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Sellaite

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SKY661491

Sellaite

Classic Locality

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Description
Locality: 
Emmelberg, Üdersdorf, Daun, Eifel, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.3 × 1.3 × 1 cm
Description

Perfectly developed white crystal of the very rare sellaite (MgF2), from the famous Eifel localities. Associated minerals are hematite and sanidine .

It is probably a sellaite after an unknown pseudomorph. Not analyzed specimen.

Outstanding under the microscope !

 

Mineral Data
What's on the rock

Sellaite

Formula: 
MgF2
Strunz: 
3.AB.15
Crystal System: 
Tetragonal
Hardness: 
5.0 - 5.5
Streak: 
White
Type Locality: 
Gébroulaz glacier, Val Thorens, Savoie, Rhône-Alpes, France

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