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Mordenite Gyrolite & Prehnite

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SLN182036

Mordenite Gyrolite & Prehnite

Description Tabs

Description
Locality: 
Wagholi Quarry, Pune, Maharashtra, India
Size Range: 
Small cabinet (7-10 cm)
Size: 
2.2 × 9.3 × 7 cm
Description

Nice specimen with a lot of acicular white mordenite crystals reunited in rounded aggregates in association with white gyrolite balls on matrix of pale green prehnite in balls

Mineral Data
What's on the rock

Mordenite

Formula: 
(Na2,Ca,K2)Al2Si10O24·7H2O
Strunz: 
9.GD.35
Hardness: 
3.0 - 4.0
Streak: 
White
Type Locality: 
Morden, Bay of Fundy, Kings Co., Nova Scotia, Canada

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

Prehnite

Formula: 
Ca2Al2Si3O10(OH)2
Strunz: 
9.DP.20
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Karoo dolerites, Cradock, Chris Hani District, Eastern Cape Province, South Africa

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