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Eskolaite

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SER930699

Eskolaite

ex Americo Urbinati collection

Description Tabs

Description
Locality: 
Outokumpu, North Karelia, Finland
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1.5 × 1 cm
Description

black to dark green crystalline eskolaite

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