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Sellaite & Sanidine

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HCH118170

Sellaite & Sanidine

Description Tabs

Description
Locality: 
Wannenköpfe Quarry, Ochtendung, Maifeld, Mayen-Koblenz, Rhineland-Palatinate, Germany
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.5 × 1.5 cm
Largest Crystal: 
0.05cm
Description

Small white lath-like crystals of sellaite in parageneses of colourless sanidine and some pseudobrookite on a vulcanic xenolithe.

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

Sanidine

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Monoclinic - Prismatic
Hardness: 
6.0
Streak: 
White
Type Locality: 
Drachenfels, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany

Seller Information

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