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Prehnite

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CYF756421

Prehnite

Description Tabs

Description
Locality: 
Mullaley, Pottinger County, New South Wales, Australia
Class: 
Crystal Group/Cluster
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 5.5 × 4 cm
Description

This specimen is comprised of numerous botroydal Prehnite crystals which have grown in a stalagtitic style habit. Prehnites from this location vary in colour from White- colourless, yellow and even green. This piece is more toward the white-yellow colour with a good arrangement.

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