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Sanidine

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PFK649712

Sanidine

Floater

Description Tabs

Description
Locality: 
Kakourou, Aridhaia, Pélla, Central Macedonia, Greece
Class: 
Crystal Group/Cluster
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.3 × 2.1 × 1.5 cm
Description

If you like crystallography, this piece is a lesson itself. The whole specimen is a floater and is composed of a main, perfect carlsbad twin pierced by a baveno twin. So we have two of the three twinnings of feldspar in one specimen that is an undamaged floater!

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

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