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Barrerite

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WND858294

Barrerite

Rare Mineral

Description Tabs

Description
Locality: 
Wolf No #1 Claim, Rocky Pass, Kuiu Island, Sitka, Alaska, United States of America
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 7.6 × 3.3 cm
Description

This is a superfine specimen of Barrerite as well developed, sharp crystals on matrix.They are highly lustrous, lucent and almost excellent tapered terminated. Barrerite is a rare zeolite species related to stilbite, but found in just a few localities and not nearly as common. And this is a super cabinet sized specimen with large crystals,- not a chopped up crumb as usual handled with such rare species.

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...
Wendel Minerals

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