Sklodowskite

Sklodowskite is a uranium mineral with the chemical formula: Mg(UO2)2(HSiO4)2·5H2O. It is a secondary mineral which contains magnesium and is a bright yellow colour, its crystal habit is acicular, but can form in other shapes. It has a Mohs hardness of about 2-3. It is named after the maiden name of Marie Skłodowska Curie.[1] It is the magnesium analogue of the much more common uranium mineral Cuprosklodowskite, which contains copper instead.

Sklodowskite
Sklodowskite-Gypsum-176753.jpg
Sklodowskite on gypsum
General
CategoryNesosilicate
Formula
(repeating unit)		Mg(UO2)2(HSiO4)2·5H2O
Strunz classification9.AK.10
Crystal systemMonoclinic
Crystal classPrismatic (2/m)
(same H-M symbol)
Space groupC2/m
Identification
ColourLight yellow to green-yellow
CleavagePerfect
on {100}
Mohs scale hardness2 - 3
LustreAdamantine, vitreous, silky
StreakYellow
DiaphaneityTransparent, translucent
Density3.54 g/cm3
Other characteristicsRadioactive.svg Radioactive


It was discovered by Alfred Schoep [de] (1881–1966) in 1924. 


This article uses material from the Wikipedia article
 Metasyntactic variable, which is released under the 
Creative Commons
Attribution-ShareAlike 3.0 Unported License.