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Bertrandite & Pyrite

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ESM209855

Bertrandite & Pyrite

Description Tabs

Description
Locality: 
Kara Oba, Karaganda Oblast, Kazakhstan
Size Range: 
Small miniature (3-4.5 cm)
Size: 
1.9 × 3.1 × 2.4 cm
Description

Sprays of bertrandite blades, pyrite cube

Mineral Data
What's on the rock

Bertrandite

Formula: 
Be4(Si2O7)(OH)2
Strunz: 
9.BD.05
Crystal System: 
Orthorhombic
Hardness: 
6.0 - 7.0
Type Locality: 
Petit-Port, Nantes, Loire-Atlantique, Pays de Loire, France

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5