Analcite (white and yellow brown areas) w/ Aegerine (black crystals) from Carrieres Desourdy, Mont St. Hiliare, Rouville, Co., Quebec, Canada. 7.5 cm (3" wide) x 6.5 cm (2-1/2" deep) x 3 cm (1-1/4" thick)
ANALCIME-Analcite - NaAlSi2O6. H2O (Zeolite Group) Hydrated sodium aluminum silicate. Usally seen as trapezohedral crystals. This is the massive form. Color: white to colorless and also pink or yellow.