Achavalite
A variety of Minerals
What is Achavalite?
Achávalite is a selenide mineral that is a member of the nickeline group. It has only been found in a single Argentinian mine system, being first discovered in 1939 in a selenide deposit. The type locality is Cacheuta mine, Sierra de Cacheuta, Mendoza, Argentina.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Achavalite 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.
Achavalite Localities Map
See where Achavalite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- dark grey
- Hardness (Mohs)
- 2.5
- Density
- 6.58 g/cm³
- Streak
- grey-black
Chemical Properties
- Chemical Formula
- FeSe Fe may be replaced by minor Cu.
- Elements
- Fe, Se
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Achavalite FAQs
How do I identify Achavalite?
Achavalite can be identified by its hardness of 2.5 on the Mohs scale, dark grey color. Look for these key characteristics when examining specimens.
What color is Achavalite?
Achavalite typically appears in dark grey. Color can vary depending on impurities and formation conditions.
How hard is Achavalite?
Achavalite has a hardness of 2.5 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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