Uranophane

A variety of Uranophane Group

Uranophane specimen - rock identification

What is Uranophane?

Uranophane (Ca(UO2)2(SiO3OH)2·5H2O), also known as uranotile, is a rare calcium uranium silicate hydrate mineral that forms from the oxidation of other uranium-bearing minerals. It has a yellow color and is radioactive.

Uranophane Market Value Calculator

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

Preview only. Full pricing comps and valuation report in the app.

Uranophane Localities Map

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

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

More Images

Uranophane specimen 2
© Robert M. Lavinsky

Quick Facts

Physical Properties

Color
Light yellow, lemon-yellow, honey-yellow, straw-yellow, green-yellow
Hardness (Mohs)
2 - 3
Density
3.78 g/cm³

Chemical Properties

Chemical Formula
Ca(UO2)2(SiO3OH)2•5H2O
Elements
Ca, H, O, Si, U

Also Known As

UranophaneLambertiteUranotilΑ-uranotile
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