Vitusite-(Ce) Mineral Data

Vitusite-(Ce) Mineral Data
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General Vitusite-(Ce) Information

Help on Chemical Formula: Chemical Formula: Na3(Ce,La,Nd)(PO4)2
Help on Composition: Composition: Molecular Weight = 399.08 gm
   Sodium      17.28 %  Na   23.30 % Na2O
   Lanthanum   10.44 %  La   12.25 % La2O3
   Cerium      21.07 %  Ce   24.67 % Ce2O3
   Phosphorus  15.52 %  P    35.57 % P2O5
   Neodymium    3.61 %  Nd    4.22 % Nd2O3
   Oxygen      32.07 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na3Ce0.6La0.3Nd0.1(PO4)2
Help on Environment: Environment: Melanocratic nepheline syenite.
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: Ilimaussaq intrusion, southern Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Vitus Bering (1681-1741), explorer of norhtern seas (Bering Sea).
Help on Name Pronunciation: Name Pronunciation: Vitusite-(Ce) Say VITUSITE-(CE)
 

Vitusite-(Ce) Image

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Vitusite-(Ce)   Magnesio-arfvedsonite

Comments: Translucent beige-colored vitusite-(Ce) in a rim around a black magnesio-arfvedsonite crystal.
Location: Yubileinaya Vein, Karnasurt Mountain, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Russia. Scale: Specimen Size 4x3x3 cm.
© John Betts - Fine Minerals

Vitusite-(Ce) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.2859:1:0.7527
Help on Cell Dimensions: Cell Dimensions: a = 5.342, b = 18.68, c = 14.062, Z = 8; V = 1,403.23 Den(Calc)= 3.78
Help on Crystal System: Crystal System: OrthorhombicSpace Group: Pcmb,Pc21b
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.801(1), 2.811(1), 6.58(0.9),
Click Here for Large Vitusite-(Ce) Structure Window Crystal Structure:

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Mazzi F , Ungaretti L , Neues Jahrbuch fur Mineralogie, Monatshefte , 1994 (1994) p.49-66, The crystal structure of vitusite from Ilimaussaq (South Greenland):, Na3REE(PO4)2, Locality: Ilimaussaq, South Greenland

 

Physical Properties of Vitusite-(Ce)

Help on Cleavage: Cleavage: {100} Good, {010} Good, {001} Good
Help on Color: Color: White, Light green, Light pink.
Help on Density: Density: 3.6 - 3.7, Average = 3.65
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Vitusite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.03 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.006 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1678,KPDmeas= 0.1738,KC= 0.1688
Ncalc = 1.61 - 1.64
Help on Optical Data: Optical Data: Biaxial (-), a=1.602-1.604, b=1.647-1.65, g=1.649-1.654, bire=0.0470-0.0500, 2V(Calc)=22-32, 2V(Meas)=30.
 

Calculated Properties of Vitusite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.50 gm/cc
note: Specific Gravity of Vitusite-(Ce) =3.78 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0076501022
Boson Index = 0.9923498978
Help on Photoelectric: Photoelectric: PEVitusite-(Ce) = 174.91 barns/electron
U=PEVitusite-(Ce) x relectron= 612.66 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 34,715.34 (Gamma Ray American Petroleum Institute Units)
Concentration of Vitusite-(Ce) per GRapi unit = 28.81 (PPM)

Vitusite-(Ce) 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) 876.17 ±219.04 grams of pure Vitusite-(Ce) .

Estimated Radioactivity from Vitusite-(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 / 7.96 cm 786,738 2.13E-05 34,715.34 11.41
100 gm / 3.70 cm 78,674 2.13E-06 3,471.53 1.14
10 gm / 1.72 cm 7,867 2.13E-07 347.15 0.11
1 gm / 7.96 mm 787 2.13E-08 34.72 0.01
0.1 gm / 3.70 mm 79 2.13E-09 3.47 0.00
0.01 gm / 1.72 mm 8 2.13E-10 0.35 0.00
0.001 gm / 0.80 mm 1 2.13E-11 0.03 0.00

Weight of pure Vitusite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.78 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 ( 1.76 % Th) From Sum REE Elements (35.12 % REE)
 

Vitusite-(Ce) Classification
Help on Dana Class: Dana Class: 38.01.08.01 (38)Anhydrous Phosphates, etc
  (38.01)A+ B++ XO4
  (38.01.08)Dana Group
 
38.01.08.01 Vitusite-(Ce) Na3(Ce,La,Nd)(PO4)2 Pcmb,Pc21b Ortho
Help on Strunz Class: Strunz Class: 08.AC.35 08 - PHOSPHATES, ARSENATES, VANADATES
  08.A - Phosphates, etc. without additional anions, without H2O
  08.AC -With medium-sized and large cations
 
08.AC.35 Vitusite-(Ce) Na3(Ce,La,Nd)(PO4)2 Pcmb,Pc21b Ortho
 

Other Vitusite-(Ce) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Vitusite-(Ce) :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Vitusite-(Ce)

Na3(Ce,La,Nd)(PO4)2
Dana No: 38.01.08.01 Strunz No: 08.AC.35
Locality:

 

Notes: