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Okenite Gyrolite & Prehnite

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SHW59541

Okenite Gyrolite & Prehnite

Description Tabs

Description
Locality: 
Malad Quarry, Mumbai, Maharashtra, India
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 3.5 × 3 cm
Largest Crystal: 
1.80cm
Description

Ball of okenite with small gyrolite balls on the matrix of prehnite.

Mineral Data
What's on the rock

Okenite

Formula: 
CaSi2O5·2H2O
Strunz: 
9.EA.40
Hardness: 
4.5 - 5.0
Type Locality: 
Qutdligssat (Kudlisat), Qeqertarsuaq Island (Disko Island), Qaasuitsup, Greenland

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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