Plášilite
A variety of Minerals
What is Plášilite?
Plášilite is a very rare uranium mineral with the formula Na2(UO2)(SO4)2•3H2O. Chemically related minerals include natrozippeite, belakovskiite, meisserite, fermiite and oppenheimerite. Most of these uranyl sulfate minerals were originally found in the Blue Lizard mine, San Juan County, Utah, US. The mineral is named after Czech crystallographer Jakub Plášil.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Plášilite 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.
Plášilite Localities Map
See where Plášilite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Composition of Plášilite
The crystal structure of plášilite is of a new type. Its building blocks are: (UO2)2(SO4)2(OH)2 sheets, with a charge 2-, parallel to (010), of a phosphuranylite topology edge-sharing NaO2(H2O)4 polyhedra, parallel to [001] The sodium-bearing polyhedra link the uranyl-sulfate sheets. It terms of sheet geometry, crystal structure of plášilite is similar to that of deliensite.
Quick Facts
Physical Properties
- Color
- Greenish yellow
- Hardness (Mohs)
- 2 - 3
- Density
- 3.726 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Na(UO2)(SO4)(OH)·2H2O
- Elements
- H, Na, O, S, U
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Plášilite FAQs
How do I identify Plášilite?
Plášilite can be identified by its hardness of 2 - 3 on the Mohs scale, Greenish yellow color. Look for these key characteristics when examining specimens.
What color is Plášilite?
Plášilite typically appears in Greenish yellow. Color can vary depending on impurities and formation conditions.
How hard is Plášilite?
Plášilite has a hardness of 2 - 3 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
What is the composition of plášilite of Plášilite?
The crystal structure of plášilite is of a new type. Its building blocks are: (UO2)2(SO4)2(OH)2 sheets, with a charge 2-, parallel to (010), of a phosphuranylite topology edge-sharing NaO2(H2O)4 polyhedra, parallel to [001] The sodium-bearing polyhedra link the uranyl-sulfate sheets. It terms of sheet geometry, crystal structure of plášilite is similar to that of deliensite.
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