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Ardennite-(As) In Quartz

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PDM774253

Ardennite-(As) In Quartz

Type Locality

Description Tabs

Description
Locality: 
Vielsalm, Luxembourg Province, Belgium
Class: 
Crystals on Matrix
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.2 × 5.5 × 3.6 cm
Description

Interpenetrated crystals of straw-like orange-yellow ardennite-(As) in a quartz matrix. An old Belgian Classic, from the type locality, that is now protected and where collection is totally prohibited.

Acquired in 1992. Ex. PhD geologist Bob Janssens collection #1716.

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

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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