Roger Weller, geology instructor
email@example.com copyright 2010-R.Weller
Apophyllite is a member of the zeolite family of silicate minerals. It is a hydrous
calcium potassium fluorosilicate. Apophyllite is usually colorless or white and it
can form pointy 4-sided pyramid terminations on crystals or resemble cubes with
beveled corners and edges.
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Just credit photo to R.Weller/Cochise College.