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Quartz With Prehnite

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RAF652868

Quartz With Prehnite

Description Tabs

Description
Locality: 
Brandberg, Dâures, Erongo Region, Namibia
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 2 × 1.2 cm
Largest Crystal: 
4.50cm
Weight: 
14.00gr
Description

A fine specimen of Quarts Covered with Prehnite. Semi-transluscent quartz crystal from Brandberg. Nice crystals.  It is very scarce to fine a quartz crystal with such a good groth of prehnite

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