Sodium meta-autunite Mineral Data

General Sodium meta-autunite Information

Chemical Formula:

Na2(UO2)2(PO4)2•6-8(H2O)

Composition:

Molecular Weight = 902.08 gm

Sodium 5.10 % Na 6.87 % Na₂O

Uranium 52.77 % U 59.87 % UO₂

Phosphorus 6.87 % P 15.74 % P₂O₅

Hydrogen 1.56 % H 13.98 % H₂O

Oxygen 33.70 % O

______ ______

100.00 % 96.45 % = TOTAL OXIDE

Empirical Formula:

Na₂(UO₂)₂(PO₄)₂•7(H₂O)

Environment:

Secondary uranium mineral.

IMA Status:

Approved IMA 1987 (Dana # Added)

Locality:

Kuruk uranium deposit in Khodzhent, Samgar Steppe, northern Tadjikistan. Link to MinDat.org Location Data.

Name Origin:

Named after sodium autunite with the loss of hydration water.

Sodium meta-autunite Crystallography

Axial Ratios:

a:c = 1:1.23499

Cell Dimensions:

a = 6.996, c = 8.64, Z = 1; V = 422.88 Den(Calc)= 3.54

Crystal System:

Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 4/nmm

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

By Intensity(I/I_o): 3.67(1), 1.566(0.8), 2.675(0.8),

Physical Properties of Sodium meta-autunite

Color:

Yellow, Lettuce yellow.

Density:

3.584

Hardness:

2-2.5 - Gypsum-Finger Nail

Luster:

Vitreous - Pearly

Optical Properties of Sodium meta-autunite

Gladstone-Dale:

CI meas= -0.063 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= -0.076 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1606,KPDmeas= 0.1586,KC= 0.1492
Ncalc = 1.53

Optical Data:

Uniaxial (-), e=1.559, w=1.578, bire=0.0190.

Calculated Properties of Sodium meta-autunite

Electron Density:

Bulk Density (Electron Density)=3.19 gm/cc
note: Specific Gravity of Sodium meta-autunite =3.58 gm/cc.

Fermion Index:

Fermion Index = 0.0039637605
Boson Index = 0.9960362395

Photoelectric:

PE_{Sodium meta-autunite}=1,343.85 barns/electron
U=PE_{Sodium meta-autunite} x r_electron=4,292.67 barns/cc.

Radioactivity:

GRapi = 4,009,174.19 (Gamma Ray American Petroleum Institute Units)
Concentration of Sodium meta-autunite per GRapi unit = 249.43 (PPB)

Sodium meta-autunite 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) 7.59 ± 1.90 grams of pure Sodium meta-autunite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 758.68 ±189.67 grams of pure Sodium meta-autunite .

**Estimated Radioactivity from Sodium meta-autunite** - 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 / 8.11 cm	94,463,806	2.55E-03	4,009,174.19	1,318.08
100 gm / 3.76 cm	9,446,381	2.55E-04	400,917.42	131.81
10 gm / 1.75 cm	944,638	2.55E-05	40,091.74	13.18
1 gm / 8.11 mm	94,464	2.55E-06	4,009.17	1.32
0.1 gm / 3.76 mm	9,446	2.55E-07	400.92	0.13
0.01 gm / 1.75 mm	945	2.55E-08	40.09	0.01
0.001 gm / 0.81 mm	94	2.55E-09	4.01	0.00

Weight of pure Sodium meta-autunite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.58 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

Sodium meta-autunite Classification

Dana Class:

40.02a.01.04 (40)Hydrated Phosphates, etc

(40.02a)where A++ (B++)2 (XO4) ï¿½ x(H2O), containing (UO2)++

(40.02a.01)Autunite Group

40.02a.01.01 Autunite Ca(UO2)2(PO4)2•10-12(H2O) I 4/mmm 4/m 2/m 2/m

40.02a.01.02 Meta-autunite Ca(UO2)2(PO4)2•2-6(H2O) P 4/nmm 4/m 2/m 2/m

40.02a.01.03 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4•5(H2O)(?) Unk Ortho

40.02a.01.04 Sodium meta-autunite! Na2(UO2)2(PO4)2•6-8(H2O) P 4/nmm 4/m 2/m 2/m

Strunz Class:

08.XX.00 08 - PHOSPHATES, ARSENATES, VANADATES

08.X - Unclassified Strunz PHOSPHATES, ARSENATES, VANADATES

08.XX -Phosphate, Hydrated

08.XX.00 Arsenobismite? Bi2(AsO4)(OH)3 Unk Ortho

08.XX.00 Coeruleolactite (Ca,Cu)Al6(PO4)4(OH)8•4-5(H2O) P1 1

08.XX.00 Cheralite-(Ce)? (Ce,Ca,Th)(P,Si)O4 P 2₁/n 2/m

08.XX.00 Chernovite-(Ce)* (Ce,Y)(AsO4) I 4₁/amd 4/m 2/m 2/m

08.XX.00 Kerstenite? PbSeO4(?) P nma 2/m 2/m 2/m

08.XX.00 Laubmannite? Fe3Fe6(PO4)4(OH)12 Unk Ortho

08.XX.00 Spodiosite? Ca2(PO4)F Pbcm 2/m 2/m 2/m

08.XX.00 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4•5(H2O)(?) Unk Ortho

08.XX.00 Viseite Ca10Al24(SiO4)6(PO4)7O22F3•72(H2O)(?) I a3d 4/m 3 2/m

08.XX.00 Vanuranylite? (H3O,Ba,Ca,K)1.6(UO2)2V2O8•4(H2O)(?) C 2/c ? 2/m

08.XX.00 Sodium-autunite Na2(UO2)2(PO4)2•8(H2O) P 4/nmm 4/m 2/m 2/m

08.XX.00 Sodium meta-autunite! Na2(UO2)2(PO4)2•6-8(H2O) P 4/nmm 4/m 2/m 2/m

08.XX.00 Slavkovite! Cu13(AsO4)6(AsO3OH)4•23(H2O) P1 1

08.XX.00 IMA2000-020! Fe4[AsO3OH]5[AsO2(OH)2]2•20(H2O) Ortho Ortho

08.XX.00 Lewisite! (Ca,Fe,Na)2(Sb,Ti)2O7 F d3m 4/m 3 2/m

08.XX.00 Kamarizaite! Fe3(AsO4)2(OH)3•3H2O Pccm, Pcc2, Pcmm, Pcm21 Ortho

08.XX.00 Lapeyreite! Cu3O[AsO3(OH)]2•H2O C 2/m 2/m

08.XX.00 IMA2008-063 Pb[Zn0.25,[]0.75]Fe3H(AsO4)2(OH)6 C 2/c 2/m

08.XX.00 IMA2009-002! Cu3(AsO4)2 P 2₁/c 2/m

08.XX.00 IMA2009-005 (Y,Ca,REE)5[(Si,P)O4]3F P 6₃/m 6/m 2/m 2/m

08.XX.00 IMA2009-016 Cu4H(AsO4)2(OH)3•H2O P1 1

Other Sodium meta-autunite Information

References:

PHYS. PROP.(Am.Min.,Vol.80,p1329,1994) OPTIC PROP.(Am.Min.,Vol.80,p1329,1994)

See Also:

Links to other databases for Sodium meta-autunite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - Google Images
4 - Google Scholar
5 - MinDAT
6 - MinMax(Deutsch)
7 - MinMax(English)
8 - Mineralienatlas (Deutsch)
9 - QUT Mineral Atlas
10 - Ruff.Info

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Sodium meta-autunite

Na2(UO2)2(PO4)2•6-8(H2O)
Dana No: 40.02a.01.04 Strunz No: 08.XX.00
Locality:

Notes: