Curienite Mineral Data

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General Curienite Information

Chemical Formula:

Pb(UO2)2V2O8•5(H2O)

Composition:

Molecular Weight = 1,067.21 gm

Uranium 44.61 % U 50.60 % UO₂

Vanadium 9.55 % V 17.04 % V₂O₅

Hydrogen 0.94 % H 8.44 % H₂O

Lead 19.42 % Pb 20.91 % PbO

Oxygen 25.49 % O

______ ______

100.00 % 97.00 % = TOTAL OXIDE

Empirical Formula:

Pb(UO₂)₂V⁵⁺₂O₈•5(H₂O)

Environment:

Oxidized zone of a Pb-bearing U–V deposit.

IMA Status:

Approved IMA 1968

Locality:

Mounana uranium mine, Franceville, Gabon. Link to MinDat.org Location Data.

Name Origin:

Named for Hubert Curien (1924- ), French mineralogist and crystallographer, Laboratory of Mineralogy and Crystallography, University of Pierre and Marie Curie (Sorbonne), Paris, Fra nce.

Name Pronunciation:

Curienite + Pronunciation

Synonym:

ICSD 23515

PDF 22-402

Curienite Image

Images:

Curienite Francevillite

Comments: Intense yellow curienite and orange francevillite.
Location: Mouonana, Haut-Ogoue, Gabon. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Curienite Crystallography

Axial Ratios:

a:b:c =1.2307:1:1.9337

Cell Dimensions:

a = 10.4, b = 8.45, c = 16.34, Z = 4; V = 1,435.96 Den(Calc)= 4.94

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pcan

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.005(1), 8.19(1), 4.1(0.8),

Crystal Structure:

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Borene J , Cesbron F , Bulletin de la Societe Francaise de Mineralogie et de Cristallographie , 94 (1971) p.8-14, Structure cristalline de la curienite Pb(UO2)2(VO4)2(H2O)5, Locality: Mounana, Gabon

Physical Properties of Curienite

Color:

Canary yellow.

Density:

4.88

Hardness:

3 - Calcite

Luster:

Adamantine - Pearly

Streak:

light yellow

Optical Properties of Curienite

Optical Data:

NCalc= 1.82 - from Gladstone-Dale relationship (KC = 0.1651) where Ncalc=Dcalc*KC+1
NCalc= 1.81 - from Gladstone-Dale relationship (KC = 0.1651) where Ncalc=Dmeas*KC+1

Calculated Properties of Curienite

Electron Density:

Bulk Density (Electron Density)=4.24 gm/cc
note: Specific Gravity of Curienite =4.94 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_Curienite=1,528.41 barns/electron
U=PE_Curienite x r_electron=6,480.55 barns/cc.

Radioactivity:

GRapi = 3,263,541.37 (Gamma Ray American Petroleum Institute Units)
Concentration of Curienite per GRapi unit = 306.42 (PPB)

Curienite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 9.32 ± 2.33 grams of pure Curienite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 932.01 ±233.00 grams of pure Curienite .

**Estimated Radioactivity from Curienite** - very strong
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.28 cm	79,847,777	2.16E-03	3,263,541.37	1,072.95
100 gm / 3.38 cm	7,984,778	2.16E-04	326,354.14	107.29
10 gm / 1.57 cm	798,478	2.16E-05	32,635.41	10.73
1 gm / 7.28 mm	79,848	2.16E-06	3,263.54	1.07
0.1 gm / 3.38 mm	7,985	2.16E-07	326.35	0.11
0.01 gm / 1.57 mm	798	2.16E-08	32.64	0.01
0.001 gm / 0.73 mm	80	2.16E-09	3.26	0.00

Weight of pure Curienite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.94 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem

Curienite Classification

Dana Class:

40.02a.27.02 (40)Hydrated Phosphates, etc

(40.02a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++

(40.02a.27)Dana Group

40.02a.27.01 Francevillite (Ba,Pb)(UO2)2V2O8•5(H2O) Pcan 2/m 2/m 2/m

40.02a.27.02 Curienite Pb(UO2)2V2O8•5(H2O) Pcan 2/m 2/m 2/m

Strunz Class:

04.HB.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.H - V[5,6] Vanadates

04.HB -Uranyl Sorovanadates

04.HB.15 Curienite Pb(UO2)2V2O8•5(H2O) Pcan 2/m 2/m 2/m

04.HB.15 Francevillite (Ba,Pb)(UO2)2V2O8•5(H2O) Pcan 2/m 2/m 2/m

04.HB.15 Fritzscheite Mn(UO2)2[(V,P)O4]2•4(H2O) Pnam 2/m 2/m 2/m

Other Curienite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Curienite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Uranium Minerals
16 - WWW-MINCRYST

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Curienite

Pb(UO2)2V2O8•5(H2O)
Dana No: 40.02a.27.02 Strunz No: 04.HB.15
Locality:

Notes: