Mineralogy Database

Parisite-(Nd) Mineral Data

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General Parisite-(Nd) Information

Help on Chemical  Formula: Chemical Formula: Ca(Nd,Ce,La)2(CO3)3F2
Help on Composition: Composition: Molecular Weight = 555.09 gm
   Calcium     7.22 %  Ca   10.10 % CaO
   Lanthanum  20.02 %  La   23.48 % La2O3
   Cerium     10.10 %  Ce   11.83 % Ce2O3
   Carbon      6.49 %  C    23.79 % CO2
   Neodymium  23.39 %  Nd   27.28 % Nd2O3
   Oxygen     25.94 %  O
   Fluorine    6.85 %  F     6.85 % F
                -   %   F    -2.88 % -O=F2    
             ______        ______ 
             100.00 %      100.43 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaNd0.9Ce0.4La0.8(CO3)3F2
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Bayan Obo iron-rare earth deposit, Inner Mongolia, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Nd-rich end member of the parisite series, named for J. J. Paris, mine proprietor at Muzon, north of Bogota, Columbia.
Help on Name Pronunciation: Name Pronunciation: Parisite-(Nd) Say PARISITE-(ND)
 

Parisite-(Nd) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.96743
Help on Cell Dimensions: Cell Dimensions: a = 7.125, c = 14.018, Z = 3; V = 616.29 Den(Calc)= 4.49
Help on Crystal System: Crystal System: Trigonal - Pyramidal H-M Symbol (3) Space Group: R 3
 

Physical Properties of Parisite-(Nd)

Help on Cleavage: Cleavage: {???} Good
Help on Color: Color: Brownish yellow.
Help on Density: Density: 4.2 - 4.5, Average = 4.34
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 4-5 - Fluorite-Apatite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Parisite-(Nd)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.026 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1596,KPDmeas= 0.1647,KC= 0.1638
Ncalc = 1.69 - 1.74
Help on Optical Data: Optical Data: Uniaxial (+), w=1.679, e=1.754, bire=0.0750.
 

Calculated Properties of Parisite-(Nd)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.93 gm/cc
note: Specific Gravity of Parisite-(Nd) =4.35 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEParisite-(Nd) = 283.57 barns/electron
U=PEParisite-(Nd) x relectron=1,114.68 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 51,570.09 (Gamma Ray American Petroleum Institute Units)
Concentration of Parisite-(Nd) per GRapi unit = 19.39 (PPM)

Parisite-(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) 589.81 ±147.45 grams of pure Parisite-(Nd) .

Estimated Radioactivity from Parisite-(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 / 7.60 cm 1,198,456 3.24E-05 51,570.09 16.95
100 gm / 3.53 cm 119,846 3.24E-06 5,157.01 1.70
10 gm / 1.64 cm 11,985 3.24E-07 515.70 0.17
1 gm / 7.60 mm 1,198 3.24E-08 51.57 0.02
0.1 gm / 3.53 mm 120 3.24E-09 5.16 0.00
0.01 gm / 1.64 mm 12 3.24E-10 0.52 0.00
0.001 gm / 0.76 mm 1 3.24E-11 0.05 0.00

Weight of pure Parisite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.35 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 ( 2.68 % Th) From Sum REE Elements (53.50 % REE)
 

Parisite-(Nd) Classification

Help on  Dana Class: Dana Class: 16a.01.05.02 (16a)Carbonates - Hydroxyl or Halogen
  (16a.01)in the Bastnasite/Shynchysite/Parasite Groups
  (16a.01.05)Parisite Subgroup
 
16a.01.05.01 Parisite-(Ce) Ca(Ce,La)2(CO3)3F2 R 3 3
 
16a.01.05.02 Parisite-(Nd) Ca(Nd,Ce,La)2(CO3)3F2 R 3 3
Help on  Strunz Class: Strunz Class: 05.BD.20b 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BD -With rare-earth elements (REE)
 
05.BD.20b Parisite-(Nd) Ca(Nd,Ce,La)2(CO3)3F2 R 3 3
 
05.BD.20b Parisite-(Ce) Ca(Ce,La)2(CO3)3F2 R 3 3
 

Other Parisite-(Nd) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.73,p1496,1988) OPTIC PROP.(Am.Min.,Vol.73,p1496,1988)
Help on See Also: See Also: Links to other databases for Parisite-(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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Print or Cut-and-Paste your Parisite-(Nd) Specimen Label here :

Parisite-(Nd)

Ca(Nd,Ce,La)2(CO3)3F2
Dana No: 16a.01.05.02 Strunz No: 05.BD.20b
Locality:

 

Notes:

 

 
   
 


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