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Kyanite & Fuchsite

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ARM741446

Kyanite & Fuchsite

collected in 2016

Description Tabs

Description
Locality: 
Borisovskie Sopki, Plast, Plastovsky District, Chelyabinsk Oblast, Russian Federation
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6 × 6.5 × 3 cm
Largest Crystal: 
2.30cm
Weight: 
166.00gr
Description

In the mid of endless wheat fields in south Ural Mountains there is an outcrop of highly metamorphic rocks with light green fuchsite schist rich in gem-quality kyanite crystals reaching to 5 cm in length. In transmissive light the kyanites are transparent in sections with a sapphire-blue color. Lamellar and V-shaped twins are common.

I collected this specimen joining a group of Russian geologists in summer 2016. I could take only few specimens of what I found due to strict regulations on exporting minerals. The kyanites in this specimen are in a nice contrast with the Cr-rich micaceous matrix.

Mineral Data
What's on the rock

Kyanite

Formula: 
Al2(SiO4)O
Strunz: 
9.AF.15
Crystal System: 
Triclinic Forms long bladed crystals.
Hardness: 
5.5 - 7.0
Streak: 
Colorless

Fuchsite

Variety Of: 

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Formula: 
K(Al,Cr)3Si3O10(OH)2
Hardness: 
0.0

Seller Information

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