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Stilbite Psm Natrolite

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SCH109998

Stilbite Psm Natrolite

Description Tabs

Description
Locality: 
Dean Quarry, St Keverne, Cornwall, United Kingdom
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 2.4 × 2.5 cm
Description

Hollow tubular stilbite epimorphs after natrolite and set on quartz.

 

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

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany
schani

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