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Stilbite

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TPX543897

Stilbite

Classic Locality

Description Tabs

Description
Locality: 
Brufjördur, Múlasýsla, Eastern Region, Iceland
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 8.3 × 6 cm
Weight: 
432.00gr
Description

Spectacular group of stilbite crystals over basalt matrix from these old quarries from Iceland.

This big piece comes from an old collection and really is a Museum piece then nowaday is very difficult find a sample as this.

Mineral Data
What's on the rock

Stilbite

Synonym Of: 

Stilbite-Ca

Formula: 
NaCa4[Al9Si27O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0

Stilbite-Na

Formula: 
(Na,Ca,K)6-7[Al8Si28O72]·nH2O
Strunz: 
9.GE.10
Hardness: 
3.5 - 4.0
Hardness: 
3.5 - 4
Colour: 
White
Streak: 
White
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