Metauranocircite Mineral Data (original) (raw)

General Metauranocircite Information

Help on Chemical Formula: Chemical Formula:

Ba(UO2)2(PO4)2•6-8(H2O)

Help on Composition: Composition:

Molecular Weight = 993.43 gm

Barium 13.82 % Ba 15.43 % BaO

Uranium 47.92 % U 54.36 % UO2

Phosphorus 6.24 % P 14.29 % P2O5

Hydrogen 1.42 % H 12.69 % H2O

Oxygen 30.60 % O

______ ______

100.00 % 96.78 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ba(UO2)2(PO4)2•7(H2O)

Help on Environment: Environment:

Secndary mineral derived from phosphatic uraninite deposits.

Help on IMA Status: IMA Status:

Approved IMA 1982

Help on Locality: Locality:

Bergen, Falkenstein, Vogtland, Sachsen (Saxony), Germany. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for its lower hydrate relationship to uranocercite.

Help on Synonym: Synonym:

Meta-uranocircite - Renamed as Metauranocircite by Mineralogical Record, v330 (2008), p131

Metauranocircite Image

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Click Here for Larger Metauranocircite Image Metauranocircite Uranocircite Comments: Brilliant, fluorescent yellow green crystals of uranocircite altered to meta-uranocircite. Location: Bergen, Vogtland, Saxony, Germany.Scale: 2.3 x 2.2 cm. © John Veevaert

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Click Here for Larger Metauranocircite Image Metauranocircite Uranocircite Comments: Crystal fragment of uranocircite fracturing due to dehydration to meta-uranocircite. The most common are 100 and 010 fractures, with 110 close behind. But notice the 210 and 410 fractures (breaks) as well. Location: .Scale: Crystal size 2x3.5 cm. © Paul M. Schumacher

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Metauranocircite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =1.0001:1:2.5344

Help on Cell Dimensions: Cell Dimensions:

a = 6.965, b = 6.964, c = 17.65, Z = 2; beta = 90.6° V = 856.05 Den(Calc)= 3.85

Help on Crystal System: Crystal System:

Monoclinic - SphenoidalH-M Symbol (2) Space Group: P 21

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.6(1), 8.34(0.9), 4.23(0.4),

Physical Properties of Metauranocircite

Help on Color: Color:

Green.

Help on Density: Density:

3.95

Help on Diaphaneity: Diaphaneity:

Transparent to Translucent

Help on Hardness: Hardness:

2-2.5 - Gypsum-Finger Nail

Help on Luminescence: Luminescence:

Fluorescent.

Help on Luster: Luster:

Pearly

Optical Properties of Metauranocircite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.092 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.12 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1607,KPDmeas= 0.1566,KC= 0.1434
Ncalc = 1.55 - 1.57

Help on Optical Data: Optical Data:

Biaxial (-), a=1.61, b=1.623, g=1.623, bire=0.0130

Help on Pleochroism (x): Pleochroism (x):

colorless.

Help on Pleochroism (y): Pleochroism (y):

colorless.

Help on Pleochroism (z): Pleochroism (z):

colorless.

Calculated Properties of Metauranocircite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.47 gm/cc
note: Specific Gravity of Metauranocircite =3.95 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PEMetauranocircite =1,302.10 barns/electron
U=PEMetauranocircite x relectron=4,514.59 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 3,585,366.40 (Gamma Ray American Petroleum Institute Units)
Concentration of Metauranocircite per GRapi unit = 278.91 (PPB)

Metauranocircite 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) 8.48 ± 2.12 grams of pure Metauranocircite .
Estimated Maximum U.S. Postal Shipping Size(10 mRem/hr limit, Unshielded 100 cm box) 848.36 ±212.09 grams of pure Metauranocircite .

Estimated Radioactivity from Metauranocircite - very strong

SpecimenSizeWeight/Volume(Sphere) * CalculatedActivityBecquerels(Bq) CalculatedActivityCuries (Ci) EstimatedActivityGR(api) EstimatedExposure(mRem**)/hrIf Held in HandFor One Hour
1000 gm / 7.85 cm 85,777,727 2.32E-03 3,585,366.40 1,178.75
100 gm / 3.64 cm 8,577,773 2.32E-04 358,536.64 117.88
10 gm / 1.69 cm 857,777 2.32E-05 35,853.66 11.79
1 gm / 7.85 mm 85,778 2.32E-06 3,585.37 1.18
0.1 gm / 3.64 mm 8,578 2.32E-07 358.54 0.12
0.01 gm / 1.69 mm 858 2.32E-08 35.85 0.01
0.001 gm / 0.78 mm 86 2.32E-09 3.59 0.00

Weight of pure Metauranocircite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.95 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

Metauranocircite Classification

Help on Dana Class: Dana Class:

40.02a.03.02 (40)Hydrated Phosphates, etc

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

(40.02a.03)Dana Group

40.02a.03.01 Uranocircite Ba(UO2)2(PO4)2•12(H2O) P 4/nnc 4/m 2/m 2/m

40.02a.03.02 Metauranocircite Ba(UO2)2(PO4)2•6-8(H2O) P 21 2

Help on Strunz Class: 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 Metauranocircite Information

Help on References: References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990, AmMin 89:1833) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

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

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Ask about Metauranocircite here :
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Print or Cut-and-Paste your Metauranocircite Specimen Label here :

Metauranocircite

Ba(UO2)2(PO4)2•6-8(H2O)
Dana No: 40.02a.03.02 Strunz No: 08.EB.10
Locality:

Notes: