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Staurolite

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MGR798939

Staurolite

Classic Locality

Description Tabs

Description
Locality: 
Pestsovye Keivy, Keivy Mountains, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 7.7 × 4.3 cm
Description

Crossed sharp, dark staurolite crystals set on light matrix. Really a fine sample from this famous classic locality, which produced the very best crystals of staurolite world-wide.

Mineral Data
What's on the rock

Staurolite

Formula: 
Fe2+2Al9O6(SiO4)4(O,OH)2
Strunz: 
9.AF.30
Crystal System: 
‎Monoclinic
Hardness: 
7.0 - 7.5
Colour: 
Brown