Mineralogy Database

Cebaite-(Nd) Mineral Data

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General Cebaite-(Nd) Information

Help on Chemical  Formula: Chemical Formula: Ba3(Nd,Ce)2(CO3)5F2
Help on Composition: Composition: Molecular Weight = 1,036.44 gm
   Barium     39.75 %  Ba   44.38 % BaO
   Cerium      6.76 %  Ce    7.92 % Ce2O3
   Carbon      5.79 %  C    21.23 % CO2
   Neodymium  20.88 %  Nd   24.35 % Nd2O3
   Oxygen     23.16 %  O
   Fluorine    3.67 %  F     3.67 % F
                -   %   F    -1.54 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ba3Nd1.5Ce0.5(CO3)5F2
Help on IMA Status: IMA Status: Not Approved IMA 1988 (Dana # Added)
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the composition.
 

Cebaite-(Nd) Crystallography

Help on Crystal System: Crystal System: Monoclinic Space Group: Unk
 

Physical Properties of Cebaite-(Nd)

Help on Color: Color: Yellow, Dark yellow.
Help on Density: Density: 4.8
Help on Hardness: Hardness: 4.5-5 - Near Apatite
Help on Luster: Luster: Vitreous - Waxy
 

Optical Properties of Cebaite-(Nd)

Help on Optical Data: Optical Data: NCalc= 1.71 - from Gladstone-Dale relationship (KC = 0.1481) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Cebaite-(Nd)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.21 gm/cc
note: Specific Gravity of Cebaite-(Nd) =4.80 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.11
Boson Index = 0.89
Help on Photoelectric: Photoelectric: PECebaite-(Nd) = 341.72 barns/electron
U=PECebaite-(Nd) x relectron=1,440.16 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 25,880.94 (Gamma Ray American Petroleum Institute Units)
Concentration of Cebaite-(Nd) per GRapi unit = 38.64 (PPM)

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

Estimated Radioactivity from Cebaite-(Nd) - 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 / 7.36 cm 619,017 1.67E-05 25,880.94 8.51
100 gm / 3.41 cm 61,902 1.67E-06 2,588.09 0.85
10 gm / 1.58 cm 6,190 1.67E-07 258.81 0.09
1 gm / 7.36 mm 619 1.67E-08 25.88 0.01
0.1 gm / 3.41 mm 62 1.67E-09 2.59 0.00
0.01 gm / 1.58 mm 6 1.67E-10 0.26 0.00
0.001 gm / 0.74 mm 1 1.67E-11 0.03 0.00

Weight of pure Cebaite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.80 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 ( 1.38 % Th) From Sum REE Elements (27.63 % REE)
 

Cebaite-(Nd) Classification

Help on  Dana Class: Dana Class: 16a.01.09.02 (16a)Carbonates - Hydroxyl or Halogen
  (16a.01)in the Bastnasite/Shynchysite/Parasite Groups
  (16a.01.09)Dana Group
 
16a.01.09.01 Cebaite-(Ce) Ba3Ce2(CO3)5F2 C 2/m or C 2 Mono
 
16a.01.09.02 Cebaite-(Nd)! Ba3(Nd,Ce)2(CO3)5F2 Unk Mono
Help on  Strunz Class: Strunz Class: 05.BD.15 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BD -With rare-earth elements (REE)
 
05.BD.15 Cebaite-(Nd)! Ba3(Nd,Ce)2(CO3)5F2 Unk Mono
 
05.BD.15 Cebaite-(Ce) Ba3Ce2(CO3)5F2 C 2/m or C 2 Mono
 

Other Cebaite-(Nd) Information

Help on References: References: PHYS. PROP.(Am.Min.,Vol.73,p1493,1988)
Help on See Also: See Also: Links to other databases for Cebaite-(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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Cebaite-(Nd)

Ba3(Nd,Ce)2(CO3)5F2
Dana No: 16a.01.09.02 Strunz No: 05.BD.15
Locality:

 

Notes: