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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

Ferriallanite-(Ce) Image

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  Ferriallanite-(Ce)   Kainosite-(Y)

Comments: Short prismatic black crystals of ferriallanite-(Ce) in white slightly weathered kainosite-(Y). Orange prisms are zircons of the first generation. Fragment of the holotype specimen.
Location: Neprimetnyi pegmatite, Mount Ulyn Khuren, Khaldzan Buragtag Massif, Altai Mts, Hovd Aimag (Khovd Aimag), Mongolia. Scale: Crystal Size 2 mm.
© Pavel M. Kartashov

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  Fergusonite-(Nd)   Ferriallanite-(Ce)

Comments: Orange-brown ferusonite-(Nd) grains in ferriallanite-(Ce) zone of the vein. Main black inclusions are ferriallanite-(Ce) crystals. White matrix is mixture of calcian strontianite and strontian calcite.
Location: Tornebohmite vein, Biraya Fe-REE ore occurrence, Biraya and Bya Rivers confluence area (Chara Basin), Vitim Plateau, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia. Scale: FOV 1 cm.
© Pavel M. Kartashov

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 - Prismatic H-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)(

Physical Properties of Ferriallanite-(Ce)

Help on Cleavage: Cleavage: None
Help on Color: Color: Black.
Help on Density: Density: 4.22
Help on Diaphaneity: Diaphaneity: 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 Gladstone-Dale: Gladstone-Dale: CI meas= 0.049 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.049 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2022,KPDmeas= 0.2022,KC= 0.2127
Ncalc = 1.9
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: Bulk Density (Electron Density)=4.00 gm/cc
note: Specific Gravity of Ferriallanite-(Ce) =4.22 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEFerriallanite-(Ce) = 110.12 barns/electron
U=PEFerriallanite-(Ce) x relectron= 440.92 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 21,252.92 (Gamma Ray American Petroleum Institute Units)
Concentration of Ferriallanite-(Ce) per GRapi unit = 47.05 (PPM)

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

Estimated Radioactivity from Ferriallanite-(Ce) - weak
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 7.68 cm 470,393 1.27E-05 21,252.92 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: 58.02.01c.07 (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.05b 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BG -Sorosilicates with mixed SiO4 and Si2O7 groups;
09.BG.05b Allanite-(La)! Ca(REE,Ca)Al2(Fe,Fe)(SiO4)(Si2O7)O(OH) P 21/m 2/m
09.BG.05b Allanite-(Y) (Y,Ce,Ca)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m
09.BG.05b Allanite-(Ce) (Ce,Ca,Y)2(Al,Fe)3(SiO4)3(OH) P 21/m 2/m
09.BG.05b Manganiandrosite-(La)! (Mn,Ca)(La,Ce,Ca,Nd)AlMnMn(SiO4)(Si2O7)O(OH) P 21/m 2/m
09.BG.05b Dissakisite-(Ce) Ca(Ce,REE)(Mg,Fe)(Al,Fe)2Si3O12(OH) P 21/m 2/m
09.BG.05b Manganiandrosite-(Ce)! (Mn,Ca)(Ce,REE)AlMnMn(Si2O7)(SiO4)O(OH) P 21/m 2/m
09.BG.05b Vanadoandrosite-(Ce)! (Mn,Ca)(REE)VAlMn(Si2O7)(SiO4)O(OH) P 21/m 2/m
09.BG.05b 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
09.BG.05b Ferriallanite-(Ce)! CaCe(Fe,Fe,Al)3[SiO4][Si2O7]O(OH) P 21/m 2/m
09.BG.05b Uedaite-(Ce)! MnCeAl2Fe(Si2O7)(SiO4)O(OH) P 21/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 - 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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Dana No: 58.02.01c.07 Strunz No: 09.BG.05b





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