Curienite	IMA-A 1967-049
Uranium	40.2a.27.2 (Dana Classification Number)
(Images)	7/E.11-110 (Strunz ID)

Property	Data	Remarks
Named for:	Hubert Curien (1924 - 2005), French Professor of Mineralogy and Crystallography at the Sorbonne University, Paris, France
Alternate     Name(s):
Mineral Class:	Phosphates, Arsenates and Vanadates   Uranylphosphates and uranylvanadates with: [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-, uranyl-group vanadates with [UO2]2+ - [V2O8]6-     Tyuyamunite series
Chemical     Formula:	Pb(UO2)2(VO4)2 · 5H2O
Chemical     Composition:	Hydrogen: (H) 0.94% Lead: (Pb) 19.42% Oxygen: (O) 25.49% Uranium: (U) 44.61% Vanadium: (V) 9.55%	by weight
Molecular     Weight:	1,067.21	daltons (amu)
Specific     Radioactivity:	(All radiation is for a 1 gram, fully aged specimen) Specific Activity Dose Rate Becquerels Curies milliRems/hour microSieverts/hour 7.9848 × 1004 3.16 × 10-06 1.07 107.29 Estimated Average Annual Exposure: 360 mRem (3.6 milliSieverts)
Crystalography:	System: Orthorhombic - Dipyramidal Axial Ratios: a: 1.2307 b: 1 c: 1.9337 Cell Dimensions: a: 10.4 Å b: 8.45 Å c: 16.34 Å Z: 4 V: 1,435.96 Å3 DenCalc: 4.94 H-M Symbol: 2/m 2/m 2/m Space Group: Pcan X-Ray Diffraction:   By Intensity ( I/Io ) (1): 3.005 Å (1): 8.19 Å (0.8): 4.1 Å
Habit:	Masses of microscopic crystals
Cleavage:	[001]   [010]   [100]
Fracture:
Moh's     Hardness:	2 - 3
Density:	4.88	grams/cm3
Color:	Canary-yellow
Streak:	Light yellow
Luster:	Adamantine - Pearly
Diaphaneity:
Pleochroism:	(x):   (y:)   (z:)
Ultra Violet     Fluorescence:	Long Wave:   Short Wave:
Magnetism:	Non-magnetic
Occurance:	Usually found in contact with, or close proximity to, Francevillite
Associated     Minerals:	Barite, Becquerelite, Chervetite, Coffinite, Cuprosklodowskite, Dewindtite, Duttonite, Francevillite, Galena, Goethite, Hematite, Johannite, Karelianite, Kasolite, Liebigite, Masuyite, Metaschoepite, Metatorbernite, Metavanuralite, Montroseite, Nolanite, Novácekite, Parsonsite, Phosphuranylite, Pyrite, Richetite, Roscoelite, Schoepite, Sklodowskite, Soddyite, Torbernite, Urancalcarite, Uraninite, Pitchblende, Uranophane, Vandendriesscheite, Vanuralite, Wolsendorfite, Wulfenite, Zippeite Mineral   -   > 67% of sites Mineral   -   > 44% of sites Mineral   -   > 22% of sites Minerals   -   Uranium & Thorium mineral links	These are minerals known to be found with Curienite
Localities:	Somewhat rare Curienite Localities
Notes:	Very radioactive a- and b-particles, g-rays. Crystals are likely metamict.

Curienite Images

Specimen #1
	(004t)	(004b)
	(Upper Side)	(Lower Side)
(Francevillite-004ba)	(Francevillite-004bb)		(Francevillite-004bc)
(Francevillite-004bd)	(Francevillite-004be)	(Francevillite-004bf)	(Francevillite-004tf)
			(Upper Side)
(w. Francevillite & Mounanaite) Mounana mine, Franceville, Haut-Ogooué, Gabon (all the above)
Specimen Notes Occurrence -       -     Specimen Physical Properties Weight: x grams     g-Radiation Level:   cmp   msieverts background: 20 cpm