Mineralogy Database

Wakefieldite-(Nd) Mineral Data

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General Wakefieldite-(Nd) Information

Help on Chemical  Formula: Chemical Formula: NdVO4
Help on Composition: Composition: Molecular Weight = 259.18 gm
   Vanadium   19.65 %  V    35.09 % V2O5
   Neodymium  55.65 %  Nd   64.91 % Nd2O3
   Oxygen     24.69 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Nd(VO4)
Help on Environment: Environment: Xenotime group
Help on IMA Status: IMA Status: Proposed IMA 2008 (Dana # Added)
Help on Locality: Locality: Arase mine, Kochi Prefecture, Shikoku, southwest Japan Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Commission on New Minerals, Nomenclature and Classification (CNMNC)
Help on Name Pronunciation: Name Pronunciation: Wakefieldite-(Nd) + Pronunciation Say WAKEFIELDITE-(ND)
Help on Synonym: Synonym: ICSD 16299
  PDF 15-769

Wakefieldite-(Nd) Image

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Comments: Thin section image of wakefieldite-(Nd) in orange caryopilite with hematite and rhodochrosite.
Location: Ferruginous manganese ore from the Arise deposit, Kochi Prefecture, Japan. Scale: See Image.
© Advanced Industrial Science and Technology

Wakefieldite-(Nd) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.88702
Help on Cell Dimensions: Cell Dimensions: a = 7.338, c = 6.509, Z = 4; V = 350.49 Den(Calc)= 4.91
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Pyramidal H-M Symbol (4mm) Space Group: I 41/amd
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.67(1), 2.74(0.51), 4.84(0.27),1.886(0.25), 2.09(0.14), 2.6(0.11), 2.29(0.09), 2.92(0.07),

Optical Properties of Wakefieldite-(Nd)

Help on Optical Data: Optical Data: NCalc= 2.02 - from Gladstone-Dale relationship (KC = 0.2082) where Ncalc=Dcalc*KC+1

Calculated Properties of Wakefieldite-(Nd)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.36 gm/cc
note: Specific Gravity of Wakefieldite-(Nd) =4.91 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.11
Boson Index = 0.89
Help on Photoelectric: Photoelectric: PEWakefieldite-(Nd) = 332.77 barns/electron
U=PEWakefieldite-(Nd) x relectron=1,449.95 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 52,679.58 (Gamma Ray American Petroleum Institute Units)
Concentration of Wakefieldite-(Nd) per GRapi unit = 18.98 (PPM)

Wakefieldite-(Nd) 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) 577.39 ±144.35 grams of pure Wakefieldite-(Nd) .

Estimated Radioactivity from Wakefieldite-(Nd) - weak
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 7.30 cm 1,246,619 3.37E-05 52,679.58 17.32
100 gm / 3.39 cm 124,662 3.37E-06 5,267.96 1.73
10 gm / 1.57 cm 12,466 3.37E-07 526.80 0.17
1 gm / 7.30 mm 1,247 3.37E-08 52.68 0.02
0.1 gm / 3.39 mm 125 3.37E-09 5.27 0.00
0.01 gm / 1.57 mm 12 3.37E-10 0.53 0.00
0.001 gm / 0.73 mm 1 3.37E-11 0.05 0.00

Weight of pure Wakefieldite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.91 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 ( 2.78 % Th) From Sum REE Elements (55.65 % REE)

Wakefieldite-(Nd) Classification

Help on  Dana Class: Dana Class: (38)Anhydrous Phosphates, etc
  (38.04)A+ XO4
  (38.04.11)Zenotime Group (Tetragonal: I41/amd) Xenotime-(Y) YPO4 I 41/amd 4/m 2/m 2/m Chernovite-(Y) YAsO4 I 41/amd 4/m 2/m 2/m Wakefieldite-(Y) YVO4 I 41/amd 4/m 2/m 2/m Wakefieldite-(Ce) (Ce,Pb,Pb)VO4 I 41/amd 4/m 2/m 2/m Pretulite! ScPO4 I 41/amd 4/m 2/m 2/m Xenotime-(Yb)! YbPO4 I 41/amd 4/m 2/m 2/m Wakefieldite-(La)! LaVO4 I 41/amd 4mm Wakefieldite-(Nd)! NdVO4 I 41/amd 4mm
Help on  Strunz Class: Strunz Class: 08.AD.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AD -With only large cations
08.AD.35 Dreyerite BiVO4 I 41/amd 4/m 2/m 2/m
08.AD.35 Chernovite-(Y) YAsO4 I 41/amd 4/m 2/m 2/m
08.AD.35 Pretulite! ScPO4 I 41/amd 4/m 2/m 2/m
08.AD.35 Xenotime-(Y) YPO4 I 41/amd 4/m 2/m 2/m
08.AD.35 Wakefieldite-(Ce) (Ce,Pb,Pb)VO4 I 41/amd 4/m 2/m 2/m
08.AD.35 Wakefieldite-(Y) YVO4 I 41/amd 4/m 2/m 2/m
08.AD.35 Xenotime-(Yb)! YbPO4 I 41/amd 4/m 2/m 2/m
08.AD.35 Wakefieldite-(La)! LaVO4 I 41/amd 4mm
08.AD.35 Wakefieldite-(Nd)! NdVO4 I 41/amd 4mm

Other Wakefieldite-(Nd) Information

Help on See Also: See Also: Links to other databases for Wakefieldite-(Nd) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 08.AD.35





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