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Metacalciouranoite Mineral Data

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General Metacalciouranoite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Na,Ba)U2O7•2(H2O)
Help on Composition: Composition: Molecular Weight = 718.40 gm
   Barium     3.82 %  Ba    4.27 % BaO
   Sodium     0.96 %  Na    1.29 % Na2O
   Calcium    2.23 %  Ca    3.12 % CaO
   Uranium   69.58 %  U    83.61 % UO3
   Hydrogen   0.48 %  H     4.26 % H2O
   Lead       2.88 %  Pb    3.11 % PbO
   Oxygen    20.04 %  O
            ______        ______ 
            100.00 %       99.67 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.4Na0.3Ba0.2Pb0.1O2.1(UO3)•1.7(H2O)
Help on Environment: Environment: Oxidation zone of U-Mo deposit. An inadequately described species.
Help on IMA Status: IMA Status: Approved IMA 1973
Help on Locality: Locality: U-Mo deposit in Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named from meta 'change' and calciouranoite indicating it's lower hydrate content.
Help on Name Pronunciation: Name Pronunciation: Metacalciouranoite + Pronunciation Say METACALCIOURANOITE
 

Metacalciouranoite Image

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  Calciouranoite   Metacalciouranoite

Comments: Cryptocrystalline looking, greasy yellow blotches, of amorphous calciouranoite (probably, in part, dehydrated to matacalciouranoite).
Location: Oktyabr'skoye Mo-U deposit, east Transbaikal region, Russia. Scale: See Image.
© Rruff Database

Metacalciouranoite Crystallography

Help on Crystal System: Crystal System: Orthorhombic Space Group: Ortho ?
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.09(1), 1.676(0.67), 1.283(0.67),3.43(0.6), 1.94(0.4), 1.99(0.4), 1.73(0.3), 1.92(0.3),
 

Physical Properties of Metacalciouranoite

Help on Color: Color: Orange.
Help on Density: Density: 4.9
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
 

Optical Properties of Metacalciouranoite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.415 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.1864,KC= 0.1318
Ncalc = 1.65
Help on Optical Data: Optical Data: Biaxial (-), a=1.897, b=1.911, g=1.932, bire=0.0350, 2V(Calc)=80, 2V(Meas)=81.
 

Calculated Properties of Metacalciouranoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.08 gm/cc
note: Specific Gravity of Metacalciouranoite =4.90 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEMetacalciouranoite =1,966.39 barns/electron
U=PEMetacalciouranoite x relectron=8,028.57 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,941,876.04 (Gamma Ray American Petroleum Institute Units)
Concentration of Metacalciouranoite per GRapi unit = 202.35 (PPB)

Metacalciouranoite 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) 6.15 ± 1.54 grams of pure Metacalciouranoite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 615.49 ±153.87 grams of pure Metacalciouranoite .

Estimated Radioactivity from Metacalciouranoite - 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 / 7.30 cm 124,548,420 3.37E-03 4,941,876.04 1,624.73
100 gm / 3.39 cm 12,454,842 3.37E-04 494,187.60 162.47
10 gm / 1.57 cm 1,245,484 3.37E-05 49,418.76 16.25
1 gm / 7.30 mm 124,548 3.37E-06 4,941.88 1.62
0.1 gm / 3.39 mm 12,455 3.37E-07 494.19 0.16
0.01 gm / 1.57 mm 1,245 3.37E-08 49.42 0.02
0.001 gm / 0.73 mm 125 3.37E-09 4.94 0.00

Weight of pure Metacalciouranoite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.90 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
 

Metacalciouranoite Classification

Help on  Dana Class: Dana Class: 05.04.03.01 (05)Oxides Containing Uranium and Thorium
  (05.04)with alkaline-earth elements (hydrated)
  (05.04.03)Dana Group
 
05.04.03.01 Metacalciouranoite (Ca,Na,Ba)U2O7•2(H2O) Ortho ? Ortho
 
05.04.03.02 Wolsendorfite (Pb,Ba,Ca)U2O7•2(H2O) Unk Ortho
Help on  Strunz Class: Strunz Class: 04.GB.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.G - Uranyl Hydroxides
  04.GB -With additional cations (K, Ca, Ba, Pb, etc.); with mainly UO2(O,OH)5 pentagonal polyhedra
 
04.GB.20 Calciouranoite (Ca,Ba,Pb)U2O7•5(H2O) Unk Tri
 
04.GB.20 Bauranoite BaU2O7•4-5(H2O) Triclinic ? Tri
 
04.GB.20 Metacalciouranoite (Ca,Na,Ba)U2O7•2(H2O) Ortho ? Ortho
 

Other Metacalciouranoite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Metacalciouranoite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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Metacalciouranoite

(Ca,Na,Ba)U2O7•2(H2O)
Dana No: 05.04.03.01 Strunz No: 04.GB.20
Locality:

 

Notes:

 

 
   
 


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