Wakefieldite-(Ce) Mineral Data + Say WAKEFIELDITE-(CE)


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General Wakefieldite-(Ce) Information
Help on Chemical Formula: Chemical Formula: (Ce+++,Pb++,Pb++++)VO4
Help on Composition: Composition: Molecular Weight = 281.89 gm
   Cerium    29.82 %  Ce   34.93 % Ce2O3
   Vanadium  18.07 %  V    32.26 % V2O5
   Lead      29.40 %  Pb   23.75 % PbO /  8.49 % PbO2
   Oxygen    22.70 %  O
            ______        ______ 
            100.00 %       99.43 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ce0.6Pb0.3Pb0.1(VO4)
Help on Environment: Environment: Found in the oxidation zone.
Help on IMA Status: IMA Status: Approved IMA 1977
Help on Locality: Locality: Kusu deposit, 85 km SW of Kinshasa, Zaire. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Renamed from kusuite in 1977 for the locality, changed to wakefieldite-Ce as the Ce analog of wakefieldite-Y.
Help on Synonym: Synonym: ICSD 202425
  Kusuite
  PDF 29-398
 

Wakefieldite-(Ce) Image

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Wakefieldite-(Ce)

Comments: Bluish black crystal of wakefieldite-(Ce) on matrix.
Location: Yellow Lake, Olala, British Columbia, Canada. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Wakefieldite-(Ce) Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:0.88224
Help on Cell Dimensions: Cell Dimensions: a = 7.354, c = 6.488, Z = 4; V = 350.88 Den(Calc)= 5.34
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 41/amd
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.678(1), 2.766(0.9), 1.891(0.7),
Click Here for Large Wakefieldite-(Ce) Structure Window Crystal Structure:

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Baudracco-Gritti C , Quartieri S , Vezzalini G , Permingeat F , Pillard F , Rinaldi R , Bulletin de Mineralogie , 110 (1987) p.657-663, Une wakefieldite-(Ce) non plombifere: nouvelles donnees sur, l espece minerale correspondant a l orthovanadate de cerium

View Additional jPOWD Structure files for Wakefieldite-(Ce)
[1]
 

Physical Properties of Wakefieldite-(Ce)

Help on Cleavage: Cleavage: None
Help on Color: Color: Dark red, Black.
Help on Density: Density: 4.76
Help on Diaphaniety: Diaphaniety: Translucent
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Square - Occurs as square crystals in shape or outline.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: rusty brown
 

Optical Properties of Wakefieldite-(Ce)

Help on Dichroism (w): Dichroism (w): yellow.
Help on Optical Data: Optical Data: Uniaxial (?), b=2.
 

Calculated Properties of Wakefieldite-(Ce)

Help on Electron Density: Electron Density:

relectron=4.64 gm/cc
note: rWakefieldite-(Ce) =5.34 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.06553
Boson Index = 0.93447
Help on Photoelectric: Photoelectric:

PEWakefieldite-(Ce) = 680.98 barns/electron
U=PEWakefieldite-(Ce) x relectron=3,163.16 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 27,671.41 (Gamma Ray American Petroleum Institute Units)

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

Estimated Radioactivity from Wakefieldite-(Ce) - weak
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 / 7.10 cm 668,047 1.81E-05 27,671.41 9.10
100 gm / 3.29 cm 66,805 1.81E-06 2,767.14 0.91
10 gm / 1.53 cm 6,680 1.81E-07 276.71 0.09
1 gm / 7.10 mm 668 1.81E-08 27.67 0.01
0.1 gm / 3.29 mm 67 1.81E-09 2.77 0.00
0.01 gm / 1.53 mm 7 1.81E-10 0.28 0.00
0.001 gm / 0.71 mm 1 1.81E-11 0.03 0.00

Weight of pure Wakefieldite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 5.34 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 ( 1.49 % Th) From Sum REE Elements (29.82 % REE)
 

Wakefieldite-(Ce) Classification
Help on Dana Class: Dana Class: 38.4.11.4 (38)Anhydrous Phosphates, etc
  (38.4)A+ XO4
  (38.4.11)Zenotime Group (Tetragonal: I41/amd)
 
38.4.11.1 Xenotime-(Y) YPO4 I 41/amd 4/m 2/m 2/m
 
38.4.11.2 Chernovite-(Y) YAsO4 I 41/amd 4/m 2/m 2/m
 
38.4.11.3 Wakefieldite-(Y) YVO4 I 41/amd 4/m 2/m 2/m
 
38.4.11.4 Wakefieldite-(Ce) (Ce,Pb,Pb)VO4 I 41/amd 4/m 2/m 2/m
 
38.4.11.5 Pretulite! ScPO4 I 41/amd 4/m 2/m 2/m
 
38.4.11.6 Xenotime-(Yb)! YbPO4 I 41/amd 4/m 2/m 2/m
Help on Strunz Class: Strunz Class: VII/A.14-40 VII - Phosphates, Arsenates and Vanadates
  VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions, cations of very big size: Ca, Na and andre
  VII/A.14 - Xenotime-(Y) - Wakefieldite-(Ce) series
 
VII/A.14-05 Pretulite! ScPO4 I 41/amd 4/m 2/m 2/m
 
VII/A.14-08 Xenotime-(Yb)! YbPO4 I 41/amd 4/m 2/m 2/m
 
VII/A.14-10 Xenotime-(Y) YPO4 I 41/amd 4/m 2/m 2/m
 
VII/A.14-20 Chernovite-(Y) YAsO4 I 41/amd 4/m 2/m 2/m
 
VII/A.14-25 Chernovite-(Ce)* (Ce,Y)(AsO4) I 41/amd 4/m 2/m 2/m
 
VII/A.14-30 Wakefieldite-(Y) YVO4 I 41/amd 4/m 2/m 2/m
 
VII/A.14-40 Wakefieldite-(Ce) (Ce,Pb,Pb)VO4 I 41/amd 4/m 2/m 2/m
 

Other Wakefieldite-(Ce) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Wakefieldite-(Ce) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST

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Print or Cut-and-Paste your Wakefieldite-(Ce) Specimen Label here :

Wakefieldite-(Ce)

(Ce+++,Pb++,Pb++++)VO4
Dana No: 38.4.11.4 Strunz No: VII/A.14-40
Locality:

 

Notes:

 
 
   
 
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