Natrouranospinite Mineral Data

General Natrouranospinite Information

Chemical Formula:

(Na2,Ca)(UO2)2(AsO4)2•5(H2O)

Composition:

Molecular Weight = 952.47 gm

Sodium 3.62 % Na 4.88 % Na₂O

Calcium 1.05 % Ca 1.47 % CaO

Uranium 49.98 % U 56.70 % UO₂

Arsenic 15.73 % As 24.13 % As₂O₅

Hydrogen 1.06 % H 9.46 % H₂O

Oxygen 28.56 % O

______ ______

100.00 % 96.64 % = TOTAL OXIDE

Empirical Formula:

Na_1.5Ca_0.25(UO₂)₂(AsO₄)₂•5(H₂O)

Environment:

Found in pitchblend-S deposits.

IMA Status:

Valid Species (Pre-IMA) 1953

Locality:

Unspecified locality in Russia. Link to MinDat.org Location Data.

Name Origin:

Named for the relationship to uranospinite

Synonym:

Meta-natrium-uranospinite

Sodium uranospinite - Renamed to Natrouranospinite by Mineralogical Record, v39 (2008), p131

Natrouranospinite Crystallography

Axial Ratios:

a:c = 1:1.20926

Cell Dimensions:

a = 7.12, c = 8.61, Z = 1; V = 436.48 Den(Calc)= 3.62

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): 8.42(1), 3.63(0.9), 3.27(0.8),

Physical Properties of Natrouranospinite

Color:

Green, Lemon yellow, Straw yellow.

Density:

3.846

Diaphaneity:

Transparent to Translucent

Hardness:

2.5 - Finger Nail

Luster:

Vitreous - Pearly

Optical Properties of Natrouranospinite

Gladstone-Dale:

CI meas= -0.109 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.178 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1653,KPDmeas= 0.1556,KC= 0.1403
Ncalc = 1.51 - 1.54

Optical Data:

Uniaxial (-), e=1.585, w=1.612, bire=0.0270.

Calculated Properties of Natrouranospinite

Electron Density:

Bulk Density (Electron Density)=3.37 gm/cc
note: Specific Gravity of Natrouranospinite =3.85 gm/cc.

Fermion Index:

Fermion Index = 0.0037515021
Boson Index = 0.9962484979

Photoelectric:

PE_{Natrouranospinite}=1,305.33 barns/electron
U=PE_{Natrouranospinite} x r_electron=4,401.13 barns/cc.

Radioactivity:

GRapi = 3,734,851.38 (Gamma Ray American Petroleum Institute Units)
Concentration of Natrouranospinite per GRapi unit = 267.75 (PPB)

Natrouranospinite 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) 8.14 ± 2.04 grams of pure Natrouranospinite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 814.40 ±203.60 grams of pure Natrouranospinite .

**Estimated Radioactivity from Natrouranospinite** - 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 / 7.92 cm	89,466,290	2.42E-03	3,734,851.38	1,227.90
100 gm / 3.68 cm	8,946,629	2.42E-04	373,485.14	122.79
10 gm / 1.71 cm	894,663	2.42E-05	37,348.51	12.28
1 gm / 7.92 mm	89,466	2.42E-06	3,734.85	1.23
0.1 gm / 3.68 mm	8,947	2.42E-07	373.49	0.12
0.01 gm / 1.71 mm	895	2.42E-08	37.35	0.01
0.001 gm / 0.79 mm	89	2.42E-09	3.73	0.00

Weight of pure Natrouranospinite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.85 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

Natrouranospinite Classification

Dana Class:

40.02a.06.01 (40)Hydrated Phosphates, etc

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

(40.02a.06)Dana Group

40.02a.06.01 Natrouranospinite (Na2,Ca)(UO2)2(AsO4)2•5(H2O) P 4/nmm 4/m 2/m 2/m

Strunz Class:

08.EB.15 08 - PHOSPHATES, ARSENATES, VANADATES

08.E - Uranyl Phosphates and Arsenates

08.EB -UO2:RO4 = 1:1

08.EB.15 Abernathyite K(UO2)(AsO4)•4(H2O) P 4/ncc 4/m 2/m 2/m

08.EB.15 Chernikovite (H3O)2(UO2)2(PO4)2•6(H2O) P 4/nmm 4/m 2/m 2/m

08.EB.15 Meta-ankoleite K2(UO2)2(PO4)2•6(H2O) P 4/nmm 4/m 2/m 2/m

08.EB.15 Natrouranospinite (Na2,Ca)(UO2)2(AsO4)2•5(H2O) P 4/nmm 4/m 2/m 2/m

08.EB.15 Uramphite (NH4)(UO2)(PO4)•3(H2O) P 4/nmm 4/m 2/m 2/m

08.EB.15 Trogerite H2(UO2)2(AsO4)2•8(H2O) P 4/mmm 4/m 2/m 2/m

08.EB.15 Uramarsite! (NH4,H3O)2(UO2)2(AsO4,PO4)2•6H2O P 4/mmm 4/m 2/m 2/m

Other Natrouranospinite Information

References:

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

See Also:

Links to other databases for Natrouranospinite :
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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Natrouranospinite

(Na2,Ca)(UO2)2(AsO4)2•5(H2O)
Dana No: 40.02a.06.01 Strunz No: 08.EB.15
Locality:

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