Kaňkite
A variety of Minerals
What is Kaňkite?
Kankite is a mineral with the chemical formula FeAsO4·3.5(H2O). Kankite is named for the locality that yielded first specimens Kaňk, Czech Republic. Kankite forms in old (1200- to 1400-year-old) mine dumps. It is yellowish-green on fresh exposure, with a paler greenish yellow on exposure to air.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Kaňkite 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.
Kaňkite Localities Map
See where Kaňkite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Hardness (Mohs)
- 2 - 3
Chemical Properties
- Chemical Formula
- FeAsO4 · 3.5H2O
- Elements
- As, Fe, H, O
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Kaňkite FAQs
How do I identify Kaňkite?
Kaňkite can be identified by its hardness of 2 - 3 on the Mohs scale. Look for these key characteristics when examining specimens.
How hard is Kaňkite?
Kaňkite has a hardness of 2 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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