Uranpyrochlore  Mineral Data

Uranpyrochlore Mineral Data

Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About

Advertisment
Exceptional Minerals features excellent, high quality mineral specimens for sale. We also have a weekly Best Offer Mineral Auction.
Your premier supplier of quality mineral specimens from Southern Africa and the world at large
For more than thirty (30) years, Excalibur Mineral Corp. has been providing private collectors, researchers, major universities and museums throughout the world with reliably identified, rare and unusual mineral samples for science an
Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.

General Uranpyrochlore Information

Help on Chemical  Formula: Chemical Formula: (U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
Help on Composition: Composition: Molecular Weight = 541.23 gm
   Calcium    5.18 %  Ca    7.25 % CaO
   Cerium    20.71 %  Ce   24.26 % Ce2O3
   Uranium   17.59 %  U    19.96 % UO2
   Tantalum  16.72 %  Ta   20.41 % Ta2O5
   Niobium   18.88 %  Nb   27.01 % Nb2O5
   Hydrogen   0.17 %  H     1.50 % H2O
   Oxygen    20.40 %  O
   Fluorine   0.35 %  F     0.35 % F
               -   %   F    -0.15 % -O=F2    
            ______        ______ 
            100.00 %      100.59 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: U0.4Ca0.7Ce0.8Nb1.1Ta0.5O6(OH)0.9F0.1
Help on Environment: Environment: Cemented calcareous tuffs associated with carbonatite.
Help on IMA Status: IMA Status: Approved IMA 1977
Help on Locality: Locality: Kasenda, Fort Portal area, Uganda. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its URANium content and membership in the pyrochlore group.
Help on Name Pronunciation: Name Pronunciation: Uranpyrochlore + Pronunciation Say URANPYROCHLORE
Help on Synonym: Synonym: Hatchettolite
 

Uranpyrochlore Image

Click Here for Larger Uranpyrochlore Image in a New Browser Window Images:
Click Here for Larger Uranpyrochlore Image

Uranpyrochlore   Samarskite-(Y)

Comments: Deep greenish-brown resinous crystalline massive uranpyrochlore with black samarskite-(Y).
Location: Beryl Hill, near Yinnietharra Station, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Uranpyrochlore Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 10.44, Z = 8; V = 1,137.89 Den(Calc)= 6.32
Help on Crystal System: Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.01(1), 1.84(0.8), 1.575(0.6),7.3(0.4), 2.61(0.3), 1.202(0.2), 1.168(0.2),
 

Physical Properties of Uranpyrochlore

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellow brown, Red, Reddish brown, Black.
Help on Density: Density: 4.8
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Octahedral Crystals - Occurs as octahedral shaped crystals.
Help on Hardness: Hardness: 5 - Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Resinous
Help on Streak: Streak: brownish yellow
 

Optical Properties of Uranpyrochlore

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.143 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.132 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1551,KPDmeas= 0.2042,KC= 0.1786
Ncalc = 1.86 - 2.13
Help on Optical Data: Optical Data: Isotropic, n=1.98.
 

Calculated Properties of Uranpyrochlore

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.51 gm/cc
note: Specific Gravity of Uranpyrochlore =6.32 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0014547919
Boson Index = 0.9985452081
Help on Photoelectric: Photoelectric: PEUranpyrochlore = 796.68 barns/electron
U=PEUranpyrochlore x relectron=4,387.24 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 1,325,812.01 (Gamma Ray American Petroleum Institute Units)
Concentration of Uranpyrochlore per GRapi unit = 754.25 (PPB)

Uranpyrochlore 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) 22.94 ± 5.74 grams of pure Uranpyrochlore .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 2294.2 ±573.55 grams of pure Uranpyrochlore .

Estimated Radioactivity from Uranpyrochlore - 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 / 6.71 cm 31,952,945 8.64E-04 1,325,812.01 435.88
100 gm / 3.11 cm 3,195,295 8.64E-05 132,581.20 43.59
10 gm / 1.45 cm 319,529 8.64E-06 13,258.12 4.36
1 gm / 6.71 mm 31,953 8.64E-07 1,325.81 0.44
0.1 gm / 3.11 mm 3,195 8.64E-08 132.58 0.04
0.01 gm / 1.45 mm 320 8.64E-09 13.26 0.00
0.001 gm / 0.67 mm 32 8.64E-10 1.33 0.00

Weight of pure Uranpyrochlore in grams (gm) and Calculated Diameter of a Sphere with a Density of 6.32 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
Estimated Thorium Activity ( 1.04 % Th) From Sum REE Elements (20.71 % REE)
 

Uranpyrochlore Classification

Help on  Dana Class: Dana Class: 08.02.01.07 (08)Multiple Oxides with Nb, Ta, and Ti
  (08.02)where (A)2 (B2O6) (O,OH,F)
  (08.02.01)Pyrochlore Group (Pyrochlore Subgroup; Nb>Ta;(Nb+Ta)>2(Ti)
 
08.02.01.01 Pyrochlore (Na,Ca)2Nb2O6(OH,F) F d3m 4/m 3 2/m
 
08.02.01.02 Kalipyrochlore (H2O,Sr)(Nb,Ti)(O,OH)6•(H2O,K) F d3m 4/m 3 2/m
 
08.02.01.03 Bariopyrochlore (Ba,Sr)(Nb,Ti)2(O,OH)7 F d3m 4/m 3 2/m
 
08.02.01.04 Yttropyrochlore-(Y) (Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7 F d3m 2/m 3
 
08.02.01.05 Ceriopyrochlore-(Ce) (Ce,Ca,Y)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m
 
08.02.01.06 Plumbopyrochlore (Pb,Y,U,Ca)2-xNb2O6(OH) F d3m 4/m 3 2/m
 
08.02.01.07 Uranpyrochlore (U,Ca,Ce)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m
 
08.02.01.08 Strontiopyrochlore* Sr2Nb2(O,OH)7 F d3m 4/m 3 2/m
 
08.02.01.09 Bismutopyrochlore! (Bi,U,Ca,Pb)1x(Nb,Ta)2O6(OH)•n(H2O) F d3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 04.DH.15 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DH -With large (± medium-sized) cations; sheets of edge-sharing octahedra
 
04.DH.15 Alumotungstite (W,Al)(O,OH)3(?) Unk Cubic
 
04.DH.15 Betafite (Ca,U)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Ferritungstite (K,Ca,Na)(W,Fe)2(O,OH)6•(H2O) F d3m 4/m 3 2/m
 
04.DH.15 Cesstibtantite (Cs,Na)SbTa4O12 F d3m 4/m 3 2/m
 
04.DH.15 Bismutomicrolite (Bi,Ca)(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Ceriopyrochlore-(Ce) (Ce,Ca,Y)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m
 
04.DH.15 Bariopyrochlore (Ba,Sr)(Nb,Ti)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Bariomicrolite Ba(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Calciobetafite Ca2(Ti,Nb)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Jixianite Pb(W,Fe)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Plumbomicrolite (Pb,Ca,U)2Ta2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Kalipyrochlore (H2O,Sr)(Nb,Ti)(O,OH)6•(H2O,K) F d3m 4/m 3 2/m
 
04.DH.15 Plumbopyrochlore (Pb,Y,U,Ca)2-xNb2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Strontiopyrochlore* Sr2Nb2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Uranmicrolite (U,Ca)2(Ta,Nb)2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Pyrochlore (Na,Ca)2Nb2O6(OH,F) F d3m 4/m 3 2/m
 
04.DH.15 Microlite (Na,Ca)2Ta2O6(O,OH,F) F d3m 4/m 3 2/m
 
04.DH.15 Natrobistantite (Na,Cs)Bi(Ta,Nb,Sb)4O12 F d3m 4/m 3 2/m
 
04.DH.15 Plumbobetafite (Pb,U,Ca)(Ti,Nb)2O6(OH,F) F d3m 4/m 3 2/m
 
04.DH.15 Stibiomicrolite (Sb,Ca,Na)2(Ta,Nb)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Stannomicrolite (Sn,Fe,Mn)(Ta,Nb,Sn)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Stibiobetafite (Sb,Ca)2(Ti,Nb,Ta)2(O,OH)7 F d3m 4/m 3 2/m
 
04.DH.15 Uranpyrochlore (U,Ca,Ce)2(Nb,Ta)2O6(OH,F) F d3m 4/m 3 2/m
 
04.DH.15 Bismutopyrochlore! (Bi,U,Ca,Pb)1x(Nb,Ta)2O6(OH)•n(H2O) F d3m 4/m 3 2/m
 
04.DH.15 Fluornatromicrolite! (Na,Ca,Bi)2Ta2O6F F d3m 4/m 3 2/m
 
04.DH.15 Yttrobetafite-(Y) (Y,U,Ce)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m
 
04.DH.15 Yttropyrochlore-(Y) (Y,Na,Ca,U)1-2(Nb,Ta,Ti)2(O,OH)7 F d3m 2/m 3
 
04.DH.15 Elsmoreite! WO3•0.5(H2O) F d3m 4/m 3 2/m
 

Other Uranpyrochlore Information

Help on References: References: NAME( AntBidBlaNic3) 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 Uranpyrochlore :
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

Search for Uranpyrochlore using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Uranpyrochlore :

A Bijoux Google Search for Uranpyrochlore
Adam's Minerals Google Search for Uranpyrochlore
Cape Minerals Google Search for Uranpyrochlore
Dakota Matrix Minerals Google Search for Uranpyrochlore
Excalibur Mineral Corp. Google Search for Uranpyrochlore
Exceptional Minerals Google Search for Uranpyrochlore
John Betts Fine Minerals Search for Uranpyrochlore
McDougall Minerals Google Search for Uranpyrochlore
Mineral News Website Link
Rock and Mineral Shows Google Search for Uranpyrochlore
Weinrich Minerals, Inc. Google Search for Uranpyrochlore

Ask about Uranpyrochlore here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Uranpyrochlore

(U,Ca,Ce)2(Nb,Ta)2O6(OH,F)
Dana No: 08.02.01.07 Strunz No: 04.DH.15
Locality:

 

Notes: