Eskolaite
A variety of Hematite Group
What is Eskolaite?
Eskolaite is a rare chromium oxide mineral (chromium(III) oxide Cr2O3).
Eskolaite Market Value Calculator
Estimate the market value of Eskolaite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Eskolaite Localities Map
See where Eskolaite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Formation of Eskolaite
It was first described in 1958 for an occurrence in the Outokumpu ore deposit of eastern Finland. It occurs in chromium bearing tremolite skarns, metamorphosed quartzites and chlorite bearing veins in Finland; in glacial boulder clays in Ireland and in stream pebbles in the Merume River of Guyana. It has also been recognized as a rare component in chondrite meteorites. The mineral is named after the Finnish geologist Pentti Eskola (1883–1964).
Quick Facts
Physical Properties
- Color
- Black
- Hardness (Mohs)
- 8 - 8.5
- Density
- 5.2 g/cm³
- Streak
- Green
Chemical Properties
- Chemical Formula
- Cr2O3
- Elements
- Cr, O
Identify Eskolaite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you