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Graphite & Prehnite

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SHS964759

Graphite & Prehnite

Description Tabs

Description
Locality: 
Merelani Hills, Arusha Region, Tanzania (United Republic)
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 2.4 × 2.4 cm
Description

Graphite in prehnite

Mineral Data
What's on the rock

Graphite

Formula: 
C
Strunz: 
1.CB.05a
Crystal System: 
Hexagonal
Hardness: 
1.0 - 2.0

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