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Eskolaite

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SMM699999

Eskolaite

Rare Mineral

Description Tabs

Description
Locality: 
Clear Creek Claim, Goat Mountain, New Idria, San Benito County, California, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.7 × 1 × 1 cm
Description

Metallic-black eskolaite, a not spreed mineral. The chromium analogue of Corundum, Hematite, and Karelianite.  

Boxed with Label
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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