, colorless, red, yellowish white, reddish white