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Yttrobetafite-(Y) Mineral Data

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General Yttrobetafite-(Y) Information

Help on Chemical  Formula: Chemical Formula: (Y,U,Ce)2(Ti,Nb,Ta)2O6(OH)
Help on Composition: Composition: Molecular Weight = 437.15 gm
   Calcium    5.50 %  Ca    7.70 % CaO
   Cerium     9.62 %  Ce   11.26 % Ce2O3
   Yttrium    8.14 %  Y    10.33 % Y2O3
   Thorium    5.31 %  Th    6.04 % ThO2
   Uranium    5.45 %  U     6.18 % UO2
   Tantalum   0.83 %  Ta    1.01 % Ta2O5
   Titanium  13.14 %  Ti   21.93 % TiO2
   Niobium   12.75 %  Nb   18.24 % Nb2O5
   Iron       5.11 %  Fe    4.93 % FeO /  1.83 % Fe2O3
   Hydrogen   0.16 %  H     1.44 % H2O
   Lead       9.48 %  Pb   10.21 % PbO
   Oxygen    24.52 %  O
            ______        ______ 
            100.00 %      101.10 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.6Y0.4Ce0.3Fe2+0.3Pb0.2Th0.1U0.1Ti1.2Nb0.6Ta0.02Fe3+0.1O6(OH)0.7
Help on Environment: Environment: Replacement bodies in a quartz-plagioclase-microcline pegmatite and a constituent of lunar soils and breccias.
Help on IMA Status: IMA Status: Approved IMA 1962
Help on Locality: Locality: Alakurtti, northwestern Karelia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the YTTRium-dominent betafite member of the pyrochlore group.
Help on Name Pronunciation: Name Pronunciation: Yttrobetafite-(Y) + Pronunciation Say YTTROBETAFITE-(Y)
Help on Synonym: Synonym: ICSD 24206
  PDF 42-413
 

Yttrobetafite-(Y) Image

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  Yttrobetafite-(Y)

Comments: Fragment of the large grain of compact mustard-yellow yttrobetafite-(Y) from the type locality. Associated minerals are black biotite and redish-brown veinlets of gummite.
Location: Alakurtti pegmatite, Northern Karelia, Murmanskaja Oblast', Northern Region, Russia. Scale: Specimen size is 4.5x2.8x1.4 cm.
© Pavel M. Kartashov

Yttrobetafite-(Y) Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 10.35, Z = 8; V = 1,108.72 Den(Calc)= 5.24
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): 1.694(1), 3.258(0.8), 2.985(0.7),1.18(0.6), 2.501(0.6), 1.104(0.3), 1.631(0.3),
 

Physical Properties of Yttrobetafite-(Y)

Help on Color: Color: Greenish, Gray green, Reddish.
Help on Density: Density: 3.65 - 4.9, Average = 4.27
Help on Diaphaneity: Diaphaneity: Translucent to Opaque
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 4.5-5.5 - Near Apatite
Help on Luminescence: Luminescence: Radioactive.
Help on Luster: Luster: Greasy (Oily)
 

Optical Properties of Yttrobetafite-(Y)

Help on Optical Data: Optical Data: NCalc= 2.24 - from Gladstone-Dale relationship (KC = 0.2363) where Ncalc=Dcalc*KC+1
NCalc= 2.01 - from Gladstone-Dale relationship (KC = 0.2363) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Yttrobetafite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.72 gm/cc
note: Specific Gravity of Yttrobetafite-(Y) =5.24 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEYttrobetafite-(Y) = 517.04 barns/electron
U=PEYttrobetafite-(Y) x relectron=2,438.91 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 519,737.20 (Gamma Ray American Petroleum Institute Units)
Concentration of Yttrobetafite-(Y) per GRapi unit =1,924.05 (PPB)

Yttrobetafite-(Y) 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) 58.52 ± 14.63 grams of pure Yttrobetafite-(Y) .
Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 100 cm box) 5852.3 ±1463.1 grams of pure Yttrobetafite-(Y) .

Estimated Radioactivity from Yttrobetafite-(Y) - 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 / 7.14 cm 12,124,567 3.28E-04 519,737.20 170.87
100 gm / 3.32 cm 1,212,457 3.28E-05 51,973.72 17.09
10 gm / 1.54 cm 121,246 3.28E-06 5,197.37 1.71
1 gm / 7.14 mm 12,125 3.28E-07 519.74 0.17
0.1 gm / 3.32 mm 1,212 3.28E-08 51.97 0.02
0.01 gm / 1.54 mm 121 3.28E-09 5.20 0.00
0.001 gm / 0.71 mm 12 3.28E-10 0.52 0.00

Weight of pure Yttrobetafite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.24 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
 

Yttrobetafite-(Y) Classification

Help on  Dana Class: Dana Class: 08.02.03.02 (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 Yttrobetafite-(Y) Information

Help on References: References: NAME( AntBidBlaNic3) PHYS. PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Yttrobetafite-(Y) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Print or Cut-and-Paste your Yttrobetafite-(Y) Specimen Label here :

Yttrobetafite-(Y)

(Y,U,Ce)2(Ti,Nb,Ta)2O6(OH)
Dana No: 08.02.03.02 Strunz No: 04.DH.15
Locality:

 

Notes:

 

 
   
 


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