Berzelianite
A variety of Minerals
What is Berzelianite?
Berzelianite is a rare copper selenide mineral with the formula Cu2Se. It occurs as thin dendritic crusts or as fine-grained inclusions. It crystallizes in the isometric system, unlike its dimorph, bellidoite, which crystallizes in the tetragonal system. The crystals are opaque and slightly malleable.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Berzelianite 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.
Berzelianite Localities Map
See where Berzelianite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Silver-White, shiny lead-grey; easily tarnishes iridescent blue-grey
- Hardness (Mohs)
- 2
- Density
- 7.28 g/cm³
- Streak
- Shining
Chemical Properties
- Chemical Formula
- Cu2Se
- Elements
- Cu, Se
Also Known As
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Berzelianite FAQs
How do I identify Berzelianite?
Berzelianite can be identified by its hardness of 2 on the Mohs scale, Silver-White color. Look for these key characteristics when examining specimens.
What color is Berzelianite?
Berzelianite typically appears in Silver-White, shiny lead-grey; easily tarnishes iridescent blue-grey. Color can vary depending on impurities and formation conditions.
How hard is Berzelianite?
Berzelianite has a hardness of 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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