Mineralogy Database

Sodium-autunite Mineral Data

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General Sodium-autunite Information

Help on Chemical  Formula: Chemical Formula: Na2(UO2)2(PO4)2•8(H2O)
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: Na2(UO2)2(PO4)2•8(H2O)
Help on Environment: Environment: Oxidized uranium mineral.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1958
Help on Locality: Locality: Kuruk uranium deposit in Khodzhent, Samgar Steppe, northern Tadjikistan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after autunite and the composition containing sodium.

Sodium-autunite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.2887
Help on Cell Dimensions: Cell Dimensions: a = 6.976, c = 8.99, Z = 1; V = 437.49 Den(Calc)= 3.49
Help on Crystal System: 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/Io): 3.67(1), 1.566(0.8), 2.675(0.8),

Physical Properties of Sodium-autunite

Help on Color: Color: Yellow, Lettuce yellow.
Help on Density: Density: 3.584
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luminescence: Luminescence: Fluorescent, Short UV=strong yellow-green, Long UV=strong yellow-green.
Help on Luster: Luster: Vitreous - Pearly

Optical Properties of Sodium-autunite

Help on Gladstone-Dale: 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
Help on Optical Data: Optical Data: Uniaxial (-), e=1.559, w=1.578, bire=0.0190.

Calculated Properties of Sodium-autunite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.21 gm/cc
note: Specific Gravity of Sodium-autunite =3.58 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0038948265
Boson Index = 0.9961051735
Help on Photoelectric: Photoelectric: PESodium-autunite =1,311.24 barns/electron
U=PESodium-autunite x relectron=4,208.65 barns/cc.
Help on Radioactivity: 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
Curies (Ci)
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

Help on  Dana Class: 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
Help on  Strunz Class: Strunz Class: 08.XX.00 08 - 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

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Larousse des Mineraux,1981)
Help on See Also: 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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Dana No: 40.02a.05.01 Strunz No: 08.XX.00





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