Mineralogy Database

Synchysite-(Nd) Mineral Data

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General Synchysite-(Nd) Information

Help on Chemical Formula: Chemical Formula: CaNd(CO3)2F
Help on Composition: Composition: Molecular Weight = 323.33 gm
   Calcium    12.40 %  Ca   17.34 % CaO
   Carbon      7.43 %  C    27.22 % CO2
   Neodymium  44.61 %  Nd   52.03 % Nd2O3
   Oxygen     29.69 %  O
   Fluorine    5.88 %  F     5.88 % F
                -   %   F    -2.47 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaNd(CO3)2F
Help on IMA Status: IMA Status: Approved IMA 1978
Help on Locality: Locality: Straz block, Holicky deposit, Ceska Lepa, Bohimia, Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the Nd end-member of the Synchysite-(Ce) series.
Help on Name Pronunciation: Name Pronunciation: Synchysite-(Nd) + Pronunciation Say SYNCHYSITE-(ND)
 

Synchysite-(Nd) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.5783:1:1.2951
Help on Cell Dimensions: Cell Dimensions: a = 4.039, b = 6.984, c = 9.045, Z = 2; V = 255.14 Den(Calc)= 4.21
Help on Crystal System: Crystal System: Orthorhombic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.52(1), 9.04(0.6), 2.77(0.35),
 

Physical Properties of Synchysite-(Nd)

Help on Cleavage: Cleavage: None
Help on Color: Color: Light violet, Light gray blue.
Help on Density: Density: 4.21
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: white
 

Optical Properties of Synchysite-(Nd)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.052 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.052 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1591,KPDmeas= 0.1591,KC= 0.1679
Ncalc = 1.71
Help on Optical Data: Optical Data: Biaxial (+), a=1.61, b=1.66, g=1.74, bire=0.1300
Help on Pleochroism (x): Pleochroism (x): light violet.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Synchysite-(Nd)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.88 gm/cc
note: Specific Gravity of Synchysite-(Nd) =4.21 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PESynchysite-(Nd) = 255.48 barns/electron
U=PESynchysite-(Nd) x relectron= 991.28 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 43,855.66 (Gamma Ray American Petroleum Institute Units)
Concentration of Synchysite-(Nd) per GRapi unit = 22.80 (PPM)

Synchysite-(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) 693.56 ±173.39 grams of pure Synchysite-(Nd) .

Estimated Radioactivity from Synchysite-(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 / 7.68 cm 999,266 2.70E-05 43,855.66 14.42
100 gm / 3.57 cm 99,927 2.70E-06 4,385.57 1.44
10 gm / 1.66 cm 9,993 2.70E-07 438.56 0.14
1 gm / 7.68 mm 999 2.70E-08 43.86 0.01
0.1 gm / 3.57 mm 100 2.70E-09 4.39 0.00
0.01 gm / 1.66 mm 10 2.70E-10 0.44 0.00
0.001 gm / 0.77 mm 1 2.70E-11 0.04 0.00

Weight of pure Synchysite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.21 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 ( 2.23 % Th) From Sum REE Elements (44.61 % REE)
 

Synchysite-(Nd) Classification
Help on Dana Class: Dana Class: 16a.01.03.03 (16a)Carbonates - Hydroxyl or Halogen
  (16a.01)in the Bastnasite/Shynchysite/Parasite Groups
  (16a.01.03)Synchysite Subgroup
 
16a.01.03.01 Synchysite-(Ce) CaCe(CO3)2F C 2/c 2/m
 
16a.01.03.02 Synchysite-(Y) CaY(CO3)2F C 2/c 2/m
 
16a.01.03.03 Synchysite-(Nd) CaNd(CO3)2F Unk Ortho
Help on Strunz Class: Strunz Class: 05.BD.20c 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BD -With rare-earth elements (REE)
 
05.BD.20c Synchysite-(Ce) CaCe(CO3)2F C 2/c 2/m
 
05.BD.20c Synchysite-(Nd) CaNd(CO3)2F Unk Ortho
 
05.BD.20c Synchysite-(Y) CaY(CO3)2F C 2/c 2/m
 

Other Synchysite-(Nd) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Synchysite-(Nd) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (UofA)
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

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Synchysite-(Nd)

CaNd(CO3)2F
Dana No: 16a.01.03.03 Strunz No: 05.BD.20c
Locality:

 

Notes:

 
 
   
 

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