Talnakhite
A variety of Minerals
What is Talnakhite?
Talnakhite is a mineral of chalcopyrite group with formula: Cu9(Fe, Ni)8S16. It was named after the Talnakh ore deposit, near Norilsk in Western Siberia, Russia where it was discovered as reported in 1963 by I. Budko and E. Kulagov. It was officially named "talnakhite" in 1968. Despite the initial announcement it turned out to be not a face centered high-temperature polymorph of chalcopyrite, but to have composition Cu18(Fe, Ni)18S32. At 80 °C (176 °F) to 100 °C (212 °F) it decomposes to tetragonal cubanite plus bornite.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Talnakhite 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.
Talnakhite Localities Map
See where Talnakhite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
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Quick Facts
Physical Properties
- Color
- Brass-yellow, tarnishes to pink or brown tints, then iridescent
Chemical Properties
- Chemical Formula
- Cu9(Fe,Ni)8S16
- Elements
- Cu, Fe, Ni, S
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Talnakhite FAQs
How do I identify Talnakhite?
Talnakhite can be identified by its Brass-yellow color. Look for these key characteristics when examining specimens.
What color is Talnakhite?
Talnakhite typically appears in Brass-yellow, tarnishes to pink or brown tints, then iridescent. Color can vary depending on impurities and formation conditions.
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