Mineralogy Database

Calciobetafite Mineral Data

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General Calciobetafite Information

Help on Chemical  Formula: Chemical Formula: Ca2(Ti,Nb)2(O,OH)7
Help on Composition: Composition: Molecular Weight = 394.30 gm
   Calcium          15.25 %  Ca   21.33 % CaO
   La,Ce,Pr,Nd,Sm,   7.30 %  RE    8.52 % REE2O3
   Thorium           5.88 %  Th    6.70 % ThO2
   Uranium           6.04 %  U     6.85 % UO2
   Titanium          9.71 %  Ti   16.21 % TiO2
   Niobium          28.27 %  Nb   40.45 % Nb2O5
   Iron              1.42 %  Fe    1.82 % FeO
   Hydrogen          0.08 %  H     0.69 % H2O
   Oxygen           25.56 %  O
   Fluorine          0.48 %  F     0.48 % F
                      -   %   F    -0.20 % -O=F2    
                   ______        ______ 
                   100.00 %      102.84 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.5REE0.2Th0.1U0.1Nb1.2Ti0.8Fe2+0.1O6(OH)0.3F0.1
Help on Environment: Environment: In a subvolcanic rock, locally termed "sanidinite", present in a phreatomagmatic explosion breccia.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: From Monte di Procida, Campi Flegrei, near Naples, Campania, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the mineral with the betafite structure and the CALCIum content.
Help on Name Pronunciation: Name Pronunciation: Calciobetafite + Pronunciation Say CALCIOBETAFITE
Help on Synonym: Synonym: ICSD 31196
  PDF 42-2
 

Calciobetafite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 10.2978, Z = 8; V = 1,092.03 Den(Calc)= 4.80
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): 2.973(1), 1.82(0.53), 1.552(0.45),
 

Physical Properties of Calciobetafite

Help on Color: Color: Reddish brown.
Help on Density: Density: 4.2 - 4.5, Average = 4.34
Help on Diaphaneity: Diaphaneity: Subtranslucent to Opaque
Help on Fracture: Fracture: Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
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 Luster: Luster: Resinous
 

Optical Properties of Calciobetafite

Help on Optical Data: Optical Data: Isotropic.
  NCalc= 2.21 - from Gladstone-Dale relationship (KC = 0.252) where Ncalc=Dcalc*KC+1
NCalc= 2.1 - from Gladstone-Dale relationship (KC = 0.252) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Calciobetafite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.42 gm/cc
note: Specific Gravity of Calciobetafite =4.80 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PECalciobetafite = 375.93 barns/electron
U=PECalciobetafite x relectron=1,660.33 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 588,996.74 (Gamma Ray American Petroleum Institute Units)
Concentration of Calciobetafite per GRapi unit =1,697.80 (PPB)

Calciobetafite 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) 51.64 ± 12.91 grams of pure Calciobetafite .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 5164.1 ±1291.0 grams of pure Calciobetafite .

Estimated Radioactivity from Calciobetafite - 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 / 7.36 cm 13,442,809 3.63E-04 588,996.74 193.64
100 gm / 3.41 cm 1,344,281 3.63E-05 58,899.67 19.36
10 gm / 1.58 cm 134,428 3.63E-06 5,889.97 1.94
1 gm / 7.36 mm 13,443 3.63E-07 589.00 0.19
0.1 gm / 3.41 mm 1,344 3.63E-08 58.90 0.02
0.01 gm / 1.58 mm 134 3.63E-09 5.89 0.00
0.001 gm / 0.74 mm 13 3.63E-10 0.59 0.00

Weight of pure Calciobetafite in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.80 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
 

Calciobetafite Classification

Help on  Dana Class: Dana Class: 08.02.03.05 (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 Calciobetafite Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Calciobetafite :
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 Calciobetafite Specimen Label here :

Calciobetafite

Ca2(Ti,Nb)2(O,OH)7
Dana No: 08.02.03.05 Strunz No: 04.DH.15
Locality:

 

Notes:

 

 
   
 


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