Mineralogy Database

Metauranocircite Mineral Data

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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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  Metauranocircite

Comments: Yellow crystals of meta-uranocircite.
Location: Krunkelbachtal, Baden-Wurttemberg, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

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  Uranocircite   Metauranocircite

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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  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

Comments: Lemon yellow platy meta-uranocircite crystals on matrix.
Location: Schneeberg, Saxony, Germany. Scale: Crystal size 2 mm.
© Tom Loomis / Dakota Matrix

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 - Sphenoidal H-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
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 / 7.85 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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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:

 

 
   
 


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