Plumbobetafite Mineral Data

General Plumbobetafite Information

Chemical Formula:

(Pb,U,Ca)(Ti,Nb)2O6(OH,F)

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

Empirical Formula:

Pb_0.5U_0.2Ca_0.2Na_0.1REE_0.1Ti_1.3Nb_0.4W_0.2O₆(OH)_0.6F_0.4

Environment:

Accessory mineral in a pegmatitic dike in nepheline syenite.

IMA Status:

Approved IMA 1969

Locality:

Burpala massif, 120 km north of Lake Baikal, eastern Siberia. Link to MinDat.org Location Data.

Name Origin:

Named for the lead (PLUMBium), and other betafite minerals.

Name Pronunciation:

Plumbobetafite + Pronunciation

Search for Plumbobetafite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Plumbobetafite Crystallography

Cell Dimensions:

a = 10.33, Z = 8; V = 1,102.30 Den(Calc)= 5.13

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m

Physical Properties of Plumbobetafite

Cleavage:

None

Color:

Brown, Yellow.

Density:

4.64

Diaphaneity:

Translucent to Opaque

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Habit:

Cubic Crystals - Occurs as cubic shaped crystals.

Habit:

Metamict - Mineral originally crystalline, now amorphous due to radiation damage.

Hardness:

4.5-5.5 - Near Apatite

Luminescence:

Radioactive.

Luster:

Adamantine

Optical Properties of Plumbobetafite

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

Electron Density:

Bulk Density (Electron Density)=4.51 gm/cc
note: Specific Gravity of Plumbobetafite =5.13 gm/cc.

Fermion Index:

Fermion Index = 0.09
Boson Index = 0.91

Photoelectric:

PE_{Plumbobetafite}= 857.07 barns/electron
U=PE_{Plumbobetafite} x r_electron=3,869.25 barns/cc.

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 Becquerels (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

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

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

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

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

Search for Plumbobetafite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Plumbobetafite :

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

Ask about Plumbobetafite 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 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: