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Jamesonite & Dawsonite

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MNR577551

Jamesonite & Dawsonite

Description Tabs

Description
Locality: 
Kladno District, Central Bohemian Region, Czech Republic
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 4.6 × 3.2 cm
Description

Unique sample with unusual minerals association. Sample presents white radial aggregate of dawsonite and acicular jamesonite crystals.Showy piece, much better in person.

Ex. Rudolf Ďuďa collection

Mineral Data
What's on the rock

Jamesonite

Formula: 
Pb4FeSb6S14
Strunz: 
2.HB.15
Crystal System: 
Monoclinic
Hardness: 
2.5
Type Locality: 
Cornwall, England, UK

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