Studtite 
(UO2)2O2(H2O)2 • 2H2O [CNMNC approved formula]
Named for Franz Edward Studt, Belgian prospector and geologist, author of the first geological map (1913) of Shava, Zaire.
IMA status : | Valid species (Pre-IMA 1947) Grandfathered |
CLASSIFICATION | |
Dana (8th edition) : |
05.03.01.01 |
(05) Oxides Containing Uranium and Thorium | |
(05.03) with a cation charge of 8+ (AO4) and hydrated | |
(05.03.01) Studtite Group | |
Nickel-Strunz (10th edition) : |
04.GA.15 |
(04) Oxides and Hydroxides | |
(04.G) Uranyl Hydroxides | |
(04.GA) Without additional cations | |
Crystal system: | Monoclinic System |
Point group (H-M): | 2/m — prismatic |
Other Properties: | Radioactive. |