Plavnoite
A variety of Minerals
What is Plavnoite?
Plavnoite is a very rare complex uranium sulfate mineral with the formula K0.8Mn0.6[(UO2)2O2(SO4)]•3.5H2O. Typically for the secondary uranium mineral, plavnoite contains uranyl groups. It was discovered in the Plavno mine in Jáchymov, Czech Republic. The Jáchymov site is known as a type locality for many rare and unique minerals.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Plavnoite 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.
Plavnoite Localities Map
See where Plavnoite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Chemical Properties
- Chemical Formula
- K0.8Mn0.6[(UO2)2O2(SO4)]·3.5H2O
- Elements
- H, K, Mn, O, S, U
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