Fluocerite-(Ce) Mineral Data + Say FLUOCERITE-(CE)


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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 Synonym: Synonym: ICSD 4
  PDF 38-4524
  Tysonite
 

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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 DipyramidalH-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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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 Diaphaniety: Diaphaniety: 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 Gladstone-Dale: Gladstone-Dale: CI meas= 0.254 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.255 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.0997,KPDmeas= 0.0998,KC= 0.1338
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:

relectron=5.28 gm/cc
note: rFluocerite-(Ce) =6.13 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00006
Boson Index = 0.99994
Help on Photoelectric: Photoelectric:

PEFluocerite-(Ce) = 378.18 barns/electron
U=PEFluocerite-(Ce) x relectron=1,998.27 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 65,341.75 (Gamma Ray American Petroleum Institute Units)

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 65,341.75 21.48
100 gm / 3.15 cm 159,190 4.30E-06 6,534.17 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 / 3.15 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 6.13 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: 9.3.4.1 (9)Anhydrous and Hydrated Halides
  (9.3)Dana Type
  (9.3.4)Dana Group
 
9.3.4.1 Fluocerite-(Ce) (Ce,La)F3 P 63/mcm 6/m 2/m 2/m
 
9.3.4.2 Fluocerite-(La) (La,Ce)F3 Unk Hex
Help on Strunz Class: Strunz Class: III/A.10-20 III - Halogenides
  III/A - Simple Halogenides, without water Metal : Halogen = 1 : 2, 1 : 3
  III/A.10 - Fluorite series and related compounds
 
III/A.10-10 Fluocerite-(La) (La,Ce)F3 Unk Hex
 
III/A.10-20 Fluocerite-(Ce) (Ce,La)F3 P 63/mcm 6/m 2/m 2/m
 

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 -Google Images 5 -Google Scholar 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas 11 - WWW-MINCRYST 12 -École des Mines de Paris

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

Fluocerite-(Ce)

(Ce,La)F3
Dana No: 9.3.4.1 Strunz No: III/A.10-20
Locality:

 

Notes:

 
 
   
 
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