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Sanidine

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WND829346

Sanidine

Gem Crystal

Description Tabs

Description
Locality: 
Itrongay, Mahasoa Est, Betroka, Anosy, Madagascar
Class: 
Single Crystal
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.3 × 2.6 × 2.2 cm
Description

You are bidding on a well defined, sharp, lustrous and partially gemmy crystal of light canary-yellow Sanidine. This is fine but not complete gem crystal of a very common species that is very rarely seen in gem quality crystals: Sanidine is a Potassium Feldspar that is found in various localities around the world, but gem quality material is scarce, especially in larger pieces. Recent analysis has shown that many of the famous yellow "Orthoclase" stones from the classic locality of Itrongay in Madagascar are actually some of the finest gem sanidines extant

 

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
Wendel Minerals

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