Ferriallanite-(Ce) Mineral Data


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General Ferriallanite-(Ce) Information
Help on Chemical Formula: Chemical Formula: CaCe(Fe+++,Fe++,Al)3[SiO4][Si2O7]O(OH)
Help on Composition: Composition: Molecular Weight = 613.85 gm
   Calcium     7.05 %  Ca    9.87 % CaO
   Cerium     21.00 %  Ce   24.60 % Ce2O3
   Titanium    1.09 %  Ti    1.82 % TiO2
   Manganese   0.63 %  Mn    0.81 % MnO
   Aluminum    2.99 %  Al    5.65 % Al2O3
   Iron       19.74 %  Fe   10.89 % FeO / 16.13 % Fe2O3
   Silicon    13.45 %  Si   28.78 % SiO2
   Hydrogen    0.16 %  H     1.47 % H2O
   Oxygen     33.88 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.97Ce0.03Ce0.89Ca0.11Fe3+0.8Ti0.14Al0.06Al0.56Fe3+0.44Fe2+0.93Mn2+0.07Si0.94 Al0.06O4(Si2O7)O(OH)
Help on Environment: Environment: In an alkaline granitic pegmatite.
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Mount Ylyn Khuren, Altia Range, Mongolian People's Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Fe3+ analogue of allanite-(Ce)
Help on Synonym: Synonym: Cerine
  IMA2000-041
 

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Ferriallanite-(Ce) Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.5356:1:1.7446
Help on Cell Dimensions: Cell Dimensions: a = 8.962, b = 5.836, c = 10.182, Z = 2; beta = 115.02° V = 482.57 Den(Calc)= 4.22
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.18(1)(112,123,401), 2.14(0.8)(221,403,223,02.72(0.8)(120,013), 2.93(0.65)(113), 2.63(0.6)(311), 3.55(0.55)(211), 2.34(0.55)(
Click Here for Large Ferriallanite-(Ce) Structure Window Crystal Structure:

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Kartashov P M , Ferraris G , Ivaldi G , Sokolova E V , McCammon C A , The Canadian Mineralogist , 41 (2003) p.829-830, Ferriallanite-(Ce), CaCeFeAlFe(SiO4)(Si2O7)O(OH), a new member of the, epidote group: Description, X-ray and Mossbauer study: Errata, Note: supercedes data from The Canadian Mineralogist 40 (2002) 1641-1648

 

Physical Properties of Ferriallanite-(Ce)

Help on Cleavage: Cleavage: None
Help on Color: Color: Black.
Help on Density: Density: 4.22
Help on Diaphaniety: Diaphaniety: Opaque to translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape.
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luster: Luster: Vitreous - Resinous
Help on Streak: Streak: brown
 

Optical Properties of Ferriallanite-(Ce)

Help on Optical Data: Optical Data: Biaxial (-), a=1.825, b=1.855, g=1.88, bire=0.0550
Help on RL Color: RL Color: Black with red or orange internal reflections.
 

Calculated Properties of Ferriallanite-(Ce)

Help on Electron Density: Electron Density:

relectron=4.00 gm/cc
note: rFerriallanite-(Ce) =4.22 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.01213
Boson Index = 0.98787
Help on Photoelectric: Photoelectric:

PEFerriallanite-(Ce) = 110.12 barns/electron
U=PEFerriallanite-(Ce) x relectron= 440.92 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 21,252.91 (Gamma Ray American Petroleum Institute Units)

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

Estimated Radioactivity from Ferriallanite-(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 / 7.68 cm 470,393 1.27E-05 21,252.91 6.99
100 gm / 3.56 cm 47,039 1.27E-06 2,125.29 0.70
10 gm / 1.65 cm 4,704 1.27E-07 212.53 0.07
1 gm / 7.68 mm 470 1.27E-08 21.25 0.01
0.1 gm / 3.56 mm 47 1.27E-09 2.13 0.00
0.01 gm / 1.65 mm 5 1.27E-10 0.21 0.00
0.001 gm / 0.77 mm 0 1.27E-11 0.02 0.00

Weight of pure Ferriallanite-(Ce) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.22 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 ( 1.05 % Th) From Sum REE Elements (21.00 % REE)
 

Ferriallanite-(Ce) Classification
Help on Dana Class: Dana Class: 58.2.1a.14 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups
  (58.2)with cations in [6] and higher coordination; single and double groups (n=1,2)
  (58.2.1a)Epidote group (Epidote subgroup)
 
58.2.1a.1 Allanite-(Ce) (Ce,Ca,Y)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m
 
58.2.1a.2 Allanite-(La)! Ca(REE,Ca)Al2(Fe,Fe)(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
58.2.1a.3 Allanite-(Y) (Y,Ce,Ca)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m
 
58.2.1a.4 Clinozoisite Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
58.2.1a.5 Dissakisite-(Ce) Ca(Ce,REE)(Mg,Fe)(Al,Fe)2Si3O12(OH) P 21/m 2/m
 
58.2.1a.6 Dollaseite-(Ce) CaCeMg2AlSi3O11(OH,F)2 P 21/m 2/m
 
58.2.1a.7 Epidote Ca2(Fe,Al)3(SiO4)3(OH)=Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
58.2.1a.8 Hancockite (Ca,Pb,Sr)2(Al,Fe)3(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
58.2.1a.9 Khristovite-(Ce) (Ca,REE)(Ce,REE)(Mg,Fe,Cr,Ti,V,Al)MnAl(SiO4)(Si2O7)(OH)(F,O) P 21/m 2/m
 
58.2.1a.10 Mukhinite Ca2Al2V(SiO4)3(OH) P 21/m 2/m
 
58.2.1a.11 Piemontite Ca2(Al,Mn,Fe)3(SiO4)3(OH)=Ca2(Mn,Fe)Al2(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
58.2.1a.12 Strontiopiemontite (Ca,Mn)(Sr,Ca)Mn(Al,Mn,Fe)2(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
58.2.1a.13 Androsite-(La)! (Mn,Ca)(La,Ce,Ca,Nd)AlMnMn(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
58.2.1a.14 Ferriallanite-(Ce) ! CaCe(Fe,Fe,Al)3[SiO4][Si2O7]O(OH) P 21/m 2/m
 
58.2.1a.15 Tweddillite! CaSr(Mn,Fe)2Al[Si3O12](OH) P 21/m 2/m
 
58.2.1a.16 Gatelite-(Ce)! (Ca,Ce,La,Nd)4(Al,Mg,Fe)4[Si2O7][SiO4]3(O,F,OH)3 P 21/a 2/m
 
58.2.1a.17 Niigataite! CaSrAl3(Si2O7)(SiO4)O(OH) P 21/m 2/m
 
58.2.1a.18 Vastmanlandite-(Ce)! Ce3CaMg2Al2Si5O19(OH)2F P 21/m 2/m
 
58.2.1a.19 IMA2002-049! (Mn,Ca)(Ce,REE)AlMnMn(Si2O7)(SiO4)O(OH) P 21/m 2/m
 
58.2.1a.20 Dissakisite-(La)! (Ca,Fe,Th)(REE,Ca)(Al,Cr,Ti)2(Mg,Fe,Al)Si3O12(OH,F)withLa>Ce P 21/m 2/m
 
58.2.1a.22 IMA2004-015! (Mn,Ca)(REE)VAlMn(Si2O7)(SiO4)O(OH) P 21/m 2/m
Help on Strunz Class: Strunz Class: VIII/C.23-85a VIII - Silicates
  VIII/C - Sorosilicates, mixed structure with [SiO4]2- "inseln" and [Si2O7]6- groups
  VIII/C.23 - Epidote group
 
VIII/C.23-10 Clinozoisite Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
VIII/C.23-20 Epidote Ca2(Fe,Al)3(SiO4)3(OH)=Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
VIII/C.23-30 Piemontite Ca2(Al,Mn,Fe)3(SiO4)3(OH)=Ca2(Mn,Fe)Al2(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
VIII/C.23-40 Strontiopiemontite (Ca,Mn)(Sr,Ca)Mn(Al,Mn,Fe)2(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
VIII/C.23-43 Niigataite! CaSrAl3(Si2O7)(SiO4)O(OH) P 21/m 2/m
 
VIII/C.23-45 Tweddillite! CaSr(Mn,Fe)2Al[Si3O12](OH) P 21/m 2/m
 
VIII/C.23-50 Mukhinite Ca2Al2V(SiO4)3(OH) P 21/m 2/m
 
VIII/C.23-52 Androsite-(La)! (Mn,Ca)(La,Ce,Ca,Nd)AlMnMn(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
VIII/C.23-55 Dollaseite-(Ce) CaCeMg2AlSi3O11(OH,F)2 P 21/m 2/m
 
VIII/C.23-58 Dissakisite-(Ce) Ca(Ce,REE)(Mg,Fe)(Al,Fe)2Si3O12(OH) P 21/m 2/m
 
VIII/C.23-60 Allanite-(Y) (Y,Ce,Ca)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m
 
VIII/C.23-65 Allanite-(La)! Ca(REE,Ca)Al2(Fe,Fe)(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
VIII/C.23-80 Allanite-(Ce) (Ce,Ca,Y)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m
 
VIII/C.23-85a Ferriallanite-(Ce) CaCe(Fe,Fe,Al)3[SiO4][Si2O7]O(OH) P 21/m 2/m
 
VIII/C.23-85 Khristovite-(Ce) (Ca,REE)(Ce,REE)(Mg,Fe,Cr,Ti,V,Al)MnAl(SiO4)(Si2O7)(OH)(F,O) P 21/m 2/m
 
VIII/C.23-87 Gatelite-(Ce)! (Ca,Ce,La,Nd)4(Al,Mg,Fe)4[Si2O7][SiO4]3(O,F,OH)3 P 21/a 2/m
 
VIII/C.23-90 Hancockite (Ca,Pb,Sr)2(Al,Fe)3(SiO4)(Si2O7)O(OH) P 21/m 2/m
 
VIII/C.23-100 Zoisite Ca2Al3(SiO4)3(OH)=Ca2AlAl2(SiO4)(Si2O7)O(OH) Pnmc 2/m 2/m 2/m
 

Other Ferriallanite-(Ce) Information
Help on References: References: NAME( CanMin, 41:809) PHYS. PROP.(CanMin, 41:809) OPTIC PROP.(CanMin, 41:809)
Help on See Also: See Also: Links to other databases for Ferriallanite-(Ce) :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

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Ferriallanite-(Ce)

CaCe(Fe+++,Fe++,Al)3[SiO4][Si2O7]O(OH)
Dana No: 58.2.1a.14 Strunz No: VIII/C.23-85a
Locality:

 

Notes:

 
 
   
 
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