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Ardennite-(As)

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CHA524296

Ardennite-(As)

Classic Locality

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Description
Locality: 
Varenche Mine, Saint-Barthélemy, Nus, Aosta Valley, Italy
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.7 × 2.1 × 0.8 cm
Description

specimen with many groups of yellow-orange needles in matrix of this uncommon mineral

Mineral Data
What's on the rock

Ardennite-(As)

Formula: 
Mn2+4Al4(AlMg)(AsO4)(SiO4)2(Si3O10)(OH)6
Group Parent: 
Ardennite Group
Strunz: 
9.BJ.40
Hardness: 
6.0 - 7.0
Type Locality: 
Salmchâteau, Vielsalm, Stavelot Massif, Luxembourg Province, Belgium

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