Mineralogy Database

Fluocerite-(Ce) Mineral Data

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General Fluocerite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: (Ce,La)F3
Help on Composition: Composition: Molecular Weight = 196.99 gm
   Lanthanum   7.05 %  La    8.27 % La2O3
   Cerium     64.02 %  Ce   74.98 % Ce2O3
   Fluorine   28.93 %  F    28.93 % F
                -   %   F   -12.18 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ce0.9La0.1F3
Help on Environment: Environment: Granitic rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1845
Help on Locality: Locality: Falun and Osterby, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its chemical composition containing fluorine (Latin, fluere = "to flow") and cerium (Named after the asteroid Ceres).
Help on Name Pronunciation: Name Pronunciation: Fluocerite-(Ce) + Pronunciation Say FLUOCERITE-(CE)
Help on Synonym: Synonym: ICSD 4
  PDF 38-4524
  Tysonite
 

Fluocerite-(Ce) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:1.02247
Help on Cell Dimensions: Cell Dimensions: a = 7.12, c = 7.28, Z = 6; V = 319.61 Den(Calc)= 6.14
Help on Crystal System: Crystal System: Hexagonal - Dihexagonal Dipyramidal H-M Symbol (6/m 2/m 2/m) Space Group: P 63/mcm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.19(1), 2(0.8), 2.05(0.8),
Help on Forms: Forms:

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Help on Above

Forms: ( 0 3 2) ( 3 3 2) ( 1 1 0) ( 0 1 0) ( 0 0 1)

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Physical Properties of Fluocerite-(Ce)

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Pale wax yellow, Yellowish brown, Reddish brown.
Help on Density: Density: 6.13
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 4.5-5 - Near Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Waxy
Help on Streak: Streak: yellow white
 

Optical Properties of Fluocerite-(Ce)

Help on Optical Data: Optical Data: Uniaxial (-), e=1.607-1.611, w=1.612-1.618, bire=0.0050-0.0070.
 

Calculated Properties of Fluocerite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.29 gm/cc
note: Specific Gravity of Fluocerite-(Ce) =6.14 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0000634628
Boson Index = 0.9999365372
Help on Photoelectric: Photoelectric: PEFluocerite-(Ce) = 378.18 barns/electron
U=PEFluocerite-(Ce) x relectron=2,001.53 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 65,341.76 (Gamma Ray American Petroleum Institute Units)
Concentration of Fluocerite-(Ce) per GRapi unit = 15.30 (PPM)

Fluocerite-(Ce) 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) 465.50 ±116.38 grams of pure Fluocerite-(Ce) .

Estimated Radioactivity from Fluocerite-(Ce) - 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 / 6.78 cm 1,591,897 4.30E-05 65,341.76 21.48
100 gm / 3.14 cm 159,190 4.30E-06 6,534.18 2.15
10 gm / 1.46 cm 15,919 4.30E-07 653.42 0.21
1 gm / 6.78 mm 1,592 4.30E-08 65.34 0.02
0.1 gm / 3.14 mm 159 4.30E-09 6.53 0.00
0.01 gm / 1.46 mm 16 4.30E-10 0.65 0.00
0.001 gm / 0.68 mm 2 4.30E-11 0.07 0.00

Weight of pure Fluocerite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 6.14 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 ( 3.55 % Th) From Sum REE Elements (71.07 % REE)
 

Fluocerite-(Ce) Classification

Help on  Dana Class: Dana Class: 09.03.04.01 (09)Anhydrous and Hydrated Halides
  (09.03)Dana Type
  (09.03.04)Fluocerite Group
 
09.03.04.01 Fluocerite-(Ce) (Ce,La)F3 P 63/mcm 6/m 2/m 2/m
 
09.03.04.02 Fluocerite-(La) (La,Ce)F3 Unk Hex
Help on  Strunz Class: Strunz Class: 03.AC.15 03 - HALIDES
  03.A - Simple Halides, Without H2O
  03.AC -M:X = 1:3
 
03.AC.15 Fluocerite-(Ce) (Ce,La)F3 P 63/mcm 6/m 2/m 2/m
 
03.AC.15 Fluocerite-(La) (La,Ce)F3 Unk Hex
 

Other Fluocerite-(Ce) Information

Help on References: References: NAME( Emsley91) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Fluocerite-(Ce) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
13 - WWW-MINCRYST

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Print or Cut-and-Paste your Fluocerite-(Ce) Specimen Label here :

Fluocerite-(Ce)

(Ce,La)F3
Dana No: 09.03.04.01 Strunz No: 03.AC.15
Locality:

 

Notes:

 

 
   
 


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