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Analcime & Prehnite

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RBR116534

Analcime & Prehnite

Description Tabs

Description
Locality: 
Tafelkop, Goboboseb, Brandberg, Dâures, Erongo Region, Namibia
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 6 × 4 cm
Description

White to translucent analcime crystals up to 1cm across resting on a green prehnite-sphere. Please note, that this is an exceptional rarity for this locality. And it is well developed and undamaged.

Mineral Data
What's on the rock

Analcime

Formula: 
Na2(Al2Si4O12)·2H2O
Strunz: 
9.GB.05
Crystal System: 
Triclinic
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Cyclopean Islands, Acitrezza (Aci Trezza), Etna Volcanic Complex, Catania Province, Sicily, Italy

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

Seller Information

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