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Calcite On Quartz

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CLB507589

Calcite On Quartz

ex collection Christian Bracke
Classic Locality

Description Tabs

Description
Locality: 
Iraí, Rio Grande do Sul, Brazil
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
12.6 × 10.7 × 4.9 cm
Largest Crystal: 
6.90cm
Description

Three very fine, large double-terminated calcite crystals up to 6.9 cm + three 'normal' ones on a thin sheet of quartz. An excellent specimen from Christian Bracke's collection.

Mineral Data
What's on the rock

Calcite

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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