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Dawsonite & Dolomite

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MNR683384

Dawsonite & Dolomite

ex. Rudolf Ďuďa collection
Classic Locality

Description Tabs

Description
Locality: 
Kladno District, Central Bohemian Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.2 × 3.4 × 3 cm
Description

Unique sample with white radial aggregate of dawsonite and brownish sphaerical crystals of dolomite. Showy piece, much better in person.

Ex. Rudolf Ďuďa collection

Mineral Data
What's on the rock

Dawsonite

Formula: 
NaAlCO3(OH)2
Strunz: 
5.BB.10
Crystal System: 
Orthorhombic
Hardness: 
3.0
Streak: 
White
Type Locality: 
McGill University campus, Montréal, Québec, Canada

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White