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Stilbite

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MGR921891

Stilbite

Classic Locality

Description Tabs

Description
Locality: 
Berufjörður, Djúpavogshreppur, Eastern Region, Iceland
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 3.6 × 3 cm
Description

Awesome matrix specimen of bright white stilbite from Iceland. The hundrets of tiny crystal faces are highly lustrous and the contrast to the mazrix is great.

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