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Datolite & Prehnite

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Datolite & Prehnite

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Description Tabs

Description
Locality: 
Imilchil, Errachidia Province, Drâa-Tafilalet Region, Morocco
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12 × 7 × 2.7 cm
Largest Crystal: 
1.60cm
Description

Very interesting specimen of several, well formed Datolite crystal with nice lustre on Prehnite crystals which completely covered the host rock. One of very first Datolite specimen from Morocco. Ex Spirifer Minerals specimen.

Mineral Data
What's on the rock

Datolite

Formula: 
Ca(HBSiO5)
Strunz: 
9.AJ.20
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Nødebro Mine (Nøddebro), Arendal Iron Mines, Arendal, Aust-Agder, Norway

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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