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Prehnite On Quartz & Hematite Inclusions

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CLB215397

Prehnite On Quartz & Hematite Inclusions

Description Tabs

Description
Locality: 
Goboboseb Mountains, Brandberg, Dâures, Erongo Region, Namibia
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 5.1 × 3.9 cm
Largest Crystal: 
3.20cm
Description

New find of exceptional apple-green prehnite crystal sheaves, perched on quartz crystals. This specimen shows a spectacular example of very beautifully colored prehnite right on the tip of a quartz crystal (in the right light you can see a hint of amethyst color). Other quartz crystals show brown inclusions of very thin, translucent and transparent hematite (I wouldn't be surprised if it was brookite in fact).

Mineral Data
What's on the rock

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Hematite

Formula: 
Fe2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0

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