Mineralogy Database

Plumbobetafite Mineral Data

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General Plumbobetafite Information

Help on Chemical  Formula: Chemical Formula: (Pb,U,Ca)(Ti,Nb)2O6(OH,F)
Help on Composition: Composition: Molecular Weight = 425.90 gm
   Sodium            0.54 %  Na    0.73 % Na2O
   Calcium           1.88 %  Ca    2.63 % CaO
   La,Ce,Pr,Nd,Sm,   3.38 %  RE    3.94 % REE2O3
   Uranium          11.18 %  U    13.43 % UO3
   Titanium         14.61 %  Ti   24.38 % TiO2
   Niobium           8.73 %  Nb   12.48 % Nb2O5
   Hydrogen          0.14 %  H     1.27 % H2O
   Lead             24.33 %  Pb   26.20 % PbO
   Tungsten          8.63 %  W    10.89 % WO3
   Oxygen           24.79 %  O
   Fluorine          1.78 %  F     1.78 % F
                      -   %   F    -0.75 % -O=F2    
                   ______        ______ 
                   100.00 %       96.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb0.5U0.2Ca0.2Na0.1REE0.1Ti1.3Nb0.4W0.2O6(OH)0.6F0.4
Help on Environment: Environment: Accessory mineral in a pegmatitic dike in nepheline syenite.
Help on IMA Status: IMA Status: Approved IMA 1969
Help on Locality: Locality: Burpala massif, 120 km north of Lake Baikal, eastern Siberia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the lead (PLUMBium), and other betafite minerals.
Help on Name Pronunciation: Name Pronunciation: Plumbobetafite + Pronunciation Say PLUMBOBETAFITE
 

Plumbobetafite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 10.33, Z = 8; V = 1,102.30 Den(Calc)= 5.13
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
 

Physical Properties of Plumbobetafite

Help on Cleavage: Cleavage: None
Help on Color: Color: Brown, Yellow.
Help on Density: Density: 4.64
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Cubic Crystals - Occurs as cubic shaped crystals.
Help on Habit: Habit: Metamict - Mineral originally crystalline, now amorphous due to radiation damage.
Help on Hardness: Hardness: 4.5-5.5 - Near Apatite
Help on Luminescence: Luminescence: Radioactive.
Help on Luster: Luster: Adamantine
 

Optical Properties of Plumbobetafite

Help on Optical Data: Optical Data: NCalc= 2.11 - from Gladstone-Dale relationship (KC = 0.2158) where Ncalc=Dcalc*KC+1
NCalc= 2 - from Gladstone-Dale relationship (KC = 0.2158) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Plumbobetafite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.51 gm/cc
note: Specific Gravity of Plumbobetafite =5.13 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEPlumbobetafite = 857.07 barns/electron
U=PEPlumbobetafite x relectron=3,869.25 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 841,647.79 (Gamma Ray American Petroleum Institute Units)
Concentration of Plumbobetafite per GRapi unit =1,188.15 (PPB)

Plumbobetafite 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) 36.14 ± 9.03 grams of pure Plumbobetafite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 3613.9 ±903.49 grams of pure Plumbobetafite .

Estimated Radioactivity from Plumbobetafite - 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 / 7.19 cm 20,084,210 5.43E-04 841,647.79 276.71
100 gm / 3.34 cm 2,008,421 5.43E-05 84,164.78 27.67
10 gm / 1.55 cm 200,842 5.43E-06 8,416.48 2.77
1 gm / 7.19 mm 20,084 5.43E-07 841.65 0.28
0.1 gm / 3.34 mm 2,008 5.43E-08 84.16 0.03
0.01 gm / 1.55 mm 201 5.43E-09 8.42 0.00
0.001 gm / 0.72 mm 20 5.43E-10 0.84 0.00

Weight of pure Plumbobetafite in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.13 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 ( 0.17 % Th) From Sum REE Elements ( 3.38 % REE)
 

Plumbobetafite Classification

Help on  Dana Class: Dana Class: 08.02.03.03 (08)Multiple Oxides with Nb, Ta, and Ti
  (08.02)where (A)2 (B2O6) (O,OH,F)
  (08.02.03)Pyrochlore Group (Betafite Subgroup; 2(Ti)>(Ta+Nb)
 
08.02.03.01 Betafite (Ca,U)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m
 
08.02.03.02 Yttrobetafite-(Y) (Y,U,Ce)2(Ti,Nb,Ta)2O6(OH) F d3m 4/m 3 2/m
 
08.02.03.03 Plumbobetafite (Pb,U,Ca)(Ti,Nb)2O6(OH,F) F d3m 4/m 3 2/m
 
08.02.03.04 Stibiobetafite (Sb,Ca)2(Ti,Nb,Ta)2(O,OH)7 F d3m 4/m 3 2/m
 
08.02.03.05 Calciobetafite Ca2(Ti,Nb)2(O,OH)7 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 Plumbobetafite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Plumbobetafite :
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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Print or Cut-and-Paste your Plumbobetafite Specimen Label here :

Plumbobetafite

(Pb,U,Ca)(Ti,Nb)2O6(OH,F)
Dana No: 08.02.03.03 Strunz No: 04.DH.15
Locality:

 

Notes:

 

 
   
 


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