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Bertrandite Rhodochrosite Pyrite & Quartz

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KCM99461

Bertrandite Rhodochrosite Pyrite & Quartz

Description Tabs

Description
Locality: 
Kara Oba, Karaganda Oblast, Kazakhstan
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2.8 × 1.5 cm
Description

A slightly smoky quartz crystal is host to bertrandite, rhodochrosite and pyrite. Note that the bertrandite is both on and included within the quartz crystal!

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

Rhodochrosite

Formula: 
MnCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Cavnic Mine (Kapnikbánya), Cavnic (Kapnic; Kapnik), Maramureș Co., Romania

Pyrite

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

Quartz

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