IMA2002-049 Mineral Data


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General IMA2002-049 Information
Help on Chemical Formula: Chemical Formula: (Mn++,Ca)(Ce,REE)AlMn+++Mn++(Si2O7)(SiO4)O(OH)
Help on Composition: Composition: Molecular Weight = 622.42 gm
   Calcium           1.61 %  Ca    2.25 % CaO
   Cerium           16.88 %  Ce   19.78 % Ce2O3
   La,Ce,Pr,Nd,Sm,   5.78 %  RE    6.75 % REE2O3
   Manganese        24.27 %  Mn   19.94 % MnO / 12.68 % Mn2O3
   Aluminum          4.33 %  Al    8.19 % Al2O3
   Silicon          13.54 %  Si   28.96 % SiO2
   Hydrogen          0.16 %  H     1.45 % H2O
   Oxygen           33.42 %  O
                   ______        ______ 
                   100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+0.75Ca0.25Ce0.75REE0.25AlMn3+Mn2+(Si2O7)(SiO4)O(OH)
Help on Environment: Environment: Epidote group; structure determined
Help on IMA Status: IMA Status: Proposed IMA 2002 (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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IMA2002-049 Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =1.5512:1:1.7546
Help on Cell Dimensions: Cell Dimensions: a = 8.901, b = 5.738, c = 10.068, Z = 2; beta = 113.425° V = 471.83 Den(Calc)= 4.38
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): 2.896(1), 2.662(0.58), 2.707(0.43),3.51(0.37), 2.713(0.34), 2.591(0.32), 2.185(0.31),
 

Physical Properties of IMA2002-049

Help on Color: Color: Dark brown.
Help on Diaphaniety: Diaphaniety: Transparent
Help on Luster: Luster: Vitreous - Adamantine
 

Optical Properties of IMA2002-049

Help on Optical Data: Optical Data: Biaxial (+), a=1.74
 

Calculated Properties of IMA2002-049

Help on Electron Density: Electron Density:

relectron=4.12 gm/cc
note: rIMA2002-049 =4.38 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.01726
Boson Index = 0.98274
Help on Photoelectric: Photoelectric:

PEIMA2002-049 = 125.06 barns/electron
U=PEIMA2002-049 x relectron= 514.85 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 22,745.44 (Gamma Ray American Petroleum Institute Units)

IMA2002-049 is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Radioactivity from IMA2002-049 - 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 / 7.58 cm 508,211 1.37E-05 22,745.44 7.48
100 gm / 3.52 cm 50,821 1.37E-06 2,274.54 0.75
10 gm / 1.63 cm 5,082 1.37E-07 227.45 0.07
1 gm / 7.58 mm 508 1.37E-08 22.75 0.01
0.1 gm / 3.52 mm 51 1.37E-09 2.27 0.00
0.01 gm / 1.63 mm 5 1.37E-10 0.23 0.00
0.001 gm / 0.76 mm 1 1.37E-11 0.02 0.00

Weight of pure IMA2002-049 in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.38 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 ( 1.13 % Th) From Sum REE Elements (22.67 % REE)
 

IMA2002-049 Classification
Help on Dana Class: Dana Class: 58.2.1a.19 (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/CX.00-00 VIII - Silicates
  VIII/CX - Unclassified Strunz Sorosilicates
  VIII/CX.00 - Allanite Subgroup
 

Other IMA2002-049 Information
Help on See Also: See Also: Links to other databases for IMA2002-049 :
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 IMA2002-049 Specimen Label here :

IMA2002-049

(Mn++,Ca)(Ce,REE)AlMn+++Mn++(Si2O7)(SiO4)O(OH)
Dana No: 58.2.1a.19 Strunz No: VIII/CX.00-00
Locality:

 

Notes:

 
 
   
 
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