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Rhabdophane-(Nd) Mineral Data

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General Rhabdophane-(Nd) Information

Help on Chemical  Formula: Chemical Formula: (Nd,Ce,La)PO4•(H2O)
Help on Composition: Composition: Molecular Weight = 255.21 gm
   Lanthanum   16.33 %  La   19.15 % La2O3
   Cerium       5.49 %  Ce    6.43 % Ce2O3
   Phosphorus  12.14 %  P    27.81 % P2O5
   Hydrogen     0.79 %  H     7.06 % H2O
   Neodymium   33.91 %  Nd   39.55 % Nd2O3
   Oxygen      31.35 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Nd0.6La0.3Ce0.1(PO4)•(H2O)
Help on IMA Status: IMA Status: Approved IMA 1959
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named to distinguish the Nd rich form of rhabdophane-Ce.
Help on Name Pronunciation: Name Pronunciation: Rhabdophane-(Nd) + Pronunciation Say RHABDOPHANE-(ND)
 

Rhabdophane-(Nd) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.91347
Help on Cell Dimensions: Cell Dimensions: a = 7.05, c = 6.44, Z = 3; V = 277.20 Den(Calc)= 4.59
Help on Crystal System: Crystal System: Hexagonal - Trapezohedral H-M Symbol (6 2 2) Space Group: P 6222
 

Physical Properties of Rhabdophane-(Nd)

Help on Cleavage: Cleavage: None
Help on Color: Color: Yellowish white, Pink, Reddish brown.
Help on Density: Density: 4
Help on Diaphaneity: Diaphaneity: Translucent
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Greasy (Oily)
Help on Streak: Streak: white
 

Optical Properties of Rhabdophane-(Nd)

Help on Optical Data: Optical Data: NCalc= 1.77 - from Gladstone-Dale relationship (KC = 0.1667) where Ncalc=Dcalc*KC+1
NCalc= 1.67 - from Gladstone-Dale relationship (KC = 0.1667) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Rhabdophane-(Nd)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.17 gm/cc
note: Specific Gravity of Rhabdophane-(Nd) =4.59 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PERhabdophane-(Nd) = 301.54 barns/electron
U=PERhabdophane-(Nd) x relectron=1,257.09 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 53,990.37 (Gamma Ray American Petroleum Institute Units)
Concentration of Rhabdophane-(Nd) per GRapi unit = 18.52 (PPM)

Rhabdophane-(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) 563.37 ±140.84 grams of pure Rhabdophane-(Nd) .

Estimated Radioactivity from Rhabdophane-(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 / 7.47 cm 1,248,321 3.37E-05 53,990.37 17.75
100 gm / 3.47 cm 124,832 3.37E-06 5,399.04 1.78
10 gm / 1.61 cm 12,483 3.37E-07 539.90 0.18
1 gm / 7.47 mm 1,248 3.37E-08 53.99 0.02
0.1 gm / 3.47 mm 125 3.37E-09 5.40 0.00
0.01 gm / 1.61 mm 12 3.37E-10 0.54 0.00
0.001 gm / 0.75 mm 1 3.37E-11 0.05 0.00

Weight of pure Rhabdophane-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.59 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 ( 2.79 % Th) From Sum REE Elements (55.73 % REE)
 

Rhabdophane-(Nd) Classification

Help on  Dana Class: Dana Class: 40.04.07.03 (40)Hydrated Phosphates, etc
  (40.04)where A+++ XO4 � x(H2O)
  (40.04.07)Rhabdophane Group
 
40.04.07.01 Rhabdophane-(Ce) (Ce,La)PO4•(H2O) P 6222 6 2 2
 
40.04.07.02 Rhabdophane-(La) (La,Ce)PO4•(H2O) P 6222 6 2 2
 
40.04.07.03 Rhabdophane-(Nd) (Nd,Ce,La)PO4•(H2O) P 6222 6 2 2
 
40.04.07.04 Grayite (Th,Pb,Ca)PO4•(H2O) P 6222 6 2 2
 
40.04.07.05 Brockite (Ca,Th,Ce)(PO4)•(H2O) P 6222 6 2 2
 
40.04.07.06 Tristramite (Ca,U,Fe)(PO4,SO4)•2(H2O) P 6222 6 2 2
Help on  Strunz Class: Strunz Class: 08.CJ.45 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CJ -With only large cations
 
08.CJ.45 Brockite (Ca,Th,Ce)(PO4)•(H2O) P 6222 6 2 2
 
08.CJ.45 Grayite (Th,Pb,Ca)PO4•(H2O) P 6222 6 2 2
 
08.CJ.45 Rhabdophane-(Ce) (Ce,La)PO4•(H2O) P 6222 6 2 2
 
08.CJ.45 Rhabdophane-(La) (La,Ce)PO4•(H2O) P 6222 6 2 2
 
08.CJ.45 Rhabdophane-(Nd) (Nd,Ce,La)PO4•(H2O) P 6222 6 2 2
 
08.CJ.45 Tristramite (Ca,U,Fe)(PO4,SO4)•2(H2O) P 6222 6 2 2
 

Other Rhabdophane-(Nd) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Rhabdophane-(Nd) :
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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Rhabdophane-(Nd)

(Nd,Ce,La)PO4•(H2O)
Dana No: 40.04.07.03 Strunz No: 08.CJ.45
Locality:

 

Notes:

 

 
   
 


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