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Spinel

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SHS39822

Spinel

ex. Bart Cannon (Seattle/Washington)

Description Tabs

Description
Locality: 
Crazy Sphinx Claim, Helena, Lewis & Clark County, Montana, United States of America
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.4 × 3.2 × 2.6 cm
Largest Crystal: 
0.70cm
Description

Blue spinel crystal in matrix

Mineral Data
What's on the rock

Spinel

Formula: 
MgAl2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
7.5 - 8.0