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Stilbite

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ZLT129779

Stilbite

Classic Locality

Description Tabs

Description
Locality: 
Rauðafell, Berufjord, Djúpavogshreppur, Eastern Region, Iceland
Size Range: 
Thumbnail (1-3cm)
Size: 
2.2 × 2.5 × 2 cm
Description

Sculpural cluster of 3 pointed stilbite crystals. Found as a floater in the gravel of Kaldilaekur in 1974. Exceptional tumbnail specimen.

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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