Hydroxylbastnasite-(Nd) Mineral Data

Hydroxylbastnasite-(Nd) Mineral Data
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General Hydroxylbastnasite-(Nd) Information

Help on Chemical Formula: Chemical Formula: Nd(CO3)(OH)
Help on Composition: Composition: Molecular Weight = 221.26 gm
   Hydrogen    0.46 %  H     4.07 % H2O
   Carbon      5.43 %  C    19.89 % CO2
   Neodymium  65.19 %  Nd   76.04 % Nd2O3
   Oxygen     28.92 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Nd(CO3)(OH)
Help on Environment: Environment: Red karstic bauxites.
Help on IMA Status: IMA Status: Approved IMA 1985
Help on Locality: Locality: Niksic, Montenegro, Yugoslavia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as Nd end member in the hydroxylbastnasite series.
Help on Name Pronunciation: Name Pronunciation: Hydroxylbastnasite-(Nd) + Pronunciation Say HYDROXYLBASTNASITE-(ND)
Help on Synonym: Synonym: Hydroxyl-bastnasite-(Nd) - Renamed Hydroxylbastnasite-(Nd) by Mineralogical Record, v39 (2008), p131
  Hydroxylcarbonate-(Nd)
 

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Hydroxylbastnasite-(Nd) Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:1.37964
Help on Cell Dimensions: Cell Dimensions: a = 7.191, c = 9.921, Z = 6; V = 444.29 Den(Calc)= 4.96
Help on Crystal System: Crystal System: Hexagonal - Ditrigonal DipyramidalH-M Symbol (6 m2) Space Group: P 62c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.911(1), 4.95(0.88), 3.596(0.79),
Click Here for Large Hydroxylbastnasite-(Nd) Structure Window Crystal Structure:

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Christensen N , Acta Chemica Scandinavica , 27 (1973) p.2973-2982, Hydrothermal preparation of rare earth hydroxycarbonates. The crystal structure, of NdOHCO3

 

Physical Properties of Hydroxylbastnasite-(Nd)

Help on Cleavage: Cleavage: {0001} Parting
Help on Color: Color: White.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 1-2 - Between Talc and Gypsum
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: white
 

Optical Properties of Hydroxylbastnasite-(Nd)

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.039 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1537,KC= 0.16
Ncalc = 1.79
Help on Optical Data: Optical Data: Uniaxial (+), w=1.715, e=1.81, bire=0.0950.
 

Calculated Properties of Hydroxylbastnasite-(Nd)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.44 gm/cc
note: Specific Gravity of Hydroxylbastnasite-(Nd) =4.96 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.13
Boson Index = 0.87
Help on Photoelectric: Photoelectric: PEHydroxylbastnasite-(Nd) = 381.92 barns/electron
U=PEHydroxylbastnasite-(Nd) x relectron=1,695.22 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 62,228.22 (Gamma Ray American Petroleum Institute Units)
Concentration of Hydroxylbastnasite-(Nd) per GRapi unit = 16.07 (PPM)

Hydroxylbastnasite-(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) 488.79 ±122.20 grams of pure Hydroxylbastnasite-(Nd) .

Estimated Radioactivity from Hydroxylbastnasite-(Nd) - weak
Specimen
Size
Weight/Volume
(Sphere) *		 Calculated
Activity
Becquerels
(Bq)		 Calculated
Activity
Curies (Ci)		 Estimated
Activity
GR(api)		 Estimated
Exposure
(mRem**)/hr
If Held in Hand
For One Hour
1000 gm / 7.28 cm 1,460,285 3.95E-05 62,228.22 20.46
100 gm / 3.38 cm 146,029 3.95E-06 6,222.82 2.05
10 gm / 1.57 cm 14,603 3.95E-07 622.28 0.20
1 gm / 7.28 mm 1,460 3.95E-08 62.23 0.02
0.1 gm / 3.38 mm 146 3.95E-09 6.22 0.00
0.01 gm / 1.57 mm 15 3.95E-10 0.62 0.00
0.001 gm / 0.73 mm 1 3.95E-11 0.06 0.00

Weight of pure Hydroxylbastnasite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.96 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 ( 3.26 % Th) From Sum REE Elements (65.19 % REE)
 

Hydroxylbastnasite-(Nd) Classification
Help on Dana Class: Dana Class: 16a.01.02.03 (16a)Carbonates - Hydroxyl or Halogen
  (16a.01)in the Bastnasite/Shynchysite/Parasite Groups
  (16a.01.02)Bastnasite Subgroup(Hydroxylbastnasite Series)
 
16a.01.02.01 Hydroxylbastnasite-(Ce) Ce(CO3)(OH) P 62c 6 m2
 
16a.01.02.02 Hydroxylbastnasite-(La) La(CO3)(OH) C 2221 2 2 2
 
16a.01.02.03 Hydroxylbastnasite-(Nd) Nd(CO3)(OH) P 62c 6 m2
Help on Strunz Class: Strunz Class: 05.BD.20a 05 - CARBONATES (NITRATES)
  05.B - Carbonates with additional anions, without H2O
  05.BD -With rare-earth elements (REE)
 
05.BD.20a Bastnasite-(Ce) Ce(CO3)F P 62c 6 m2
 
05.BD.20a Bastnasite-(La) La(CO3)F P 62c 6 m2
 
05.BD.20a Bastnasite-(Y) Y(CO3)F P 62c 6 m2
 
05.BD.20a Hydroxylbastnasite-(Ce) Ce(CO3)(OH) P 62c 6 m2
 
05.BD.20a Hydroxylbastnasite-(La) La(CO3)(OH) C 2221 2 2 2
 
05.BD.20a Hydroxylbastnasite-(Nd) Nd(CO3)(OH) P 62c 6 m2
 
05.BD.20a Thorbastnasite Th(Ca,Ce)(CO3)2F2•3(H2O) P 62c 6 m2
 

Other Hydroxylbastnasite-(Nd) Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Hydroxylbastnasite-(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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Print or Cut-and-Paste your Hydroxylbastnasite-(Nd) Specimen Label here :

Hydroxylbastnasite-(Nd)

Nd(CO3)(OH)
Dana No: 16a.01.02.03 Strunz No: 05.BD.20a
Locality:

 

Notes: