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Prehnite Baryte Calcite Quartz & Sphalerite

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Prehnite Baryte Calcite Quartz & Sphalerite

Classic Locality

Description Tabs

Description
Locality: 
Brandberg, Dâures, Erongo Region, Namibia
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 6.7 × 4.6 cm
Largest Crystal: 
1.20cm
Weight: 
169.00gr
Description

A fabulous specimen of Prehnite, Baryte, Calcite, Quartz & Sphalerite crystals on matrix from Brandberg, Namibia. This specimen has a very nice variety of colors.  Has been trimmed at bottom.

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

Baryte

Formula: 
BaSO4
Strunz: 
7.AD.35
Hardness: 
3.0 - 3.5
Streak: 
White

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Quartz

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

Sphalerite

Formula: 
ZnS
Strunz: 
2.CB.05a
Crystal System: 
Isometric
Hardness: 
3.5 - 4.0

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$20
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