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Calciouranoite Mineral Data

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General Calciouranoite Information

Help on Chemical  Formula: Chemical Formula: (Ca,Ba,Pb)U2O7•5(H2O)
Help on Composition: Composition: Molecular Weight = 667.92 gm
   Barium     2.06 %  Ba    2.30 % BaO
   Sodium     0.34 %  Na    0.46 % Na2O
   Calcium    4.20 %  Ca    5.88 % CaO
   Uranium   60.58 %  U    72.80 % UO3
   Hydrogen   1.45 %  H    12.95 % H2O
   Lead       3.10 %  Pb    3.34 % PbO
   Oxygen    28.27 %  O
            ______        ______ 
            100.00 %       97.72 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.7Ba0.1Pb0.1Na0.1U1.7O7•4.8(H2O)
Help on Environment: Environment: In felsite stringers, deep in the oxidation zone of a U-Mo deposit, in water-saturated ore-bearing faults.
Help on IMA Status: IMA Status: Approved IMA 1974
Help on Locality: Locality: Streltsovskoe U-Mo deposit, eastern Transbaikal, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for CALCIum and URANium in the composition.
Help on Name Pronunciation: Name Pronunciation: Calciouranoite Say CALCIOURANOITE

Calciouranoite 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

Calciouranoite Crystallography

Help on Crystal System: Crystal System: Triclinic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.05(1), 3.406(1), 4(1),

Physical Properties of Calciouranoite

Help on Cleavage: Cleavage: {hk0} Distinct, {hk0} Distinct
Help on Color: Color: Brown, Orange, Orange brown, Red orange.
Help on Density: Density: 4.62
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Greasy (Oily)

Optical Properties of Calciouranoite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.184 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.1782,KC= 0.1505
Ncalc = 1.7
Help on Optical Data: Optical Data: Biaxial (-), a=1.76, b=1.84, g=1.87, bire=0.1100
Help on Pleochroism (x): Pleochroism (x): deep lemon yellow.
Help on Pleochroism (y): Pleochroism (y): deep lemon yellow.
Help on Pleochroism (z): Pleochroism (z): very pale yellow.

Calculated Properties of Calciouranoite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.00 gm/cc
note: Specific Gravity of Calciouranoite =4.62 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PECalciouranoite =1,651.81 barns/electron
U=PECalciouranoite x relectron=6,610.77 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,473,381.76 (Gamma Ray American Petroleum Institute Units)
Concentration of Calciouranoite per GRapi unit = 223.54 (PPB)

Calciouranoite 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) 6.80 ± 1.70 grams of pure Calciouranoite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 679.95 ±169.99 grams of pure Calciouranoite .

Estimated Radioactivity from Calciouranoite - very strong
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 7.45 cm 108,443,677 2.93E-03 4,473,381.76 1,470.70
100 gm / 3.46 cm 10,844,368 2.93E-04 447,338.18 147.07
10 gm / 1.60 cm 1,084,437 2.93E-05 44,733.82 14.71
1 gm / 7.45 mm 108,444 2.93E-06 4,473.38 1.47
0.1 gm / 3.46 mm 10,844 2.93E-07 447.34 0.15
0.01 gm / 1.60 mm 1,084 2.93E-08 44.73 0.01
0.001 gm / 0.74 mm 108 2.93E-09 4.47 0.00

Weight of pure Calciouranoite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.62 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

Calciouranoite Classification

Help on  Dana Class: Dana Class: (05)Oxides Containing Uranium and Thorium
  (05.04)with alkaline-earth elements (hydrated)
  (05.04.02)Uranoite Series Calciouranoite (Ca,Ba,Pb)U2O7•5(H2O) Unk Tri Bauranoite BaU2O7•4-5(H2O) Triclinic ? Tri
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 Calciouranoite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(AntBidBlaNic3) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Calciouranoite :
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 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - Uranium Minerals

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Dana No: Strunz No: 04.GB.20





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