Barrerite
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Barrerite is a tectosilicate mineral and a member of the zeolite family. It is one of the rarer zeolites. It was named for Richard Barrer, a New Zealand-born chemist.
Barrerite from Kuiu Island, Alaska, USA.
Zeolite
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Zeolites are a group of several microporous, crystalline aluminosilicate minerals commonly used as commercial adsorbents and catalysts. They mainly consist of silicon, aluminium, and oxygen, and have
Natrolite needles from Hohentwiel (Typelocality)
Zeolite exhibited in the Estonian Museum of Natural History
Natrolite from Poland
Synthetic zeolite