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Tunisite & Calcite

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Tunisite & Calcite

Description Tabs

Description
Locality: 
Condorcet, Drôme, Auvergne-Rhône-Alpes, France
Class: 
Crystal Group/Cluster
Size Range: 
Micromount (under 1cm)
Size: 
0.9 × 0.3 × 0.2 cm
Description

a cluster of tunisite crystals with calcite

Mineral Data
What's on the rock

Tunisite

Formula: 
NaCa2Al4(CO3)4(OH)8Cl
Strunz: 
5.BB.15
Hardness: 
0.0
Type Locality: 
Sidi Youssef Mine, Sakiet Sidi Youssef (Saqiyat Sidi Yusuf), Al Kåf Governorate (El Kef; Le Kef), Tunisia

Calcite

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