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Calcite & Prehnite

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CR166433

Calcite & Prehnite

Description Tabs

Description
Locality: 
Malad Quarry, Mumbai, Maharashtra, India
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.2 × 7 × 3.5 cm
Description

Sharp and gemmy calcite crystals on a bed of white and lustrous, gemmy quartz crystals. With light pale green globular prehnite crystals.

Ex Armin Wendland collection - acquired 1987

Mineral Data
What's on the rock

Calcite

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

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