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Gyrolite & Natrolite

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CR31195

Gyrolite & Natrolite

Description Tabs

Description
Locality: 
Ljósá, Eysturoy Island, Faroe Islands, Denmark
Size Range: 
Cabinet (10-18 cm)
Size: 
12 × 8.5 × 2.5 cm
Description

Snowwhite balls of gyrolite with silky white natrolite from an older collection.

Collected 1984

Mineral Data
What's on the rock

Gyrolite

Formula: 
NaCa16Si23AlO60(OH)8·14H2O
Strunz: 
9.EE.30
Hardness: 
2.5
Streak: 
White
Type Locality: 
The Storr, Portree, Trotternish, Isle of Skye, North West Highlands (Inverness-shire), Scotland, UK

Natrolite

Formula: 
Na2Al2Si3O10·2H2O
Strunz: 
9.GA.05
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Hohentwiel, Singen, Hegau, Baden-Württemberg, Germany