Sklodowskite	IMA-GP
Uranium	53.3.1.3 (Dana Classification Number)
(Images)	8/B.34-10 (Strunz ID)

Madam Marie Curie (1867-1934) 1903 Nobel Laureate in Physics 1911 Nobel Laureate in Chemistry

Property	Data	Remarks
Named for:	Marie Curie (née Maria Sklodowska), (1867 - 1934), Nobel Laureate for Physics in 1903, and for Chemistry in 1911
Alternate     Name(s):	Chinkolobwite
Mineral Class:	Silicates   Nesosilicates "Insel" silicates with anions unfamiliar to tetraheders. Uranyl-"Insel" silicates with [UO2]2+ - [SiO4]4-     Sklodowskite - Uranophane - Kasolite series
Chemical     Formula:	Mg(UO2)2Si2O7 · 5-6H2O
Chemical     Composition:	Hydrogen: (H) 1.64% Magnesium: (Mg) 2.83% Oxygen: (O) 33.54% Silicon: (Si) 6.54% Uranium: (U) 55.44%	by weight
Molecular     Weight:	858.63	daltons (amu)
Specific     Radioactivity:	(All radiation is for a 1 gram, fully aged specimen) Specific Activity Dose Rate Becquerels Curies milliRems/hour microSieverts/hour 9.9244 × 1004 2.68 × 10-06 1.38 138.25 Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
Crystalography:	System: Monoclinic- Prismatic Axial Ratios: a: 2.458 b: 1 c: 0.9331 Cell Dimensions: a: 17.28 Å b: 7.03 Å c: 6.56 Å Z: 2 b: 105.88° V: 766.49 Å3 DenCalc: 3.72 H-M Symbol: 2/m Space Group: C2/m X-Ray Diffraction:   By Intensity ( I/Io ) (1): 8.42 Å (0.8): 4.19 Å (0.7): 3.27 Å	Sklodowskite Crystal
Habit:	Fibrous tufts and crusts (typical). Acicular, prismatic crystals in radial aggregates
Cleavage:	[001]   [010]   [100] Perfect
Fracture:	Brittle
Moh's     Hardness:	2 - 3
Density:	3.54	grams/cm3
Color:	Green-yellow to Yellow
Streak:	Greenish yellow, Pale yellow to Yellowish-white
Luster:	Vitreous to Silky
Diaphaneity:	Translucent to Subtranslucent
Pleochroism:	(x): Colorless (y:) Pale yellow (z:) Yellow
Ultra Violet     Fluorescence:	Long Wave: Fluorescent Short Wave: Fluorescent
Magnetism:	Non-magnetic
Occurance:	Oxidation zones of uranium ore deposits Often associated with altered uraninite, and with other secondary uranium minerals
Associated     Minerals:	Aragonite, Arsenopyrite, Autunite, Azurite, Barite, Becquerelite, Bornite, Calcite, Chalcocite, Chalcopyrite, Coffinite, Covellite, Cuprite, Cuprosklodowskite, Curite, Dewindtite, Dolomite, Fluorite, Galena, Goethite, Gypsum, Hematite, Johannite, Kasolite, Liebigite, Malachite, Marcasite, Meta-Autunite, Metatorbernite, Metazeunerite, Molybdenite, Novácekite, Phosphuranylite, Pyrite, Pyrolusite, Quartz, Rutherfordine, Safflorite, Saléeite, Schoepite, Soddyite, Sphalerite, Torbernite, Uraninite, Uranophane, Uranophane-beta, Uranopilite, Vandenbrandeite, Zeunerite, Zippeite Mineral   -   > 67% of sites Mineral   -   > 50% of sites Mineral   -   > 25% of sites Minerals   -   Uranium & Thorium mineral links	These are minerals known to be found with Sklodowskite
Locations:	Relatively Common Sklodowskite Locations
Notes:	Strongly radioactive a- and b-particles, g-rays.

Sklodowskite Images

Specimen #1
(001a)	(001b)	(001c)	(001d)
(001e)
Mashamba West Mine, Kolwezi, Western area, Shaba Cu belt, Shaba (Katanga), Congo (Zaïre)
Specimen Notes Occurrence -     Crystals -     Appearence -   Diaphaniety - Luster -     -     Specimen Physical Properties Size   cm   cm   cm Weight: x grams     g-Radiation Level:   cmp   msieverts background: 20 cpm

Specimen #2

(002a)

(with Kasolite)

Musonoi mine, Kolwezi, Shaba (Katanga), Congo (Zaïre)

Specimen Notes Occurrence -     Crystals -     Appearence -   Diaphaniety - Luster -     -     Specimen Physical Properties Size   cm   cm   cm Weight: x grams     g-Radiation Level:   cmp   msieverts background: 20 cpm