Metauranospinite Mineral Data

General Metauranospinite Information

Chemical Formula:

Ca(UO2)2(AsO4)2•8(H2O)

Composition:

Molecular Weight = 1,002.09 gm

Calcium 4.00 % Ca 5.60 % CaO

Uranium 47.51 % U 53.89 % UO₂

Arsenic 14.95 % As 22.94 % As₂O₅

Hydrogen 1.61 % H 14.38 % H₂O

Oxygen 31.93 % O

______ ______

100.00 % 96.81 % = TOTAL OXIDE

Empirical Formula:

Ca(UO₂)₂(AsO₄)₂•8(H₂O)

Environment:

Secondary mineral of the oxide zone in a hydrothermal polymetallic barite–fluorite deposit.

IMA Status:

Valid Species (Pre-IMA) 1957

Locality:

Clara mine, near Oberwolfach, Black Forest, Germany. Link to MinDat.org Location Data.

Name Origin:

The prefix meta indicates the dehydration product of uranospinite.

Synonym:

Meta-uranospinite - Renamed as Metauranospinite by Mineralogical Record, v330 (2008), p131

Metauranospinite Image

Images:

Click Here for Larger Metauranospinite Image

Metauranospinite Uranospinite

Comments: Translucent platy uranospinite (probably dehydrated to metauranospinite) microcrystals on matrix.
Location: Grube Buhlskopf, near Ellweiler, Rheinland-Pfalz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Metauranospinite Crystallography

Axial Ratios:

a:c = 1:2.38095

Cell Dimensions:

a = 7.14, c = 17, Z = 2; V = 866.65 Den(Calc)= 3.84

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): 3.57(1), 8.65(1), 3.31(0.9),

Physical Properties of Metauranospinite

Color:

Yellow, Siskin green.

Diaphaneity:

Transparent to Translucent

Hardness:

2-3 - Gypsum-Calcite

Luster:

Pearly

Optical Properties of Metauranospinite

Gladstone-Dale:

CI calc= -0.048 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1589,KC= 0.1517
Ncalc = 1.58

Optical Data:

Biaxial (-), a=1.591, b=1.619, g=1.621, bire=0.0300, 2V(Calc)=28, 2V(Meas)=0-5.

Calculated Properties of Metauranospinite

Electron Density:

Bulk Density (Electron Density)=3.42 gm/cc
note: Specific Gravity of Metauranospinite =3.84 gm/cc.

Fermion Index:

Fermion Index = 0.0036301331
Boson Index = 0.9963698669

Photoelectric:

PE_{Metauranospinite}=1,222.30 barns/electron
U=PE_{Metauranospinite} x r_electron=4,177.97 barns/cc.

Radioactivity:

GRapi = 3,604,469.20 (Gamma Ray American Petroleum Institute Units)
Concentration of Metauranospinite per GRapi unit = 277.43 (PPB)

Metauranospinite 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) 8.44 ± 2.11 grams of pure Metauranospinite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 843.86 ±210.96 grams of pure Metauranospinite .

**Estimated Radioactivity from Metauranospinite** - 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 / 7.92 cm	85,036,277	2.30E-03	3,604,469.20	1,185.03
100 gm / 3.68 cm	8,503,628	2.30E-04	360,446.92	118.50
10 gm / 1.71 cm	850,363	2.30E-05	36,044.69	11.85
1 gm / 7.92 mm	85,036	2.30E-06	3,604.47	1.19
0.1 gm / 3.68 mm	8,504	2.30E-07	360.45	0.12
0.01 gm / 1.71 mm	850	2.30E-08	36.04	0.01
0.001 gm / 0.79 mm	85	2.30E-09	3.60	0.00

Weight of pure Metauranospinite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.84 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

Metauranospinite Classification

Dana Class:

40.02a.02.02 (40)Hydrated Phosphates, etc

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

(40.02a.02)Dana Group

40.02a.02.01 Uranospinite Ca(UO2)2(AsO4)2•10(H2O) P nma 2/m 2/m 2/m

40.02a.02.02 Metauranospinite Ca(UO2)2(AsO4)2•8(H2O) P 4/nmm 4/m 2/m 2/m

Strunz Class:

08.EB.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.E - Uranyl Phosphates and Arsenates

08.EB -UO2:RO4 = 1:1

08.EB.10 Bassetite Fe(UO2)2(PO4)2•8(H2O) P 2₁/m 2/m

08.EB.10 Lehnerite Mn[UO2/PO4]2•8(H2O) P 2₁/n 2/m

08.EB.10 Metazeunerite Cu(UO2)2(AsO4)2•8(H2O) P 4/n 4/m

08.EB.10 Meta-autunite Ca(UO2)2(PO4)2•2-6(H2O) P 4/nmm 4/m 2/m 2/m

08.EB.10 Metauranocircite Ba(UO2)2(PO4)2•6-8(H2O) P 2₁ 2

08.EB.10 Metauranospinite Ca(UO2)2(AsO4)2•8(H2O) P 4/nmm 4/m 2/m 2/m

08.EB.10 Metaheinrichite Ba(UO2)2(AsO4)2•8(H2O) P 2₁ 2

08.EB.10 Metakahlerite Fe(UO2)2(AsO4)2•8(H2O) P 4/mmm 4/m 2/m 2/m

08.EB.10 Metakirchheimerite Co(UO2)2(AsO4)2•8(H2O) P 4/mmm 4/m 2/m 2/m

08.EB.10 Metalodevite Zn(UO2)2(AsO4)2•10(H2O) P 4₁/m 4/m

08.EB.10 Metanovacekite Mg(UO2)2(AsO4)2•4-8(H2O) P 4/n 4/m

08.EB.10 Metatorbernite Cu(UO2)2(PO4)2•8(H2O) P 4/n 4/m

08.EB.10 Przhevalskite Pb(UO2)2(PO4)2•4(H2O) Unk Tetra

Other Metauranospinite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Metauranospinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Print or Cut-and-Paste your Metauranospinite Specimen Label here :

Metauranospinite

Ca(UO2)2(AsO4)2•8(H2O)
Dana No: 40.02a.02.02 Strunz No: 08.EB.10
Locality:

Notes: