Renardite Mineral Data

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General Renardite Information

Chemical Formula:

Pb(UO2)4(PO4)2(OH)4•7(H2O)

Composition:

Molecular Weight = 1,671.39 gm

Uranium 56.97 % U 64.62 % UO₂

Phosphorus 3.71 % P 8.49 % P₂O₅

Hydrogen 1.09 % H 9.70 % H₂O

Lead 12.40 % Pb 13.35 % PbO

Oxygen 25.85 % O

______ ______

100.00 % 96.17 % = TOTAL OXIDE

Empirical Formula:

Pb(UO₂)₄(PO₄)₂(OH)₄•7(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1928

Locality:

Kaslo mine, Shinkolobwe, Shaba, Katanga, Zaire. Link to MinDat.org Location Data.

Name Origin:

Named for Alphonse Francois Renard (1842-1903), mineralogist, University of Ghent, Belgium.

Name Pronunciation:

Renardite + Pronunciation

Renardite Image

Images:

Renardite

Comments: Bright yellow, tabular crystals of renardite on matrix.
Location: Grury, Saone-et-Loire, France. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Renardite Crystallography

Axial Ratios:

a:b:c =0.9211:1:0.7981

Cell Dimensions:

a = 15.88, b = 17.24, c = 13.76, Z = 6; V = 3,767.09 Den(Calc)= 4.42

Crystal System:

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

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

By Intensity(I/I_o): 7.95(1), 3.11(0.9), 2.88(0.8),3.96(0.7), 4.43(0.6), 5.83(0.6), 10.25(0.5), 3.4(0.4),

Physical Properties of Renardite

Cleavage:

{100} Perfect

Color:

Yellow.

Density:

4.34

Diaphaneity:

Transparent

Habit:

Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces.

Optical Properties of Renardite

Gladstone-Dale:

CI meas= -0.285 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.262 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1652,KPDmeas= 0.1682,KC= 0.1309
Ncalc = 1.57 - 1.58

Optical Data:

Biaxial (-), a=1.715, b=1.736, g=1.739, bire=0.0240, 2V(Calc)=40, 2V(Meas)=41. Dispersion r > v.

Calculated Properties of Renardite

Electron Density:

Bulk Density (Electron Density)=3.78 gm/cc
note: Specific Gravity of Renardite =4.42 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Renardite=1,735.65 barns/electron
U=PE_Renardite x r_electron=6,554.45 barns/cc.

Radioactivity:

GRapi = 4,148,547.89 (Gamma Ray American Petroleum Institute Units)
Concentration of Renardite per GRapi unit = 241.05 (PPB)

Renardite 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) 7.33 ± 1.83 grams of pure Renardite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 733.19 ±183.30 grams of pure Renardite .

**Estimated Radioactivity from Renardite** - very strong
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Becquerels (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 7.56 cm	101,968,247	2.76E-03	4,148,547.89	1,363.91
100 gm / 3.51 cm	10,196,825	2.76E-04	414,854.79	136.39
10 gm / 1.63 cm	1,019,682	2.76E-05	41,485.48	13.64
1 gm / 7.56 mm	101,968	2.76E-06	4,148.55	1.36
0.1 gm / 3.51 mm	10,197	2.76E-07	414.85	0.14
0.01 gm / 1.63 mm	1,020	2.76E-08	41.49	0.01
0.001 gm / 0.76 mm	102	2.76E-09	4.15	0.00

Weight of pure Renardite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.42 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

Renardite Classification

Dana Class:

42.04.09.02 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.04)where (AB)5 (XO4)2 Zq · x(H2O)

(42.04.09)Arsenuranylite Group

42.04.09.01 Arsenuranylite Ca(UO2)4(AsO4)2(OH)4•6(H2O) Bmmb 2/m 2/m 2/m

42.04.09.02 Renardite Pb(UO2)4(PO4)2(OH)4•7(H2O) Bmmb 2/m 2/m 2/m

42.04.09.03 Kivuite? (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8•7(H2O) Unk Ortho

Strunz Class:

08.EC.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.E - Uranyl Phosphates and Arsenates

08.EC -UO2:RO4 = 3:2

08.EC.10 Arsenuranylite Ca(UO2)4(AsO4)2(OH)4•6(H2O) Bmmb 2/m 2/m 2/m

08.EC.10 Dewindtite Pb3[H(UO2)3O2(PO4)2]2•12(H2O) Bmmb 2/m 2/m 2/m

08.EC.10 Kivuite? (Th,Ca,Pb)H2(UO2)4(PO4)2(OH)8•7(H2O) Unk Ortho

08.EC.10 Renardite Pb(UO2)4(PO4)2(OH)4•7(H2O) Bmmb 2/m 2/m 2/m

08.EC.10 Phosphuranylite KCa(H3O)3(UO2)7(PO4)4O4•8(H2O) C mcm 2/m 2/m 2/m

08.EC.10 Yingjiangite (K2,Ca)(UO2)7(PO4)4(OH)6•6(H2O) Bmmb 2/m 2/m 2/m

Other Renardite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Renardite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
11 - Uranium Minerals

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Ask about Renardite here :
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Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
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Print or Cut-and-Paste your Renardite Specimen Label here :

Renardite

Pb(UO2)4(PO4)2(OH)4•7(H2O)
Dana No: 42.04.09.02 Strunz No: 08.EC.10
Locality:

Notes: