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Montebrasite With Turquoise

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LGM207922

Montebrasite With Turquoise

Ex Dr. Krantz, Bonn, Germany
With Antique Label

Description Tabs

Description
Locality: 
Montebras Mines, Soumans, Creuse, Nouvelle-Aquitaine, France
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 3 × 2.5 cm
Description

Massive white montebrasite accompanied by turquoise-blue turquoise. A classic from the type locality "Montebras Mines, Montebras, Soumans, Dept. Creuse, France". Comes with printed Böhm & Wiedemann label. This company is known as early as 1875, when Franz Wiedemann was the sole proprietor.
In 1896 his son, Franz Jr., took over the business, and by 1928 it was under the management of Franz and Hans Wiedemann. "Kallait" is an old synonym for turquoise.
Weight: 36 grams

Mineral Data
What's on the rock

Montebrasite

Formula: 
LiAl(PO4)(OH)
Strunz: 
8.BB.05
Hardness: 
5.5 - 6.0
Streak: 
White
Type Locality: 
Montebras Mines, Montebras, Soumans, Creuse, Limousin, France

Turquoise

Formula: 
Cu(Al,Fe3+)6(PO4)4(OH)8·4H2O
Strunz: 
8.DD.15
Crystal System: 
Triclinic
Hardness: 
5.0 - 6.0

Seller Information

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