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Sanidine

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PFK654646

Sanidine

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Description
Locality: 
Kakourou, Aridhaia, Pélla, Central Macedonia, Greece
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
2.7 × 2.1 × 1 cm
Description

Superb, textbook Carlsbad twin of sanidine. The piece is quite sharper than most we have seen from the locality. An item I would certainly bring to a crystallography lecture.

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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