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Stilbite

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CAM162973

Stilbite

Ex Klaus Petitjean collection
Classic Locality

Description Tabs

Description
Locality: 
Helgustadir Mine, Reydarfjörđur, Fjarðabyggð, Reydarfjördur, Eastern Region, Iceland
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.3 × 4 × 3 cm
Largest Crystal: 
1.50cm
Description

A very fine and aesthetical specimen from Iceland with several clusters of stilbite crystals on a small amount of matrix. Collected in 1975.

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
Cartils Minerals

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