Sodium-autunite Mineral Data

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General Sodium-autunite Information

Chemical Formula:

Na2(UO2)2(PO4)2•8(H2O)

Composition:

Molecular Weight = 920.10 gm

Sodium 5.00 % Na 6.74 % Na₂O

Uranium 51.74 % U 58.70 % UO₂

Phosphorus 6.73 % P 15.43 % P₂O₅

Hydrogen 1.75 % H 15.66 % H₂O

Oxygen 34.78 % O

______ ______

100.00 % 96.52 % = TOTAL OXIDE

Empirical Formula:

Na₂(UO₂)₂(PO₄)₂•8(H₂O)

Environment:

Oxidized uranium mineral.

IMA Status:

Valid Species (Pre-IMA) 1958

Locality:

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

Name Origin:

Named after autunite and the composition containing sodium.

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Sodium-autunite Crystallography

Axial Ratios:

a:c = 1:1.2887

Cell Dimensions:

a = 6.976, c = 8.99, Z = 1; V = 437.49 Den(Calc)= 3.49

Crystal System:

Tetragonal - Ditetragonal DipyramidalH-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-autunite

Color:

Yellow, Lettuce yellow.

Density:

3.584

Diaphaneity:

Transparent to Translucent

Hardness:

2-2.5 - Gypsum-Finger Nail

Luminescence:

Fluorescent, Short UV=strong yellow-green, Long UV=strong yellow-green.

Luster:

Vitreous - Pearly

Optical Properties of Sodium-autunite

Gladstone-Dale:

CI meas= -0.037 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.065 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1629,KPDmeas= 0.1586,KC= 0.153
Ncalc = 1.53 - 1.55

Optical Data:

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

Calculated Properties of Sodium-autunite

Electron Density:

Bulk Density (Electron Density)=3.21 gm/cc
note: Specific Gravity of Sodium-autunite =3.58 gm/cc.

Fermion Index:

Fermion Index = 0.0038948265
Boson Index = 0.9961051735

Photoelectric:

PE_{Sodium-autunite}=1,311.24 barns/electron
U=PE_{Sodium-autunite} x r_electron=4,208.65 barns/cc.

Radioactivity:

GRapi = 3,949,577.84 (Gamma Ray American Petroleum Institute Units)
Concentration of Sodium-autunite per GRapi unit = 253.19 (PPB)

Sodium-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) 7.70 ± 1.93 grams of pure Sodium-autunite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 770.12 ±192.53 grams of pure Sodium-autunite .

**Estimated Radioactivity from Sodium-autunite** - 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 / 8.11 cm	92,614,233	2.50E-03	3,949,577.84	1,298.49
100 gm / 3.76 cm	9,261,423	2.50E-04	394,957.78	129.85
10 gm / 1.75 cm	926,142	2.50E-05	39,495.78	12.98
1 gm / 8.11 mm	92,614	2.50E-06	3,949.58	1.30
0.1 gm / 3.76 mm	9,261	2.50E-07	394.96	0.13
0.01 gm / 1.75 mm	926	2.50E-08	39.50	0.01
0.001 gm / 0.81 mm	93	2.50E-09	3.95	0.00

Weight of pure Sodium-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-autunite Classification

Dana Class:

40.02a.05.01 (40)Hydrated Phosphates, etc

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

(40.02a.05)Dana Group

40.02a.05.01 Sodium-autunite Na2(UO2)2(PO4)2•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 -Autunite Group

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-autunite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Larousse des Mineraux,1981)

See Also:

Links to other databases for Sodium-autunite :
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

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Print or Cut-and-Paste your Sodium-autunite Specimen Label here :

Sodium-autunite

Na2(UO2)2(PO4)2•8(H2O)
Dana No: 40.02a.05.01 Strunz No: 08.XX.00
Locality:

Notes: