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Ardennite-(As)

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RSL709976

Ardennite-(As)

Classic Locality

Description Tabs

Description
Locality: 
Salmchâteau, Vielsalm, Luxembourg Province, Belgium
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.8 × 3.5 × 2.3 cm
Description

Specimen of ardennite-(As), a rare silicate arsenate of manganese and aluminum, which has the type locality in this Belgian town. Formed by aggregates in parallel growth of prismatic flattened crystals, intense color between orange to yellow and luster. They are included in a quartz matrix. Collect samples is currently prohibited and specimens are very difficult to find (I know it). From the collection of P. Van Hee (collected ±1960-65).

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