Sodium meta-autunite Mineral Data

Sodium meta-autunite Mineral Data

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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.

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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 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 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

Optical Data:

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

Calculated Properties of Sodium meta-autunite

Electron Density:

r_electron=3.19 gm/cc
note: r_{Sodium meta-autunite}=3.58 gm/cc.

Fermion Index

Fermion Index = 0.00396
Boson Index = 0.99604

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 = 4,009,172.73 (Gamma Ray American Petroleum Institute Units)

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	94,463,795	2.55E-03	4,009,172.73	1,318.08
100 gm / 3.76 cm	9,446,380	2.55E-04	400,917.27	131.81
10 gm / 1.75 cm	944,638	2.55E-05	40,091.73	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:

40.2a.1.4 (40)Hydrated Phosphates, etc

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

(40.2a.1)Dana Group

40.2a.1.1 Autunite Ca(UO2)2(PO4)2·10-12(H2O) I 4/mmm 4/m 2/m 2/m

40.2a.1.2 Meta-autunite Ca(UO2)2(PO4)2·2-6(H2O) P 4/nmm 4/m 2/m 2/m

40.2a.1.3 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4·5(H2O)(?) Unk Ortho

40.2a.1.4 Sodium meta-autunite ! Na2(UO2)2(PO4)2·6-8(H2O) P 4/nmm 4/m 2/m 2/m

Strunz Class:

VII/E.02-95 VII - Phosphates, Arsenates and Vanadates

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

VII/E.02 - Meta-autunite group

VII/E.02-10 Metanovacekite Mg(UO2)2(AsO4)2·4-8(H2O) P 4/n 4/m

VII/E.02-20 Bassetite Fe(UO2)2(PO4)2·8(H2O) P 2₁/m 2/m

VII/E.02-30 Metakahlerite Fe(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m

VII/E.02-40 Lehnerite Mn[UO2/PO4]2·8(H2O) P 2₁/n 2/m

VII/E.02-50 Metakirchheimerite Co(UO2)2(AsO4)2·8(H2O) P 4/mmm 4/m 2/m 2/m

VII/E.02-60 Metatorbernite Cu(UO2)2(PO4)2·8(H2O) P 4/n 4/m

VII/E.02-70 Metazeunerite Cu(UO2)2(AsO4)2·8(H2O) P 4/n 4/m

VII/E.02-80 Metalodevite Zn(UO2)2(AsO4)2·10(H2O) P 4₁/m 4/m

VII/E.02-90 Meta-autunite Ca(UO2)2(PO4)2·2-6(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-95 Sodium meta-autunite Na2(UO2)2(PO4)2·6-8(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-100 Meta-uranospinite Ca(UO2)2(AsO4)2·8(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-110 Meta-uranocircite Ba(UO2)2(PO4)2·6-8(H2O) P 2₁ 2

VII/E.02-120 Metaheinrichite Ba(UO2)2(AsO4)2·8(H2O) P 4₁/? 4/m

VII/E.02-130 Sodium-uranospinite (Na2,Ca)(UO2)2(AsO4)2·5(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-140 Meta-ankoleite K2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-150 Abernathyite K(UO2)(AsO4)·4(H2O) P 4/ncc 4/m 2/m 2/m

VII/E.02-160 Uramphite (NH4)(UO2)(PO4)·3(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-170 Chernikovite (H3O)2(UO2)2(PO4)2·6(H2O) P 4/nmm 4/m 2/m 2/m

VII/E.02-180 Pseudo-autunite* (H3O)4Ca2(UO2)2(PO4)4·5(H2O)(?) Unk Ortho

VII/E.02-190 Ulrichite CaCu(UO2)(PO4)2·4(H2O) C 2/m 2/m

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

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Sodium meta-autunite

Na2(UO2)2(PO4)2·6-8(H2O)
Dana No: 40.2a.1.4 Strunz No: VII/E.02-95
Locality:

Notes: