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Prehnite On Amethyst

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Prehnite On Amethyst

Description Tabs

Description
Locality: 
Brandberg, Dâures, Erongo Region, Namibia
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 2 × 1.8 cm
Largest Crystal: 
4.40cm
Weight: 
16.00gr
Description

A quartz crystal with amethyst phantoms, and prehnite crystals attached to its surface.

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

Amethyst

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0
Colour: 
Purple