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Corundum

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GEM606382

Corundum

Rare Mineral

Description Tabs

Description
Locality: 
Graphite Quarry, Amstall, Krems-Land District, Lower Austria, Austria
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 3 × 1.6 cm
Largest Crystal: 
1.30cm
Description

Two crystals of corundum are situated in a graphite matrix. The bigger one is about 1.3 cm, which is very remarkable for this Austrian location. The specimen is in good condition.

Mineral Data
What's on the rock

Corundum

Formula: 
Al2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
9.0
Streak: 
White
Gerald Minerals