Yttrotungstite-(Y) Mineral Data

Yttrotungstite-(Y) Mineral Data
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General Yttrotungstite-(Y) Information

Help on Chemical Formula: Chemical Formula: YW2O6(OH)3
Help on Composition: Composition: Molecular Weight = 598.35 gm
   Calcium           0.27 %  Ca    0.37 % CaO
   La,Ce,Pr,Nd,Sm,   9.15 %  RE   10.67 % REE2O3
   Yttrium           8.17 %  Y    10.38 % Y2O3
   Magnesium         0.08 %  Mg    0.13 % MgO
   Aluminum          0.45 %  Al    0.85 % Al2O3
   Iron              0.28 %  Fe    0.40 % Fe2O3
   Silicon           0.19 %  Si    0.40 % SiO2
   Hydrogen          0.51 %  H     4.52 % H2O
   Tungsten         56.84 %  W    71.68 % WO3
   Oxygen           24.07 %  O
                   ______        ______ 
                   100.00 %       99.41 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Y0.55REE0.38Ca0.04Mg0.02W1.85Al0.1Si0.04Fe3+0.03O6(OH)3
Help on Environment: Environment: In eluvial cassiterite mines, probably altered from wolframite or scheelite
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1950
Help on Locality: Locality: Kramat Pulai mine, Kinta District, Perak, Malaysia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the composition (Yttrium, Tungsten).
Help on Name Pronunciation: Name Pronunciation: Yttrotungstite-(Y) + Pronunciation Say YTTROTUNGSTITE-(Y)
 

Yttrotungstite-(Y) Image

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Yttrotungstite-(Y)

Comments: Orange crystals of Yttrotungstite-(Y).
Location: Kramat Pulai mine, Kinta, Perak, Malaysia. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Yttrotungstite-(Y) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.8051:1:0.6681
Help on Cell Dimensions: Cell Dimensions: a = 6.954, b = 8.637, c = 5.771, Z = 2; beta = 104.56° V = 335.48 Den(Calc)= 5.92
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.26(1), 4.69(1), 2.028(0.9),
Click Here for Large Yttrotungstite-(Y) Structure Window Crystal Structure:

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Davis R J , Smith G W , Mineralogical Magazine , 38 (1971) p.261-285, Yttrotungstite, Locality: Kinta district, Perak, Malaysia

 

Physical Properties of Yttrotungstite-(Y)

Help on Cleavage: Cleavage: {010} Good, {101} Poor
Help on Color: Color: Canary yellow, Light yellow.
Help on Density: Density: 5.96
Help on Diaphaneity: Diaphaneity: Semitransparent
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.
Help on Hardness: Hardness: 1 - Talc
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: yellow white
 

Optical Properties of Yttrotungstite-(Y)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.073 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.067 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1627,KPDmeas= 0.1616,KC= 0.1744
Ncalc = 2.03 - 2.04
Help on Optical Data: Optical Data: Biaxial (-), a=1.89, b=1.98, g=2.02, bire=0.1300, 2V(Calc)=64, 2V(Meas)=68.
Help on Pleochroism (x): Pleochroism (x): colorless, colorless, or pale yellow.
Help on Pleochroism (y): Pleochroism (y): colorless, colorless, or dark yellow.
Help on Pleochroism (z): Pleochroism (z): gray, canary yellow, or dark yellow.
 

Calculated Properties of Yttrotungstite-(Y)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.15 gm/cc
note: Specific Gravity of Yttrotungstite-(Y) =5.92 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PEYttrotungstite-(Y) = 775.95 barns/electron
U=PEYttrotungstite-(Y) x relectron=3,995.36 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 8,514.92 (Gamma Ray American Petroleum Institute Units)
Concentration of Yttrotungstite-(Y) per GRapi unit = 117.44 (PPM)

Yttrotungstite-(Y) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from Yttrotungstite-(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 / 6.86 cm 205,588 5.56E-06 8,514.92 2.80
100 gm / 3.18 cm 20,559 5.56E-07 851.49 0.28
10 gm / 1.48 cm 2,056 5.56E-08 85.15 0.03
1 gm / 6.86 mm 206 5.56E-09 8.51 0.00
0.1 gm / 3.18 mm 21 5.56E-10 0.85 0.00
0.01 gm / 1.48 mm 2 5.56E-11 0.09 0.00
0.001 gm / 0.69 mm 0 5.56E-12 0.01 0.00

Weight of pure Yttrotungstite-(Y) in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.92 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 ( 0.46 % Th) From Sum REE Elements ( 9.15 % REE)
 

Yttrotungstite-(Y) Classification
Help on Dana Class: Dana Class: 49.03.03.02 (49)Basic and Hydrated Molybdates and Tungstates
  (49.03)(Hydrated, containing Hydroxyl or Halogen)
  (49.03.03)Yttrotungstite Group
 
49.03.03.01 Cerotungstite-(Ce) (Ce,REE)W2O6(OH)3 P 21/m 2/m
 
49.03.03.02 Yttrotungstite-(Y) YW2O6(OH)3 P 21/m 2/m
 
49.03.03.03 Yttrotungstite-(Ce)! (Ce,Nd,Y)W2O6(OH)3 P 21/m 2/m
Help on Strunz Class: Strunz Class: 04.FD.20 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FD -Hydroxides with OH, without H2O; chains of edge-sharing octahedra
 
04.FD.20 Cerotungstite-(Ce) (Ce,REE)W2O6(OH)3 P 21/m 2/m
 
04.FD.20 Yttrotungstite-(Ce)! (Ce,Nd,Y)W2O6(OH)3 P 21/m 2/m
 
04.FD.20 Yttrotungstite-(Y) YW2O6(OH)3 P 21/m 2/m
 

Other Yttrotungstite-(Y) Information
Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(AntBidBlaNic5) OPTIC PROP.(AntBidBlaNic5)
Help on See Also: See Also: Links to other databases for Yttrotungstite-(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 Yttrotungstite-(Y) Specimen Label here :

Yttrotungstite-(Y)

YW2O6(OH)3
Dana No: 49.03.03.02 Strunz No: 04.FD.20
Locality:

 

Notes: