User:Beancounter603/Barrerite

Barrerite is a Tectosilicate mineral and a member of the Zeolite family. It is one of the rarer zeolites and found only at Rocky Pass, Kuiu Island, Alaska. It was named for Richard Maling Barrer (1910- ), a British teacher born in New Zealand

Barrerite crystal are white to pinkish, with a vitreous-glassy luster. The crystal system is Orthorhombic and is flat and tabular in appearance. It has a Mohs hardness of 3 to 4 and its cleavage is perfect. Barrerite has a white streak and a density of 2.13. The crystal are found on only one place on earth in crystal fissures on Kuiu Island, off the coast of Alaska.

References http://www.mindat.org/min-536.html http://webmineral.com/data/Barrerite.shtml