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Hydroxylbastnasite-(La) Mineral Data

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General Hydroxylbastnasite-(La) Information

Help on Chemical  Formula: Chemical Formula: La(CO3)(OH)
Help on Composition: Composition: Molecular Weight = 215.92 gm
   Lanthanum  64.33 %  La   75.45 % La2O3
   Hydrogen    0.47 %  H     4.17 % H2O
   Carbon      5.56 %  C    20.38 % CO2
   Oxygen     29.64 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: La(CO3)(OH)
Help on Environment: Environment: Lower portions of karstic bauxites.
Help on IMA Status: IMA Status: Approved IMA 1983
Help on Locality: Locality: Hungary and Yugoslavia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named to conform to the bastnasite goup designations.
Help on Name Pronunciation: Name Pronunciation: Hydroxylbastnasite-(La) + Pronunciation Say HYDROXYLBASTNASITE-(LA)
Help on Synonym: Synonym: Hydroxyl-bastnasite-(La) - Renamed Hydroxylbastnasite-(La) by Mineralogical Record, v39 (2008), p131
  Hydroxylcarbonate-(La)
 

Hydroxylbastnasite-(La) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.732:1:0.7949
Help on Cell Dimensions: Cell Dimensions: a = 21.891, b = 12.639, c = 10.047, Z = 36; V = 2,779.81 Den(Calc)= 4.64
Help on Crystal System: Crystal System: Orthorhombic - Disphenoidal H-M Symbol (2 2 2) Space Group: C 2221
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.95(1), 1.943(0.8), 2.07(0.8),3.65(0.8), 5.02(0.8), 1.824(0.6), 2.11(0.6), 2.51(0.6),
 

Physical Properties of Hydroxylbastnasite-(La)

Help on Color: Color: Yellow.
Help on Density: Density: 4.7 - 4.8, Average = 4.75
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Vitreous - Greasy
 

Optical Properties of Hydroxylbastnasite-(La)

Help on Optical Data: Optical Data: NCalc= 1.78 - from Gladstone-Dale relationship (KC = 0.1689) where Ncalc=Dcalc*KC+1
NCalc= 1.8 - from Gladstone-Dale relationship (KC = 0.1689) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Hydroxylbastnasite-(La)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.13 gm/cc
note: Specific Gravity of Hydroxylbastnasite-(La) =4.64 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0013338425
Boson Index = 0.9986661575
Help on Photoelectric: Photoelectric: PEHydroxylbastnasite-(La) = 311.11 barns/electron
U=PEHydroxylbastnasite-(La) x relectron=1,283.62 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 61,017.66 (Gamma Ray American Petroleum Institute Units)
Concentration of Hydroxylbastnasite-(La) per GRapi unit = 16.39 (PPM)

Hydroxylbastnasite-(La) 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) 498.49 ±124.62 grams of pure Hydroxylbastnasite-(La) .

Estimated Radioactivity from Hydroxylbastnasite-(La) - 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 / 7.44 cm 1,441,022 3.89E-05 61,017.66 20.06
100 gm / 3.45 cm 144,102 3.89E-06 6,101.77 2.01
10 gm / 1.60 cm 14,410 3.89E-07 610.18 0.20
1 gm / 7.44 mm 1,441 3.89E-08 61.02 0.02
0.1 gm / 3.45 mm 144 3.89E-09 6.10 0.00
0.01 gm / 1.60 mm 14 3.89E-10 0.61 0.00
0.001 gm / 0.74 mm 1 3.89E-11 0.06 0.00

Weight of pure Hydroxylbastnasite-(La) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.64 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 ( 3.22 % Th) From Sum REE Elements (64.33 % REE)
 

Hydroxylbastnasite-(La) Classification

Help on  Dana Class: Dana Class: 16a.01.02.02 (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-(La) Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.71,p1277,1986)
Help on See Also: See Also: Links to other databases for Hydroxylbastnasite-(La) :
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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Print or Cut-and-Paste your Hydroxylbastnasite-(La) Specimen Label here :

Hydroxylbastnasite-(La)

La(CO3)(OH)
Dana No: 16a.01.02.02 Strunz No: 05.BD.20a
Locality:

 

Notes:

 

 
   
 


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