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Bertrandite Smoky Quartz & Rhodochrosite

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CAM540747

Bertrandite Smoky Quartz & Rhodochrosite

Classic Locality

Description Tabs

Description
Locality: 
Kara Oba, Karaganda Oblast, Kazakhstan
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.2 × 5 × 3.4 cm
Description

An excellent and very showy piece from Kara Oba with a rich coverage of fanlike groups of white lath-like crystals of bertrandite to 5 mm long together with small rhodochrosite crystals on a matrix of smoky quartz crystals up to 3 cm.

A great and nowadays hard to find specimen, from my own collection.

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

Smoky Quartz

Variety Of: 

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Hardness: 
7.0
Formula: 
SiO2
Hardness: 
0.0

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
Cartils Minerals

Seller Information

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