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.

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.

Plášilite Market Value Calculator

Estimate the market value of Plášilite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Plášilite Localities Map

See where Plášilite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview

North ZoneCentral RidgeSouth Basin

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.