Apophyllite forms in clear, prismatic crystals that look like a stacks of glass. Green is the rarest color. It is found in volcanic regions and forms in caviti — Photo: Steve Jurvetson · CC BY 2.0
Zeolite
Also known as: Zeolite family.
The family of microporous aluminosilicates — molecular sieves that exchange ions and soften water.
Intro adapted from Wikipedia (CC BY-SA).
Zeolite is a mineral group, with the chemical formula Hydrated aluminosilicates·nH₂O.
It crystallizes in the orthorhombic crystal system.
Key properties: Mohs hardness 3.5–5.5; typically white or pink or colorless or yellow.
Collections: Collector Favorites.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet.
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