Tanteuxenite-(Y) Mineral Data + Say TANTEUXENITE-(Y)


General Tanteuxenite-(Y) Information
Help on Chemical Formula: Chemical Formula: (Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6
Help on Composition: Composition: Molecular Weight = 480.83 gm
   Calcium    1.67 %  Ca    2.33 % CaO
   Cerium     2.91 %  Ce    3.41 % Ce2O3
   Yttrium   12.94 %  Y    16.44 % Y2O3
   Tantalum  52.69 %  Ta   64.33 % Ta2O5
   Titanium   1.99 %  Ti    3.32 % TiO2
   Niobium    7.73 %  Nb   11.06 % Nb2O5
   Hydrogen   0.10 %  H     0.94 % H2O
   Oxygen    19.96 %  O
            ______        ______ 
            100.00 %      101.83 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Y0.7Ca0.2Ce0.12(Ta0.7)2(Nb0.2)2(Ti0.1)O5.5(OH)0.5
Help on Environment: Environment: Tin placers.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1928
Help on Locality: Locality: Cooglegong, Pilbara, WA, Australia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition (Tantalum) and the Greek for "friendly to strangers, hospitable," in allusion to the rare elements that it contains.
Help on Synonym: Synonym: Delorenzite
 

Search for Tanteuxenite-(Y) Images

Click Here To Search 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.
  

Tanteuxenite-(Y) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.3555:1:0.3788
Help on Cell Dimensions: Cell Dimensions: a = 5.18, b = 14.57, c = 5.52, Z = 3; V = 416.61 Den(Calc)= 5.75
Help on Crystal System: Crystal System: Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pcan
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.12(1), 2.87(0.7), 2.52(0.3),2.67(0.3), 2.15(0.1), 2.28(0.1),
Help on Forms: Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: [ 2 0 1] [ 0 1 0] [ 1 0 0] [ 1 1 0]

Warning: this large pop-up is very compute intensive and may not work well with some computers.
 

Physical Properties of Tanteuxenite-(Y)

Help on Cleavage: Cleavage: [???] Indistinct
Help on Color: Color: Brownish black.
Help on Density: Density: 5.4 - 5.9, Average = 5.65
Help on Diaphaniety: Diaphaniety: Subtranslucent to Opaque
Help on Fracture: Fracture: Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces.
Help on Habit: Habit: Indistinct - Crystals or grains are unremarkable or poorly formed. Anhedral to subhedral crystals.
Help on Habit: Habit: Metamict - Mineral originally crystalline, now amorphous due to radiation damage.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luster: Luster: Resinous
Help on Streak: Streak: brownish gray
 

Optical Properties of Tanteuxenite-(Y)

Help on Optical Data: Optical Data: NCalc= 2.04 - from Gladstone-Dale relationship (KC = 0.1808) where Ncalc=Dcalc*KC+1
NCalc= 2.02 - from Gladstone-Dale relationship (KC = 0.1808) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Tanteuxenite-(Y)

Help on Electron Density: Electron Density:

relectron=4.99 gm/cc
note: rTanteuxenite-(Y) =5.75 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00275
Boson Index = 0.99725
Help on Photoelectric: Photoelectric:

PETanteuxenite-(Y) = 671.48 barns/electron
U=PETanteuxenite-(Y) x relectron=3,350.09 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 2,696.97 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Tanteuxenite-(Y) - mild
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 / 6.93 cm 65,274 1.76E-06 2,696.97 0.89
100 gm / 3.21 cm 6,527 1.76E-07 269.70 0.09
10 gm / 1.49 cm 653 1.76E-08 26.97 0.01
1 gm / 6.93 mm 65 1.76E-09 2.70 0.00
0.1 gm / 3.21 mm 7 1.76E-10 0.27 0.00
0.01 gm / 1.49 mm 1 1.76E-11 0.03 0.00
0.001 gm / 0.69 mm 0 1.76E-12 0.00 0.00

Weight of pure Tanteuxenite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.75 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 ( 0.15 % Th) From Sum REE Elements ( 2.91 % REE)
 

Tanteuxenite-(Y) Classification
Help on Dana Class: Dana Class: 8.3.8.3 (8)Multiple Oxides with Nb, Ta, and Ti
  (8.3)where A (B2O6)
  (8.3.8)Dana Group
 
8.3.8.1 Polycrase-(Y) (Y,Ca,Ce,U,Th)(Ti,Nb,Ta)2O6 Pcan 2/m 2/m 2/m
 
8.3.8.2 Euxenite-(Y) (Y,Ca,Ce)(Nb,Ta,Ti)2O6 Pcan 2/m 2/m 2/m
 
8.3.8.3 Tanteuxenite-(Y) (Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6 Pcan 2/m 2/m 2/m
 
8.3.8.4 Yttrocrasite-(Y) (Y,Th,Ca,U)(Ti,Fe)2(O,OH)6 Unk Ortho
 
8.3.8.5 Uranopolycrase (U,Y)(Ti,Nb,Ta)2O6 P bcn 2/m 2/m 2/m
Help on Strunz Class: Strunz Class: VI/D.19-50 VI - Sulfates,Chromates,Molybdates and Tungstates
  VI/D - Water-bearing sulfates with unfamiliar anions. Cations of medium and very big size
  VI/D.19 - Devilline - Serperite - Rapidcreekite series
 
VI/D.19-05 Niedermayrite! Cu4Cd(SO4)2(OH)6·4(H2O) P 21/m 2/m
 
VI/D.19-10 Devilline CaCu4(SO4)2(OH)6·3(H2O) P 21/c 2/m
 
VI/D.19-20 Serpierite Ca(Cu,Zn)4(SO4)2(OH)6·3(H2O) C 2/c 2/m
 
VI/D.19-30 Orthoserpierite Ca(Cu,Zn)4(SO4)2(OH)6·3(H2O) P ca21 mm2
 
VI/D.19-32 Lautenthalite PbCu4(OH)6(SO4)2·3(H2O) P 21/c 2/m
 
VI/D.19-35 Arzrunite Cu4Pb2SO4(OH)4Cl6·2(H2O) Unk Ortho
 
VI/D.19-40 Tatarskite Ca6Mg2(SO4)2(CO3)2Cl4(OH)4·7(H2O) Unk Ortho
 
VI/D.19-50 Tanteuxenite-(Y) (Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6 Pcan 2/m 2/m 2/m
 

Other Tanteuxenite-(Y) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Tanteuxenite-(Y) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas

Search for Tanteuxenite-(Y) using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Tanteuxenite-(Y) :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Tanteuxenite-(Y) Mineral Data :

Ask about Tanteuxenite-(Y) 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 Espaņol

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

Tanteuxenite-(Y)

(Y,Ce,Ca)(Ta,Nb,Ti)2(O,OH)6
Dana No: 8.3.8.3 Strunz No: VI/D.19-50
Locality:

 

Notes:

 
 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links