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Biotite & Sanidine

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MEX594947

Biotite & Sanidine

Classic Locality

Description Tabs

Description
Locality: 
Wannenköpfe Quarry, Ochtendung, Maifeld, Mayen-Koblenz, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.3 × 1.2 cm
Description

Very nice, transparent brown biotite group between colorless sanidine crystals. The specimen was found 18.09.1996.

Mineral Data
What's on the rock

Biotite

Group Parent: 
Mica Group

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
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