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Sanidine

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NST610043

Sanidine

Type Locality

Description Tabs

Description
Locality: 
Drachenfels, Königswinter, Siebengebirge, North Rhine - Westphalia, Germany
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.5 × 4 × 3.5 cm
Largest Crystal: 
2.30cm
Description

Tabular karlsbad twinned sanidine from the type locality embedded in trachyte matrix. The site is under natural protection since 1956.

Mineral Data
What's on the rock

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