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Fluorbritholite-(Ce) Mineral Data

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General Fluorbritholite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: (Ca,Ce,La,Na)5(SiO4,PO4)3(OH,F)
Help on Composition: Composition: Molecular Weight = 769.69 gm
   Strontium       0.34 %  Sr    0.40 % SrO
   Calcium        10.15 %  Ca   14.21 % CaO
   Lanthanum      13.72 %  La   16.09 % La2O3
   Cerium         25.30 %  Ce   29.64 % Ce2O3
   Praeseodymium   3.11 %  Pr    3.64 % Pr2O3
   Samarium        0.59 %  Sm    0.68 % Sm2O3
   Yttrium         1.04 %  Y     1.32 % Y2O3
   Thorium         1.51 %  Th    1.72 % ThO2
   Silicon         9.78 %  Si   20.92 % SiO2
   Phosphorus      1.25 %  P     2.86 % P2O5
   Neodymium       5.81 %  Nd    6.78 % Nd2O3
   Oxygen         24.99 %  O
   Fluorine        2.42 %  F     2.42 % F
                    -   %   F    -1.02 % -O=F2    
                 ______        ______ 
                 100.00 %       99.65 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.95Ce1.39La0.76Nd0.31Pr0.17Y0.09Th0.05Sr0.03Sm0.03Si2.68P0.31O12.02F0.98
Help on Environment: Environment: In vugs in nepheline syenite, marble zenoliths, sodalite syenite zenoliths and pegmatite dikes.
Help on IMA Status: IMA Status: Approved IMA 1994
Help on Locality: Locality: Mont Saint-Hilaire, Rouville County, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For the relationship to Britholite-Ce with the fluorine content.
Help on Name Pronunciation: Name Pronunciation: Fluorbritholite-(Ce) + Pronunciation Say FLUORBRITHOLITE-(CE)
Help on Synonym: Synonym: IMA1991-027
 

Fluorbritholite-(Ce) Image

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  Fluorbritholite-(Ce)

Comments: Amorphous (metamict) grain of fluorbritholite-(Ce) on matrix.
Location: Norra Karr, Grena, Jonkoping, Sweden. Scale: Crystal size 1 cm.
© John Veevaert

Fluorbritholite-(Ce) Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.73373
Help on Cell Dimensions: Cell Dimensions: a = 9.517, c = 6.983, Z = 2; V = 547.74 Den(Calc)= 4.67
Help on Crystal System: Crystal System: Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 63/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.845(1), 1.87(0.4), 2.822(0.4),
 

Physical Properties of Fluorbritholite-(Ce)

Help on Cleavage: Cleavage: {001} Distinct
Help on Color: Color: Yellow, Tan, Colorless, Reddish brown.
Help on Density: Density: 4.66
Help on Diaphaneity: Diaphaneity: Opaque to translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 5 - Apatite
Help on Luster: Luster: Adamantine
Help on Streak: Streak: pale brown
 

Optical Properties of Fluorbritholite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.013 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.169,KPDmeas= 0.1693,KC= 0.1672
Ncalc = 1.78
Help on Optical Data: Optical Data: Uniaxial (-), e=1.786, w=1.792, bire=0.0060.
 

Calculated Properties of Fluorbritholite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.24 gm/cc
note: Specific Gravity of Fluorbritholite-(Ce) =4.67 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEFluorbritholite-(Ce) = 286.20 barns/electron
U=PEFluorbritholite-(Ce) x relectron=1,214.60 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 29,254.55 (Gamma Ray American Petroleum Institute Units)
Concentration of Fluorbritholite-(Ce) per GRapi unit = 34.18 (PPM)

Fluorbritholite-(Ce) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from Fluorbritholite-(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 / 7.42 cm 676,033 1.83E-05 29,254.55 9.62
100 gm / 3.45 cm 67,603 1.83E-06 2,925.46 0.96
10 gm / 1.60 cm 6,760 1.83E-07 292.55 0.10
1 gm / 7.42 mm 676 1.83E-08 29.25 0.01
0.1 gm / 3.45 mm 68 1.83E-09 2.93 0.00
0.01 gm / 1.60 mm 7 1.83E-10 0.29 0.00
0.001 gm / 0.74 mm 1 1.83E-11 0.03 0.00

Weight of pure Fluorbritholite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.67 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
 

Fluorbritholite-(Ce) Classification

Help on  Dana Class: Dana Class: 52.04.09.08 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
  (52.04)with cations in [6] and/or > [6] coordination
  (52.04.09)Silicate apatites
 
52.04.09.00 Ellestadite* Ca5(SiO4,PO4,SO4)3(F,OH,Cl) P 63/m 6/m
 
52.04.09.01 Britholite-(Ce) (Ce,Ca,Th,La,Nd)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
52.04.09.02 Britholite-(Y) (Y,Ca)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
52.04.09.03 Ellestadite-(F) Ca5(SiO4,PO4,SO4)3(F,OH,Cl) P 63/m 6/m
 
52.04.09.04 Ellestadite-(OH) Ca5(SiO4,SO4)3(OH,Cl,F) P 63/m 6/m
 
52.04.09.05 Ellestadite-(Cl) Ca5(SiO4,PO4,SO4)3(Cl,OH,F) P 63/m 6/m
 
52.04.09.06 Mattheddleite Pb20(SiO4)7(SO4)4Cl4 P 63/m 6/m
 
52.04.09.07 Karnasurtite-(Ce) (Ce,La,Th)(Ti,Nb)(Al,Fe)(Si,P)2O7(OH)4•3(H2O)(?) Unk. Hex
 
52.04.09.08 Fluorbritholite-(Ce) (Ca,Ce,La,Na)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
52.04.09.09 Fluorcalciobritholite! (Ca,REE)5[(Si,P)O4]3F P 63/m 6/m
Help on  Strunz Class: Strunz Class: 09.AH.25 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AH -Nesosilicates with CO3, SO4, PO4, etc.
 
09.AH.25 Britholite-(Ce) (Ce,Ca,Th,La,Nd)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
09.AH.25 Britholite-(Y) (Y,Ca)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
09.AH.25 Ellestadite-(Cl) Ca5(SiO4,PO4,SO4)3(Cl,OH,F) P 63/m 6/m
 
09.AH.25 Fluorbritholite-(Ce) (Ca,Ce,La,Na)5(SiO4,PO4)3(OH,F) P 63/m 6/m
 
09.AH.25 Ellestadite-(F) Ca5(SiO4,PO4,SO4)3(F,OH,Cl) P 63/m 6/m
 
09.AH.25 Ellestadite* Ca5(SiO4,PO4,SO4)3(F,OH,Cl) P 63/m 6/m
 
09.AH.25 Ellestadite-(OH) Ca5(SiO4,SO4)3(OH,Cl,F) P 63/m 6/m
 
09.AH.25 Fluorcalciobritholite! (Ca,REE)5[(Si,P)O4]3F P 63/m 6/m
 

Other Fluorbritholite-(Ce) Information

Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.81,p1013,1996) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Fluorbritholite-(Ce) :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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

Fluorbritholite-(Ce)

(Ca,Ce,La,Na)5(SiO4,PO4)3(OH,F)
Dana No: 52.04.09.08 Strunz No: 09.AH.25
Locality:

 

Notes:

 

 
   
 


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