Derriksite
A variety of Minerals

What is Derriksite?
Derriksite is a very rare uranium mineral with the chemical formula Cu4(UO2)(SeO3)2(OH)6•H2O. It is a secondary mineral that contains copper, uranium and the rarer selenium. It is a bright green to duller bottle green colour. Its crystal habit is acicular, it is most likely to be found along with the uranyl selenium mineral demesmaekerite, but derriksite is much rarer than demesmaekerite. It is named after Jean Marie Francois Joseph Derriks (1912–1992), geologist and administrator of the Union Minière du Haut Katanga (UMHK). It has a Mohs hardness of about 2.
Derriksite Market Value Calculator
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Derriksite Localities Map
See where Derriksite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- clear green
- Density
- 4.61 g/cm³
Chemical Properties
- Chemical Formula
- Cu4(UO2)(SeO3)2(OH)6 Formula originally assumed to contain 1 water molecule.
- Elements
- Cu, H, O, Se, U

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