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Corundum

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HCH521894

Corundum

Description Tabs

Description
Locality: 
Philipsburg District, Granite County, Montana, United States of America
Class: 
Mixed Specimens
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4 × 2 × 2 cm
Largest Crystal: 
0.20cm
Description

A 4 cm high glass full of grains of mixed coloured Corundum up to 2mm diameter.

Mineral Data
What's on the rock

Corundum

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

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