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Bussyite-(Ce) Mineral Data

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General Bussyite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: (Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4
Help on Composition: Composition: Molecular Weight = 1,329.21 gm
   Potassium       0.04 %  K     0.05 % K2O
   Sodium          5.88 %  Na    7.93 % Na2O
   Calcium         3.98 %  Ca    5.56 % CaO
   Europium        0.09 %  Eu    0.11 % Eu2O3
   Lanthanum       2.35 %  La    2.76 % La2O3
   Cerium          8.68 %  Ce   10.16 % Ce2O3
   Praeseodymium   1.09 %  Pr    1.28 % Pr2O3
   Samarium        0.89 %  Sm    1.04 % Sm2O3
   Gadolinium      0.92 %  Gd    1.06 % Gd2O3
   Yttrium         1.62 %  Y     2.06 % Y2O3
   Thorium         3.02 %  Th    3.44 % ThO2
   Magnesium       0.02 %  Mg    0.04 % MgO
   Manganese       2.00 %  Mn    2.59 % MnO
   Beryllium       3.12 %  Be    8.67 % BeO
   Aluminum        0.45 %  Al    0.85 % Al2O3
   Silicon        18.80 %  Si   40.22 % SiO2
   Hydrogen        0.25 %  H     2.26 % H2O
   Neodymium       4.05 %  Nd    4.72 % Nd2O3
   Oxygen         38.91 %  O
   Fluorine        3.82 %  F     3.82 % F
                    -   %   F    -1.61 % -O=F2    
                 ______        ______ 
                 100.00 %       96.99 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ce0.82Nd0.37Y0.24Th0.17Pr0.1Sm0.07Gd0.07Eu0.008Ca0.77La0.22Na3�(H2O)Ca0.54K0.01 Mn2+0.48Na0.4Mg0.01Si8.89Be4.6Al0.22(OH)1.33
Help on Environment: Environment: Found in a serandite-bearing pocket, approximately 15 x 30 cm across, in a pegmatite hosted by nepheline syenite with albite phenocrysts. Strongly resembles that of semenovite-(Ce) and the closely related mineral harsti
Help on IMA Status: IMA Status: Approved IMA 2007 (Dana # Added)
Help on Locality: Locality: Poudrette quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Antoine Alexandre Brutus Bussy (1794-1882), French chemist who is co-credited in isolating the element beryllium in August 1828.
Help on Synonym: Synonym: IMA2007-039
 

Bussyite-(Ce) Image

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  Bussyite-(Ce)

Comments: SEM image of a spray of bussyite-(Ce) with hexagonal plates of catapleiite. Inset image shows detail of crystal terminations. (CanMin, v47:193).
Location: Poudrette quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Scale: Picture size 1.5mm.
© Canadian Mineralogist

Bussyite-(Ce) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8374:1:1.1916
Help on Cell Dimensions: Cell Dimensions: a = 11.654, b = 13.916, c = 16.583, Z = 4; beta = 95.86° V = 2,675.33 Den(Calc)= 3.30
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.12(1), 2.863(0.48), 3.543(0.39),2.668(0.33), 2.959(0.24), 2.749(0.23), 3.454(0.21), 3.176(0.19),
 

Physical Properties of Bussyite-(Ce)

Help on Cleavage: Cleavage: {101} Perfect
Help on Color: Color: Pale pinkish orange.
Help on Density: Density: 3
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Splintery - Brittle fracture leaving splintery fragments.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Bussyite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.049 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.047 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.178,KPDmeas= 0.1958,KC= 0.1867
Ncalc = 1.56 - 1.62
Help on Optical Data: Optical Data: Biaxial (-), a=1.574, b=1.591, g=1.597, bire=0.0230, 2V(Calc)=60, 2V(Meas)=63. Dispersion dispersion not observed.
 

Calculated Properties of Bussyite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.14 gm/cc
note: Specific Gravity of Bussyite-(Ce) =3.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.05
Boson Index = 0.95
Help on Photoelectric: Photoelectric: PEBussyite-(Ce) = 163.73 barns/electron
U=PEBussyite-(Ce) x relectron= 514.33 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 61,380.67 (Gamma Ray American Petroleum Institute Units)
Concentration of Bussyite-(Ce) per GRapi unit = 16.29 (PPM)

Bussyite-(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) 495.54 ±123.89 grams of pure Bussyite-(Ce) .

Estimated Radioactivity from Bussyite-(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 / 8.33 cm 1,354,125 3.66E-05 61,380.67 20.18
100 gm / 3.87 cm 135,413 3.66E-06 6,138.07 2.02
10 gm / 1.80 cm 13,541 3.66E-07 613.81 0.20
1 gm / 8.33 mm 1,354 3.66E-08 61.38 0.02
0.1 gm / 3.87 mm 135 3.66E-09 6.14 0.00
0.01 gm / 1.80 mm 14 3.66E-10 0.61 0.00
0.001 gm / 0.83 mm 1 3.66E-11 0.06 0.00

Weight of pure Bussyite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.30 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
 

Bussyite-(Ce) Classification

Help on  Dana Class: Dana Class: 72.05.02.08 (72)Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
  (72.05)with corrugated and complex layers
  (72.05.02)Leucospenite and related species
 
72.05.02.01 Leucosphenite Na4BaTi2O2[B2Si10O28] C 2/m 2/m
 
72.05.02.02 Nordite-(Ce) (Ce,La,Ca)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17 Pcca 2/m 2/m 2/m
 
72.05.02.03 Nordite-(La) (Na,Mn)3(Sr,Ca)(La,Ce)(Zn,Mg)Si6O17 Pcca 2/m 2/m 2/m
 
72.05.02.04 Semenovite (Na,Ca)9(Ce,La)2(Fe,Mn)(Si,Be)20(O,OH,F)48 Pmmn 2/m 2/m 2/m
 
72.05.02.05 Ferronordite-(Ce)! Na3SrCeFeSi6O17 Pcca 2/m 2/m 2/m
 
72.05.02.06 Manganonordite-(Ce)! Na3SrCeMnSi6O17 Pcca 2/m 2/m 2/m
 
72.05.02.07 Ferronordite-(La)! Na3Sr(La,Ce)FeSi6O17 Pcca 2/m 2/m 2/m
 
72.05.02.08 Bussyite-(Ce)! (Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4 C 2/c 2/m
Help on  Strunz Class: Strunz Class: 09.EA.80 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.EA -Single nets of tetrahedra with 4-, 5-, (6-), and 8-membered rings
 
09.EA.80 Bussyite-(Ce)! (Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4 C 2/c 2/m
 

Other Bussyite-(Ce) Information

Help on References: References: NAME( CanMin, v47:193) PHYS. PROP.(CanMin, v47:193) OPTIC PROP.(CanMin, v47:193)
Help on See Also: See Also: Links to other databases for Bussyite-(Ce) :
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 Bussyite-(Ce) Specimen Label here :

Bussyite-(Ce)

(Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4
Dana No: 72.05.02.08 Strunz No: 09.EA.80
Locality:

 

Notes:

 

 
   
 


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