Mineralogy Database

Uranopolycrase Mineral Data

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General Uranopolycrase Information

Help on Chemical  Formula: Chemical Formula: (U,Y)(Ti,Nb,Ta)2O6
Help on Composition: Composition: Molecular Weight = 415.77 gm
   Yttrium    6.42 %  Y     8.15 % Y2O3
   Thorium    5.58 %  Th    6.35 % ThO2
   Uranium   34.35 %  U    38.97 % UO2
   Tantalum   4.35 %  Ta    5.31 % Ta2O5
   Titanium  17.27 %  Ti   28.82 % TiO2
   Niobium    8.94 %  Nb   12.79 % Nb2O5
   Oxygen    23.09 %  O
            ______        ______ 
            100.00 %      100.38 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: U0.6Y0.3Th0.1Ti1.5Nb0.4Ta0.1O6
Help on Environment: Environment: Zoned pegmatite vein near the contact with granodiorite.
Help on IMA Status: IMA Status: Approved IMA 1993
Help on Locality: Locality: San Piero in Campo, Elba, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its content or URANium and relation to polycrase.
Help on Name Pronunciation: Name Pronunciation: Uranopolycrase + Pronunciation Say URANOPOLYCRASE
Help on Synonym: Synonym: IMA1990-046
 

Uranopolycrase Image

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  Uranopolycrase

Comments: Brownish-black uranopolycrase microcrystals on quartz.
Location: Fonte del Prete, near San Piero in Campo, Elba, Tuscany, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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  Uranopolycrase

Comments: Brown to black, paper thin, elongated uranopolycrase crystals to 1mm.
Location: Cavetta Bassa, Elba Isle, Livorno Province, Tuscany, Italy. Scale: Picture size 2 mm.
© Tom Loomis / Dakota Matrix

Uranopolycrase Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.6106:1:0.9307
Help on Cell Dimensions: Cell Dimensions: a = 14.51, b = 5.558, c = 5.173, Z = 3; V = 417.18 Den(Calc)= 4.96
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P bcn
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.99(1), 1.9(0.5), 1.48(0.4),
 

Physical Properties of Uranopolycrase

Help on Cleavage: Cleavage: {100} Good
Help on Color: Color: Brown red.
Help on Density: Density: 5.5 - 6, Average = 5.75
Help on Diaphaneity: Diaphaneity: Opaque
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luminescence: Luminescence: Radioactive.
Help on Luster: Luster: Adamantine
Help on Streak: Streak: grayish brown
 

Optical Properties of Uranopolycrase

Help on Optical Data: Optical Data: Isotropic.
  NCalc= 2.09 - from Gladstone-Dale relationship (KC = 0.219) where Ncalc=Dcalc*KC+1
NCalc= 2.26 - from Gladstone-Dale relationship (KC = 0.219) where Ncalc=Dmeas*KC+1
Help on RL Color: RL Color: Pale gray with bluish tint and dark red-brown internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Uranopolycrase in Air
λ R  ∑ R(λ) 
 470 nm   23.60   
 546 nm   21.50 
 589 nm   22.30 
 650 nm   25.10 
Calculated Relative Intensity Colors of Uranopolycrase in Air
Relative
Intensity
   0%   50% 100% 150% 200% 250% 300% 350% 400%
R                  
 

Calculated Properties of Uranopolycrase

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.31 gm/cc
note: Specific Gravity of Uranopolycrase =4.96 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEUranopolycrase =1,110.12 barns/electron
U=PEUranopolycrase x relectron=4,783.56 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 2,647,118.56 (Gamma Ray American Petroleum Institute Units)
Concentration of Uranopolycrase per GRapi unit = 377.77 (PPB)

Uranopolycrase 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) 11.49 ± 2.87 grams of pure Uranopolycrase .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 1149.0 ±287.26 grams of pure Uranopolycrase .

Estimated Radioactivity from Uranopolycrase - 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 / 7.28 cm 63,987,419 1.73E-03 2,647,118.56 870.29
100 gm / 3.38 cm 6,398,742 1.73E-04 264,711.86 87.03
10 gm / 1.57 cm 639,874 1.73E-05 26,471.19 8.70
1 gm / 7.28 mm 63,987 1.73E-06 2,647.12 0.87
0.1 gm / 3.38 mm 6,399 1.73E-07 264.71 0.09
0.01 gm / 1.57 mm 640 1.73E-08 26.47 0.01
0.001 gm / 0.73 mm 64 1.73E-09 2.65 0.00

Weight of pure Uranopolycrase in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.96 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
 

Uranopolycrase Classification

Help on  Dana Class: Dana Class: 08.03.08.05 (08)Multiple Oxides with Nb, Ta, and Ti
  (08.03)where A (B2O6)
  (08.03.08)Polycrase Group
 
08.03.08.01 Polycrase-(Y) (Y,Ca,Ce,U,Th)(Ti,Nb,Ta)2O6 Pcan 2/m 2/m 2/m
 
08.03.08.02 Euxenite-(Y) (Y,Ca,Ce)(Nb,Ta,Ti)2O6 Pcan 2/m 2/m 2/m
 
08.03.08.03 Tanteuxenite-(Y) (Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6 Pcan 2/m 2/m 2/m
 
08.03.08.04 Yttrocrasite-(Y) (Y,Th,Ca,U)(Ti,Fe)2(O,OH)6 Unk Ortho
 
08.03.08.05 Uranopolycrase (U,Y)(Ti,Nb,Ta)2O6 P bcn 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 04.DG.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DG -With large (� medium-sized) cations; chains of edge-sharing octahedra
 
04.DG.05 Fersmite (Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6 Pcan 2/m 2/m 2/m
 
04.DG.05 Euxenite-(Y) (Y,Ca,Ce)(Nb,Ta,Ti)2O6 Pcan 2/m 2/m 2/m
 
04.DG.05 Kobeite-(Y) (Y,U)(Ti,Nb)2(O,OH)6(?) Cubic Cubic
 
04.DG.05 Loranskite-(Y) (Y,Ce,Ca)ZrTaO6(?) Unk Ortho
 
04.DG.05 Polycrase-(Y) (Y,Ca,Ce,U,Th)(Ti,Nb,Ta)2O6 Pcan 2/m 2/m 2/m
 
04.DG.05 Tanteuxenite-(Y) (Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6 Pcan 2/m 2/m 2/m
 
04.DG.05 Uranopolycrase (U,Y)(Ti,Nb,Ta)2O6 P bcn 2/m 2/m 2/m
 
04.DG.05 Yttrocrasite-(Y) (Y,Th,Ca,U)(Ti,Fe)2(O,OH)6 Unk Ortho
 

Other Uranopolycrase Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.79,p766,1994) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Uranopolycrase :
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
16 - WWW-MINCRYST

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Print or Cut-and-Paste your Uranopolycrase Specimen Label here :

Uranopolycrase

(U,Y)(Ti,Nb,Ta)2O6
Dana No: 08.03.08.05 Strunz No: 04.DG.05
Locality:

 

Notes:

 

 
   
 


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