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Phaunouxite & Rauenthalite

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CHA564408

Phaunouxite & Rauenthalite

Rare Mineral

Description Tabs

Description
Locality: 
Giftgrube Mine, Neuenberg, Ste Marie-aux-Mines, Haut-Rhin, Grand Est, France
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.4 × 1.4 cm
Description

specimen with some tufts of white needles or aggregate of the rare phaunouxite and rauenthalite on matrix.

Raunthalite and phaunouxite are intimately associated. Form and colour are the same because rauenthalite had only one H2O molecule less due to dehydration.

Mineral Data
What's on the rock

Phaunouxite

Formula: 
Ca3(AsO4)2·11H2O
Strunz: 
8.CJ.40
Hardness: 
0.0
Type Locality: 
Gabe Gottes Mine (incl. Giftgrube), Neuenberg, Ste Marie-aux-Mines (Markirch), Haut-Rhin, Alsace, France

Rauenthalite

Formula: 
Ca3(AsO4)2·10H2O
Strunz: 
8.CJ.40
Hardness: 
2.0 - 0.0
Streak: 
Colorless
Type Locality: 
Gabe Gottes Mine (incl. Giftgrube), Neuenberg, Ste Marie-aux-Mines (Markirch), Haut-Rhin, Alsace, France

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