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Prehnite & Calcite

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RAF207534

Prehnite & Calcite

Gem Crystal

Description Tabs

Description
Locality: 
Brandberg, Dâures, Erongo Region, Namibia
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.5 × 7 × 2.5 cm
Largest Crystal: 
9.50cm
Description

Nice hand size fitting specimen of lustrous green prehnite with calcite. Gemmy cubic calcite crystals on one side of this specimen, while on the other side shows off micro calcite crystals! Came out from Brandberg, Namibia.....A gem of a specimen....

Weight: 161gr

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

Calcite

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