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Bismutopyrochlore Mineral Data

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General Bismutopyrochlore Information

Help on Chemical  Formula: Chemical Formula: (Bi,U,Ca,Pb)1+x(Nb,Ta)2O6(OH)•n(H2O)
Help on Composition: Composition: Molecular Weight = 562.81 gm
   Calcium    2.14 %  Ca    2.99 % CaO
   Uranium   12.69 %  U    15.25 % UO3
   Tantalum   8.04 %  Ta    9.81 % Ta2O5
   Niobium   24.76 %  Nb   35.42 % Nb2O5
   Bismuth   14.85 %  Bi   16.56 % Bi2O3
   Hydrogen   1.72 %  H    15.36 % H2O
   Lead       3.68 %  Pb    3.97 % PbO
   Oxygen    32.12 %  O
            ______        ______ 
            100.00 %       99.36 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Bi0.4U0.3Ca0.3Pb0.1Nb1.5Ta0.25O6(OH)•4.3(H2O)
Help on Environment: Environment: Formed on lepidolite in miarolitic cavities in a pegmatite vein. A member of the pyrochlore group
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Mika pegmatite vein, central Rangkul' Highlands, Eastern Pamirs, Tajikistan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its composition and relationship to pyrochlore.
Help on Synonym: Synonym: IMA1998-059
 

Bismutopyrochlore Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 10.41, Z = 6; V = 1,128.11 Den(Calc)= 4.97
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.967(1)(111), 1.569(0.9)(262), 1.848(0.9)(044),1.195(0.8)(662), 2.614(0.7)(224), 1.145(0.5)(735), 1.5(0.4)(444), 5.98(0.4)(111),
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Physical Properties of Bismutopyrochlore

Help on Cleavage: Cleavage: None
Help on Color: Color: Black, Dark greenish brown.
Help on Density: Density: 4.97
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Amorphous - No crystalline form or imitative shape.
Help on Habit: Habit: Metamict - Mineral originally crystalline, now amorphous due to radiation damage.
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: yellow
 

Optical Properties of Bismutopyrochlore

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2213,KPDmeas= 0.2213,KC= 0.2169
Ncalc = 2.08
Help on Optical Data: Optical Data: Isotropic, n=2.1.
 

Calculated Properties of Bismutopyrochlore

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.50 gm/cc
note: Specific Gravity of Bismutopyrochlore =4.97 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0092451026
Boson Index = 0.9907548974
Help on Photoelectric: Photoelectric: PEBismutopyrochlore = 774.89 barns/electron
U=PEBismutopyrochlore x relectron=3,486.40 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 979,050.09 (Gamma Ray American Petroleum Institute Units)
Concentration of Bismutopyrochlore per GRapi unit =1,021.40 (PPB)

Bismutopyrochlore 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) 31.07 ± 7.77 grams of pure Bismutopyrochlore .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 3106.8 ±776.69 grams of pure Bismutopyrochlore .

Estimated Radioactivity from Bismutopyrochlore - 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 / 7.27 cm 22,711,300 6.14E-04 979,050.09 321.88
100 gm / 3.37 cm 2,271,130 6.14E-05 97,905.01 32.19
10 gm / 1.57 cm 227,113 6.14E-06 9,790.50 3.22
1 gm / 7.27 mm 22,711 6.14E-07 979.05 0.32
0.1 gm / 3.37 mm 2,271 6.14E-08 97.91 0.03
0.01 gm / 1.57 mm 227 6.14E-09 9.79 0.00
0.001 gm / 0.73 mm 23 6.14E-10 0.98 0.00

Weight of pure Bismutopyrochlore in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.97 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
 

Bismutopyrochlore Classification

Help on  Dana Class: Dana Class: 08.02.01.09 (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 Bismutopyrochlore Information

Help on References: References: NAME( AmMin, vol 85, p 1561) PHYS. PROP.(AmMin, vol 85, p 1561) OPTIC PROP.(AmMin, vol 85, p 1561)
Help on See Also: See Also: Links to other databases for Bismutopyrochlore :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info
12 - Uranium Minerals

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

Bismutopyrochlore

(Bi,U,Ca,Pb)1+x(Nb,Ta)2O6(OH)•n(H2O)
Dana No: 08.02.01.09 Strunz No: 04.DH.15
Locality:

 

Notes:

 

 
   
 


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