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Vastmanlandite-(Ce) Mineral Data

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General Vastmanlandite-(Ce) Information

Help on Chemical  Formula: Chemical Formula: (Ce,La)3CaAl2Mg2[Si2O7][SiO4]3F(OH)2
Help on Composition: Composition: Molecular Weight = 1,094.51 gm
   Calcium         3.37 %  Ca    4.71 % CaO
   Lanthanum      11.80 %  La   13.84 % La2O3
   Cerium         20.74 %  Ce   24.29 % Ce2O3
   Praeseodymium   1.80 %  Pr    2.11 % Pr2O3
   Samarium        0.41 %  Sm    0.48 % Sm2O3
   Gadolinium      0.14 %  Gd    0.17 % Gd2O3
   Yttrium         0.16 %  Y     0.21 % Y2O3
   Magnesium       3.38 %  Mg    5.60 % MgO
   Aluminum        4.63 %  Al    8.76 % Al2O3
   Iron            2.81 %   Fe    1.18 % FeO /  2.70 % Fe2O3
   Silicon        12.68 %  Si   27.12 % SiO2
   Phosphorus      0.03 %  P     0.06 % P2O5
   Hydrogen        0.18 %  H     1.65 % H2O
   Neodymium       5.53 %  Nd    6.46 % Nd2O3
   Oxygen         31.25 %  O
   Fluorine        1.08 %  F     1.08 % F
                    -   %   F    -0.45 % -O=F2    
                 ______        ______ 
                 100.00 %       99.95 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ce1.62La0.93Nd0.42Pr0.14Sm0.03Y0.02Gd0.01Ca0.92Mg1.52Fe2+0.18Fe3+0.37Al1.88Si4.94 P0.01O19(OH)2F0.62O0.38
Help on Environment: Environment: Material is from a now abandoned Fe mine, the Malmk�rra deposit, which consists of disseminated magnetite-amphibole skarn replacements in marble. Related to epidote group; structure determined.
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Lanthanide mineral deposits in V�stmanland county, Bergslagen mining region, south-central Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The name is for V�stmanland, the county where the majority of the lanthanide deposits are found.
Help on Synonym: Synonym: IMA2002-025
 

Vastmanlandite-(Ce) Image

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  Vastmanlandite-(Ce)

Comments: Brown-black, massive, fine-grained vastmanlandite-(Ce) with fluorbritholithe-(Ce).
Location: Malmkärragruvan, Norberg, Sweden. Scale: Box Size 3 x 4 cm.
© Sonke Stolze / Systematic Minerals

Vastmanlandite-(Ce) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.5665:1:2.7786
Help on Cell Dimensions: Cell Dimensions: a = 8.939, b = 5.706, c = 15.855, Z = 2; beta = 94.58° V = 806.12 Den(Calc)= 4.51
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.9831(1)(114 ), 3.503(0.2)(210 ), 2.625(0.19)(311),15.81(0.16)(001), 2.1874(0.15)(402), 2.6852(0.13)(121),
 

Physical Properties of Vastmanlandite-(Ce)

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Dark brown.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: yellowish gray
 

Optical Properties of Vastmanlandite-(Ce)

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.027 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1761,KC= 0.181
Ncalc = 1.82
Help on Optical Data: Optical Data: Biaxial (+), a=1.781, b=1.792, g=1.81, bire=0.0290, 2V(Calc)=78, 2V(Meas)=75. Dispersion strong, r > v.
 

Calculated Properties of Vastmanlandite-(Ce)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.18 gm/cc
note: Specific Gravity of Vastmanlandite-(Ce) =4.51 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEVastmanlandite-(Ce) = 204.98 barns/electron
U=PEVastmanlandite-(Ce) x relectron= 856.48 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 39,982.33 (Gamma Ray American Petroleum Institute Units)
Concentration of Vastmanlandite-(Ce) per GRapi unit = 25.01 (PPM)

Vastmanlandite-(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) 760.75 ±190.19 grams of pure Vastmanlandite-(Ce) .

Estimated Radioactivity from Vastmanlandite-(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 / 7.51 cm 906,257 2.45E-05 39,982.33 13.14
100 gm / 3.49 cm 90,626 2.45E-06 3,998.23 1.31
10 gm / 1.62 cm 9,063 2.45E-07 399.82 0.13
1 gm / 7.51 mm 906 2.45E-08 39.98 0.01
0.1 gm / 3.49 mm 91 2.45E-09 4.00 0.00
0.01 gm / 1.62 mm 9 2.45E-10 0.40 0.00
0.001 gm / 0.75 mm 1 2.45E-11 0.04 0.00

Weight of pure Vastmanlandite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.51 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 ( 2.02 % Th) From Sum REE Elements (40.43 % REE)
 

Vastmanlandite-(Ce) Classification

Help on  Dana Class: Dana Class: 58.02.01c.08 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups
  (58.02)with cations in [6] and higher coordination; single and double groups (n=1,2)
  (58.02.01c)Epidote group (Allanite subgroup)
 
58.02.01c.01 Allanite-(Ce) (Ce,Ca,Y)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m
 
58.02.01c.02 Allanite-(La)! Ca(REE,Ca)Al2(Fe,Fe)(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
58.02.01c.03 Allanite-(Y) (Y,Ce,Ca)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m
 
58.02.01c.04 Dissakisite-(Ce) Ca(Ce,REE)(Mg,Fe)(Al,Fe)2Si3O12(OH) P 21/m 2/m
 
58.02.01c.05 Dissakisite-(La)! (Ca,Fe,Th,La)(La,REE,Ca)(Al,Cr,Ti)2(Mg,Fe,Al)Si3O12(OH,F)withLa>Ce P 21/m 2/m
 
58.02.01c.06 Manganiandrosite-(La)! (Mn,Ca)(La,Ce,Ca,Nd)AlMnMn(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
58.02.01c.07 Ferriallanite-(Ce)! CaCe(Fe,Fe,Al)3[SiO4][Si2O7]O(OH) P 21/m 2/m
 
58.02.01c.08 Vastmanlandite-(Ce)! (Ce,La)3CaAl2Mg2[Si2O7][SiO4]3F(OH)2 P 21/m 2/m
 
58.02.01c.09 Manganiandrosite-(Ce)! (Mn,Ca)(Ce,REE)AlMnMn(Si2O7)(SiO4)O(OH) P 21/m 2/m
 
58.02.01c.10 Vanadoandrosite-(Ce)! (Mn,Ca)(REE)VAlMn(Si2O7)(SiO4)O(OH) P 21/m 2/m
Help on  Strunz Class: Strunz Class: 09.BG.55 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BG -Sorosilicates with mixed SiO4 and Si2O7 groups;
 
09.BG.55 Vastmanlandite-(Ce)! (Ce,La)3CaAl2Mg2[Si2O7][SiO4]3F(OH)2 P 21/m 2/m
 

Other Vastmanlandite-(Ce) Information

Help on References: References: NAME( AmMin, v90, p1948) PHYS. PROP.(AmMin, v90, p1948) OPTIC PROP.(AmMin, v90, p1948)
Help on See Also: See Also: Links to other databases for Vastmanlandite-(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 Vastmanlandite-(Ce) Specimen Label here :

Vastmanlandite-(Ce)

(Ce,La)3CaAl2Mg2[Si2O7][SiO4]3F(OH)2
Dana No: 58.02.01c.08 Strunz No: 09.BG.55
Locality:

 

Notes:

 

 
   
 


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