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Staurolite

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MGR1074996

Staurolite

Classic Locality

Description Tabs

Description
Locality: 
Pestsovye Keivy, Keivy Mountains, Murmansk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 4.1 × 1.6 cm
Description

Twinned staurolite from the locality became very rare and hard to obtain. Here we have a well shaped, partly even glossy twin in the center of light shists matrix. No significant damage to report.

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