Uranophane-beta Mineral Data

Uranophane-beta Mineral Data
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General Uranophane-beta Information

Help on Chemical Formula: Chemical Formula: Ca[(UO2)SiO3(OH)]2•(H2O)
Help on Composition: Composition: Molecular Weight = 784.33 gm
   Calcium    5.11 %  Ca    7.15 % CaO
   Uranium   60.70 %  U    68.86 % UO2
   Silicon    7.16 %  Si   15.32 % SiO2
   Hydrogen   0.51 %  H     4.59 % H2O
   Oxygen    26.52 %  O
            ______        ______ 
            100.00 %       95.92 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2(UO2)2(SiO3)2(OH)•(H2O)
Help on Environment: Environment: An oxidation product of uraninite found in oxidized ores and pegmatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1935
Help on Locality: Locality: Joachinsthal (Jachymov) Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the polymorph of uranophane.
Help on Name Pronunciation: Name Pronunciation: Uranophane-beta + Pronunciation Say URANOPHANE-BETA
Help on Synonym: Synonym: Beta-uranophane
  Beta-uranotile
  Uranotile-beta
 

Uranophane-beta Image

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Uranophane-beta

Comments: Bright yellow uranophane-beta crystalline aggregates.
Location: Rossing mine, Rossing, Namibia. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Uranophane-beta Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.9043:1:0.4294
Help on Cell Dimensions: Cell Dimensions: a = 13.966, b = 15.443, c = 6.632, Z = 4; beta = 91.38° V = 1,429.95 Den(Calc)= 3.64
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.83(1), 3.9(0.9), 3.51(0.6),
Click Here for Large Uranophane-beta Structure Window Crystal Structure:

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Viswanathan K , Harneit O , American Mineralogist , 71 (1986) p.1489-1493, Refined crystal structure of beta-uranophane, Ca(UO2)2(SiO3OH)2.5H2O

 

Physical Properties of Uranophane-beta

Help on Cleavage: Cleavage: {010} Perfect, {100} Poor
Help on Color: Color: Green, Yellow.
Help on Density: Density: 3.9
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luminescence: Luminescence: Fluorescent, Short UV=weak green, Long UV=weak green.
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: pale yellow
 

Optical Properties of Uranophane-beta

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.334 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.429 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1877,KPDmeas= 0.1752,KC= 0.1314
Ncalc = 1.48 - 1.51
Help on Optical Data: Optical Data: Biaxial (-), a=1.661-1.671, b=1.682-1.694, g=1.689-1.702, bire=0.0280-0.0310, 2V(Calc)=58-60, 2V(Meas)=0-71. Dispersion r > v strong.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): deep yellow.
Help on Pleochroism (z): Pleochroism (z): deep yellow.
 

Calculated Properties of Uranophane-beta

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.38 gm/cc
note: Specific Gravity of Uranophane-beta =3.90 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0079116471
Boson Index = 0.9920883529
Help on Photoelectric: Photoelectric: PEUranophane-beta =1,589.36 barns/electron
U=PEUranophane-beta x relectron=5,373.98 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 4,485,427.49 (Gamma Ray American Petroleum Institute Units)
Concentration of Uranophane-beta per GRapi unit = 222.94 (PPB)

Uranophane-beta 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) 6.78 ± 1.70 grams of pure Uranophane-beta .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 678.12 ±169.53 grams of pure Uranophane-beta .

Estimated Radioactivity from Uranophane-beta - 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 / 7.88 cm 108,645,932 2.94E-03 4,485,427.49 1,474.66
100 gm / 3.66 cm 10,864,593 2.94E-04 448,542.75 147.47
10 gm / 1.70 cm 1,086,459 2.94E-05 44,854.27 14.75
1 gm / 7.88 mm 108,646 2.94E-06 4,485.43 1.47
0.1 gm / 3.66 mm 10,865 2.94E-07 448.54 0.15
0.01 gm / 1.70 mm 1,086 2.94E-08 44.85 0.01
0.001 gm / 0.79 mm 109 2.94E-09 4.49 0.00

Weight of pure Uranophane-beta in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.90 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
 

Uranophane-beta Classification
Help on Dana Class: Dana Class: 53.03.01.09 (53)Nesosilicate Insular SiO4 Groups and Other Anions of Complex Cations
  (53.03)with (UO2)
  (53.03.01)Uranophane group
 
53.03.01.01 Kasolite Pb(UO2)SiO4•(H2O) P 21/a 2/m
 
53.03.01.02 Uranophane Ca(UO2)2SiO3(OH)2•5(H2O) P 21 2
 
53.03.01.03 Sklodowskite (H3O)2Mg(UO2)2(SiO4)2•4(H2O) C 2/m 2/m
 
53.03.01.04 Cuprosklodowskite Cu[(UO2)(SiO2OH)]2•6(H2O) P1 1
 
53.03.01.05 Boltwoodite HK(UO2)(SiO4)•1.5(H2O) P 21 2
 
53.03.01.06 Natroboltwoodite (H3O)(Na,K)(UO2)SiO4•(H2O) P 212121 2 2 2
 
53.03.01.07 Oursinite (Co,Mg)(H3O)2[(UO2)SiO4]2•3(H2O) Aba2,Abam Ortho
 
53.03.01.08 Swamboite UH6(UO2)6(SiO4)6•30(H2O) P 21/a 2/m
 
53.03.01.09 Uranophane-beta Ca[(UO2)SiO3(OH)]2•(H2O) P 21/a 2/m
Help on Strunz Class: Strunz Class: 08.CG.05 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CG -With large and medium-sized cations, RO4:H2O = 1:1
 
08.CG.05 Collinsite Ca2(Mg,Fe)(PO4)2•2(H2O) P1 1
 
08.CG.05 Gaitite Ca2Zn(AsO4)2•2(H2O) P1 1
 
08.CG.05 Cassidyite Ca2(Ni,Mg)(PO4)2•2(H2O) P1 1
 
08.CG.05 Fairfieldite Ca2(Mn,Fe)(PO4)2•2(H2O) P1 1
 
08.CG.05 Messelite Ca2(Fe,Mn)(PO4)2•2(H2O) P1 1
 
08.CG.05 Parabrandtite Ca2Mn(AsO4)•2(H2O) P1,P 1 Tri
 
08.CG.05 Uranophane-beta Ca[(UO2)SiO3(OH)]2•(H2O) P 21/a 2/m
 
08.CG.05 Talmessite Ca2Mg(AsO4)2•2(H2O) P1 1
 
08.CG.05 Hillite! Ca2(Zn,Mg)[PO4]2•2(H2O) P1 1
 

Other Uranophane-beta Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Uranophane-beta :
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 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - Uranium Minerals

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Print or Cut-and-Paste your Uranophane-beta Specimen Label here :

Uranophane-beta

Ca[(UO2)SiO3(OH)]2•(H2O)
Dana No: 53.03.01.09 Strunz No: 08.CG.05
Locality:

 

Notes: