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Aquamarine & Cordierite

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CLB557411

Aquamarine & Cordierite

Classic Locality

Description Tabs

Description
Locality: 
Bondasca Valley, Bregaglia Valley, Maloja Region, Grisons, Switzerland
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.2 × 4.2 × 3.2 cm
Largest Crystal: 
1.70cm
Description

Very rare, well-colored, little greenish-blue colored, rather clear aquamarine crystals (one measures 1.7 cm) with grayish cordierite crystals on a feldspar-quartz-muscovite matrix.

The big aquamarine crystal is healed and bent, no termination on the surface. The cordierite crystals are more or less damaged and rather minor.

Still this is a very fine and attractive specimen from this very seldom offered locality.

Mineral Data
What's on the rock

Aquamarine

Variety Of: 

Beryl

Formula: 
Be3Al2(Si6O18)
Strunz: 
9.CJ.05
Hardness: 
7.5 - 8.0
Formula: 
Be3Al2Si6O18
Hardness: 
0.0
Colour: 
Blue
Streak: 
White

Cordierite

Formula: 
(Mg,Fe)2Al3(AlSi5O18)
Strunz: 
9.CJ.10
Crystal System: 
Orthorhombic
Hardness: 
7.0 - 7.5
Type Locality: 
Großer Arber, Bayerisch Eisenstein, Lower Bavaria, Bavaria, Germany

Seller Information

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