IMA2003-017 Mineral Data

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General IMA2003-017 Information
Help on Chemical Formula: Chemical Formula: (REE,Ca)4(Fe+++,Ti,Fe++,[ ])(Ti,Fe+++,Fe++,Nb)4Si4O22
Help on Composition: Composition: Molecular Weight = 1,228.90 gm
   Calcium           3.26 %  Ca    4.56 % CaO
   La,Ce,Pr,Nd,Sm,  35.15 %  RE   41.01 % REE2O3
   Titanium          8.96 %  Ti   14.95 % TiO2
   Niobium           3.02 %  Nb    4.33 % Nb2O5
   Iron             11.82 %   Fe    4.68 % FeO / 11.70 % Fe2O3
   Silicon           9.14 %  Si   19.56 % SiO2
   Oxygen           28.64 %  O
                   ______        ______ 
                   100.00 %      100.78 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: REE3CaFe3+0.6Ti0.3Ti2Fe3+1.2Fe2+0.8Nb0.4Si4O22
Help on Environment: Environment: Fe-dominant analogue of polyakovite-(Ce)
Help on IMA Status: IMA Status: Proposed IMA 2003 (Dana # Added)
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Commission on New Minerals and Mineral Names (CNMMN)
 

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IMA2003-017 Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =2.331:1:1.9259
Help on Cell Dimensions: Cell Dimensions: a = 13.385, b = 5.742, c = 11.059, Z = 2; beta = 100.6° V = 835.45 Den(Calc)= 4.88
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.722(1), 3.49(0.8), 2.76(0.4),2.874(0.4), 3.004(0.4), 4.89(0.35),
 

Physical Properties of IMA2003-017

Help on Color: Color: Black, Brownish black.
Help on Diaphaniety: Diaphaniety: Opaque
Help on Luster: Luster: Sub Metallic
 

Optical Properties of IMA2003-017

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.074 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1954,KC= 0.2109
Help on Optical Data: Optical Data: Biaxial (-), a=1.937, g=1.97, bire=0.0330
Help on RL Anisotrophism: RL Anisotrophism: Strong.
Help on RL Bireflectance: RL Bireflectance: Weak.
Help on RL Color: RL Color: Gray with yellowish gray internal reflections.
Help on RL Pleochroism: RL Pleochroism: Weak.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of IMA2003-017 in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 470 nm   12.50   14.60 
   
 546 nm   12.10   14.40 
 589 nm   12.10   14.30 
 650 nm   11.20   13.70 
Calculated Relative Intensity Colors of IMA2003-017 in Air
Relative
Intensity		    0%   80% 100% 160% 240% 320% 400% 480% 560% 640% 720% 750%
R1                        
R2                        
 

Calculated Properties of IMA2003-017

Help on Electron Density: Electron Density:

relectron=4.52 gm/cc
note: rIMA2003-017 =4.88 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.08394
Boson Index = 0.91606
Help on Photoelectric: Photoelectric:

PEIMA2003-017 = 225.48 barns/electron
U=PEIMA2003-017 x relectron=1,020.01 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 34,884.97 (Gamma Ray American Petroleum Institute Units)

IMA2003-017 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) 871.91 ±217.98 grams of pure IMA2003-017 .

Estimated Radioactivity from IMA2003-017 - 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 / 7.31 cm 790,265 2.14E-05 34,884.97 11.47
100 gm / 3.40 cm 79,027 2.14E-06 3,488.50 1.15
10 gm / 1.58 cm 7,903 2.14E-07 348.85 0.11
1 gm / 7.31 mm 790 2.14E-08 34.88 0.01
0.1 gm / 3.40 mm 79 2.14E-09 3.49 0.00
0.01 gm / 1.58 mm 8 2.14E-10 0.35 0.00
0.001 gm / 0.73 mm 1 2.14E-11 0.03 0.00

Weight of pure IMA2003-017 in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.88 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 ( 1.76 % Th) From Sum REE Elements (35.15 % REE)
 

IMA2003-017 Classification
Help on Dana Class: Dana Class: 56.2.8.8 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O
  (56.2)with cations in [4] and/or >[4] coordination
  (56.2.8)Perierite - Chevkinite group
 
56.2.8.1 Chevkinite-(Ce) (Ce,La,Ca,Th)4(Fe,Mg)2(Ti,Fe)3Si4O22 C 2/m 2/m
 
56.2.8.2 Strontiochevkinite (Sr,REE)4Fe(Ti,Zr)2Ti2Si4O22 C 2/a 2/m
 
56.2.8.3 Perrierite-(Ce) (Ce,La,Ca)4(Fe,Mg)2(Ti,Fe)3Si4O22 C 21/a 2/m
 
56.2.8.4 Orthochevkinite* (Ce,La,Ca,Na,Th)4(Fe,Mg)2(Ti,Fe)3Si4O22 Unk Ortho
 
56.2.8.5 Rengeite! Sr4ZrTi4Si4O22 P 21/a 2/m
 
56.2.8.6 Matsubaraite! Sr4TiTi4Si4O22 P 21/a 2/m
 
56.2.8.7 Polyakovite-(Ce)! (Ce,La,Nd,Pr,Ca)4(Mg,Fe)(Cr,Fe)2(Ti,Nb)2Si4O22 C 2/m 2/m
 
56.2.8.8 IMA2003-017 ! (REE,Ca)4(Fe,Ti,Fe,[])(Ti,Fe,Fe,Nb)4Si4O22 C 2/m 2/m
Help on Strunz Class: Strunz Class: VIII/CX.00-00 VIII - Silicates
  VIII/CX - Unclassified Strunz Sorosilicates
  VIII/CX.00 - Perrierite Group
 

Other IMA2003-017 Information
Help on See Also: See Also: Links to other databases for IMA2003-017 :
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)

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Print or Cut-and-Paste your IMA2003-017 Specimen Label here :

IMA2003-017

(REE,Ca)4(Fe+++,Ti,Fe++,[ ])(Ti,Fe+++,Fe++,Nb)4Si4O22
Dana No: 56.2.8.8 Strunz No: VIII/CX.00-00
Locality:

 

Notes:

 
 
   
 
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