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Barrerite

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JWM1088378

Barrerite

Description Tabs

Description
Locality: 
Rocky Pass, Kuiu Island, Alaska, United States of America
Class: 
Crystal Group/Cluster
Size Range: 
Cabinet (10-18 cm)
Size: 
10.8 × 7.2 × 5 cm
Weight: 
208.00gr
Description

White to pinkish barrerite crystals with a vitreous glassy luster, on matrix.  The barrerite is a very rare zeolite mineral.  It is the rarest member of the zeolite family.  This specimen is from the finds in the late 1990s which set a new standard for the species.  

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Boxed with Label
Mineral Data
What's on the rock

Barrerite

Formula: 
(Na,K,Ca0.5)2[Al2Si7O18]·7H2O
Strunz: 
9.GE.15
Crystal System: 
Orthorhombic
Hardness: 
3.0 - 4.0
Streak: 
White
Type Locality: 
Sant' Efisio Tower, Nora, Pula, Cagliari Province, Sardinia, Italy...

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