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Barrerite

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QRI640953

Barrerite

Former Bruno Cerato stock
Classic Locality

Description Tabs

Description
Locality: 
Kuiu Island, Sitka Borough, Alaska, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
3.9 × 4.5 × 1.4 cm
Largest Crystal: 
0.70cm
Weight: 
22.00gr
Description

Drusy with white tabula crystals of barrerite on thin matrix. The crystals are white, with good pearl lustre and locally partial transparency.
A representative specimen of this very rare zeolite from one of its best occurrences.

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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