How do I identify Guilleminite?

Guilleminite can be identified by its hardness of 2 on the Mohs scale, Bright yellow color. Look for these key characteristics when examining specimens.

What color is Guilleminite?

Guilleminite typically appears in Bright yellow. Color can vary depending on impurities and formation conditions.

How hard is Guilleminite?

Guilleminite has a hardness of 2 on the Mohs scale. This makes it a soft mineral that can be scratched easily.

How to Identify Guilleminite | Properties, Meaning & Uses

What is Guilleminite?

Guilleminite (Ba(UO2)3(SeO3)2(OH)4•3H2O) is a uranium mineral named by R. Pierrot, J. Toussaint, and T. Verbeek in 1965 in honor of Jean Claude Guillemin (1923–1994), a chemist and mineralogist. It is a rare uranium/selenium mineral found at the Musonoi Mine in the Katanga Province of the Democratic Republic of the Congo. This secondary mineral also includes barium in its structure, in addition to selenium and uranium. It is bright yellow in colour and usually has an acicular crystal habit. It has a Mohs hardness of 2–3.

Guilleminite Market Value Calculator

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

Guilleminite Localities Map

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