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Stilbite

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MGR812268

Stilbite

Classic Locality

Description Tabs

Description
Locality: 
Teigarhorn, Berufjord, Djúpavogshreppur, Eastern Region, Iceland
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10.6 × 9.3 × 6.2 cm
Description

Lustrous, isolated stilbite crystals (up to 42mm !!!) perched on matrix. Such exposed free-standing crystals are really exceptional! Minerals from Iceland are generally very rare and this one is even on very high quality, shows excellent contrast and an eye-catching assemble. A master-piece for entire Iceland! No significant damages to report.

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