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Comes
in a black felt-lined specimen box
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Hydrous calcium potassium fluorsilicate, often with a small amount of iron and nickel. Hardness 4-1/2 to 5. Water clear pyramid shaped crystals. Apophyllite is commonly found in cavities in basalt of volcanic rock, where it is associated with zeolites and prehnite. India. Nice clear pyramid shaped crystals. Every collection should include one of these beauties.
The name apophyllite refers to a specific group of phyllosilicates, a class of minerals that also includes the micas. The name apophyllite is derived from the Greek word "", meaning "it flakes off", a reference to this class's tendency to flake apart when heated, due to water loss. Apophyllites are popular as collector's minerals. Apophyllite can come in colors: white, colorless, yellow, green, brown, and violet, and variations of these colors.
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