Daubréelite
A variety of Linnaeite Subgroup
What is Daubréelite?
Daubréelite is a rare sulfide mineral. It crystallizes with cubic symmetry and has chemical composition of FeCr2S4. It usually occurs as black platy aggregates.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Daubréelite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Quick Facts
Physical Properties
- Color
- Black
- Hardness (Mohs)
- 4.5 - 5
- Rock tumbling
- Not recommended
- Density
- 3.842 g/cm³
- Streak
- Black, brown
Chemical Properties
- Chemical Formula
- Fe2+Cr3+2S4
- Elements
- Cr, Fe, S
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Daubréelite FAQs
How do I identify Daubréelite?
Daubréelite can be identified by its hardness of 4.5 - 5 on the Mohs scale, Black color. Look for these key characteristics when examining specimens.
What color is Daubréelite?
Daubréelite typically appears in Black. Color can vary depending on impurities and formation conditions.
How hard is Daubréelite?
Daubréelite has a hardness of 4.5 - 5 on the Mohs scale. This gives it moderate hardness.
