A nice presentation of lustrous white analcime crystals to 16 mm, intergrowing with albite and black crystals of aegirine from the famous Mont Saint-Hilaire, Canada. The analcime crystals grow one atop another. They are complete all over, sharp and well crystallized with porcelain faces. Elongated black aegirine blades penetrate in the analcime. It displays attractively all over 360 degree. For references see the 1990 issue of The Mineralogical Record vol. 21, # 4. In very good condition - some small contacts. On acrylic base.

Splendid!