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Eskolaite

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JYJ772052

Eskolaite

Description Tabs

Description
Locality: 
Outokumpu, North Karelia, Finland
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
4.8 × 3.7 × 3.2 cm
Description

Black eskolaite in chalcopyrite-pentlandite and minor quartz. 

 

Mineral Data
What's on the rock

Eskolaite

Formula: 
Cr2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
8.0 - 8.5
Colour: 
Black
Streak: 
Green
Type Locality: 
Outokumpu Cu-Co-Zn-Ni-Ag-Au ore field, Eastern Finland Region, Finland
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