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Uvarovite Cobaltpentlandite & Chromian Diopside

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CLB548283

Uvarovite Cobaltpentlandite & Chromian Diopside

Type Locality

Description Tabs

Description
Locality: 
Outokumpu, North Karelia, Finland
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
8.5 × 4.5 × 4 cm
Description

Not a great specimen. The uvarovite shows no crystal surfaces. But the green chromian diopside has pretty nice crystals. Cobaltpentlandite (type locality) is present in coppery-golden aggregates.

Mineral Data
What's on the rock

Uvarovite

Formula: 
Ca3Cr2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Saranovskii Mine (Saranovskoe), Saranovskaya Village (Sarany), Gornozavodskii area, Permskaya Oblast', Middle Urals, Urals Region, Russia...

Cobaltpentlandite

Formula: 
(Co,Ni,Fe)9S8
Strunz: 
2.BB.15
Crystal System: 
Isometric
Hardness: 
4.0 - 4.5
Colour: 
Yellow
Type Locality: 
Varislahti deposit, Outokumpu Cu-Co-Zn-Ni-Ag-Au ore field, Eastern Finland Region, Finland

Chromian Diopside

Variety Of: 

Diopside

Formula: 
CaMgSi2O6
Strunz: 
9.DA.15
Hardness: 
5.5 - 6.5
Formula: 
(Ca,Cr)MgSi2O6
Hardness: 
0.0
Colour: 
Green

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