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Stilbite

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RAF46333

Stilbite

Description Tabs

Description
Locality: 
Damaraland, Khorixas, Kunene Region, Namibia
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4.7 × 4.4 cm
Largest Crystal: 
2.00cm
Description

Stilbite crystals in the partial remains of a geode. A good example of the excellent stilbite crystals that come from the outcrops in the Grootberg area of Namibia.

#A1225

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