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Prehnite & Quartz

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RAF574692

Prehnite & Quartz

Description Tabs

Description
Locality: 
Zoetwater, Calvinia, Namakwa District, Northern Cape Province, South Africa
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8 × 7 × 6.5 cm
Largest Crystal: 
6.00cm
Weight: 
226.00gr
Description

An exquisite prehnite quartz specimen from Soetwater in Calvinia in Northern Cape, South Africa.

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