Sodium-autunite Mineral Data

Sodium-autunite Mineral Data

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

Diaphaniety:

Transparent to Translucent

Hardness:

2-2.5 - Gypsum-Finger Nail

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

Optical Data:

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

Calculated Properties of Sodium-autunite

Electron Density:

r_electron=3.21 gm/cc
note: r_{Sodium-autunite}=3.58 gm/cc.

Fermion Index

Fermion Index = 0.00389
Boson Index = 0.99611

Photoelectric:

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

Radioactivity:

GRapi = 3,949,575.82 (Gamma Ray American Petroleum Institute Units)

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 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	92,614,224	2.50E-03	3,949,575.82	1,298.49
100 gm / 3.76 cm	9,261,422	2.50E-04	394,957.58	129.85
10 gm / 1.75 cm	926,142	2.50E-05	39,495.76	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:

40.2a.5.1 (40)Hydrated Phosphates, etc

(40.2a)where A++ (B++)2 (XO4) · x(H2O), containing (UO2)++

(40.2a.5)Dana Group

40.2a.5.1 Sodium-autunite Na2(UO2)2(PO4)2·8(H2O) P 4/nmm 4/m 2/m 2/m

Strunz Class:

VII/E.01-130 VII - Phosphates, Arsenates and Vanadates

VII/E - Uranylphosphates and uranylvanadates with [UO2]2+ - [PO4 | AsO4]3- and [UO2]2+ - [V2O8]6-

VII/E.01 - Autunite group

VII/E.01-10 Trogerite H2(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m

VII/E.01-20 Sabugalite HAl(UO2)4(PO4)4·16(H2O) I 4/mmm 4/m 2/m 2/m

VII/E.01-30 Saleeite Mg(UO2)2(PO4)2·10(H2O) I 4/mmm 4/m 2/m 2/m

VII/E.01-35 Seelite-1 Mg[(UO2)(AsO3)x(AsO4)1-x]2·7(H2O) C 2/m 2/m

VII/E.01-35* Seelite-2 Mg(UO2)(AsO3)x(AsO4)1-x·7(H2O)(x=0.7) C 2/m 2/m

VII/E.01-40 Novacekite Mg(UO2)2(AsO4)2·12(H2O) P 4₁/n 4/m

VII/E.01-50 Kahlerite Fe(UO2)2(AsO4)2·10-12(H2O) P 4₁/n 4/m

VII/E.01-60 Fritzscheite Mn(UO2)2[(V,P)O4]2·4(H2O) Pnam 2/m 2/m 2/m

VII/E.01-70 Torbernite Cu(UO2)2(PO4)2·8-12(H2O) I 4/mmm 4/m 2/m 2/m

VII/E.01-80 Zeunerite Cu(UO2)2(AsO4)2·10-16(H2O) P 4/nnc 4/m 2/m 2/m

VII/E.01-90 Autunite Ca(UO2)2(PO4)2·10-12(H2O) I 4/mmm 4/m 2/m 2/m

VII/E.01-100 Uranospinite Ca(UO2)2(AsO4)2·10(H2O) I 4/mmm 4/m 2/m 2/m

VII/E.01-110 Uranocircite Ba(UO2)2(PO4)2·12(H2O) P 4/nnc 4/m 2/m 2/m

VII/E.01-120 Heinrichite Ba(UO2)2(AsO4)2·10-12(H2O) IA/mmm 4/m 2/m 2/m

VII/E.01-130 Sodium-autunite Na2(UO2)2(PO4)2·8(H2O) P 4/nmm 4/m 2/m 2/m

Other Sodium-autunite Information

References:

PHYS. PROP.(Larousse des Mineraux,1981) OPTIC PROP.(Larousse des Mineraux,1981)

See Also:

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

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Sodium-autunite

Na2(UO2)2(PO4)2·8(H2O)
Dana No: 40.2a.5.1 Strunz No: VII/E.01-130
Locality:

Notes: