Okhotskite-(Mg) Mineral Data + Say OKHOTSKITE-(MG)

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General Okhotskite-(Mg) Information

Help on Chemical  Formula: Chemical Formula: Ca3(Mg,Mn++)(Mn+++,Al,Fe+++)(SiO4)(Si2O7)(OH)2·(H2O)
Help on Composition: Composition: Molecular Weight = 518.28 gm
   Calcium    14.69 %  Ca   20.56 % CaO
   Magnesium   3.28 %  Mg    5.44 % MgO
   Manganese  13.78 %  Mn    4.11 % MnO / 15.23 % Mn2O3
   Aluminum    2.60 %  Al    4.92 % Al2O3
   Iron        5.39 %  Fe    7.70 % Fe2O3
   Silicon    16.26 %  Si   34.78 % SiO2
   Hydrogen    0.78 %  H     6.95 % H2O
   Oxygen     43.22 %  O
             ______        ______ 
             100.00 %       99.69 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca1.9Mg0.7Mn2+0.3Mn3+Al0.5Fe3+0.5(SiO4)(Si2O7)(OH)2·(H2O)
Help on IMA Status: IMA Status: Not Approved IMA 1987
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named in 1987 by Togari and Akasaka for the Sea of Okhotsk, along which the mine is located.
 

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Okhotskite-(Mg) Crystallography

Help on Crystal System: Crystal System: Monoclinic
 

Calculated Properties of Okhotskite-(Mg)

Help on Fermion Index Fermion Index Fermion Index = 0.01242
Boson Index = 0.98758
Help on Photoelectric: Photoelectric:

PEOkhotskite-(Mg) = 7.65 barns/electron
U=PEOkhotskite-(Mg) x relectron= . barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Okhotskite-(Mg) is Not Radioactive

 

Okhotskite-(Mg) Classification

Help on  Dana Class: Dana Class: 58.2.2.3 (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)
  (58.2.2)Pumpellyite group
 
58.2.2.1 Julgoldite-(Fe++) Ca2Fe(Fe,Al)2(SiO4)(Si2O7)(OH)2·(H2O) C 2/m 2/m
 
58.2.2.2 Julgoldite-(Fe+++) Ca2Fe(Fe,Al)2(SiO4)(Si2O7)(O,OH)2·(H2O) A2/m 2/m
 
58.2.2.3 Okhotskite-(Mg) * Ca3(Mg,Mn)(Mn,Al,Fe)(SiO4)(Si2O7)(OH)2·(H2O) Mono
 
58.2.2.4 Okhotskite-(Mn++) Ca2(Mn,Mg)(Mn,Al,Fe)Si3O10(OH)4 A2/m 2/m
 
58.2.2.5 Pumpellyite-(Fe++) Ca2Fe(Al,Fe)2(SiO4)(Si2O7)(OH)2·(H2O) A2/m 2/m
 
58.2.2.6 Pumpellyite-(Fe+++) Ca2FeAl2(SiO4)(Si2O7)(OH,O)2·(H2O) A2/m 2/m
 
58.2.2.7 Pumpellyite-(Mg) Ca2MgAl2(SiO4)(Si2O7)(OH)2·(H2O) A2/m 2/m
 
58.2.2.8 Pumpellyite-(Mn++) Ca2(Mn,Mg)(Al,Mn,Fe)2(SiO4)(Si2O7(OH)2·(H2O) A2/m 2/m
 
58.2.2.9 Shuiskite Ca2(Mg,Al)(Cr,Al)2(SiO4)(Si2O7)(OH)2·(H2O) A2/m 2/m
Help on  Strunz Class: Strunz Class: VIII/C.24-80 VIII - Silicates
  VIII/C - Sorosilicates, mixed structure with [SiO4]2- "inseln" and [Si2O7]6- groups
  VIII/C.24 - Pumpellyite group
 
VIII/C.24-10 Macfallite Ca2(Mn,Al)3(SiO4)(Si2O7)(OH)3 P 21/m 2/m
 
VIII/C.24-20 Sursassite Mn2Al3(SiO4)(Si2O7)(OH)3 P 21/m 2/m
 
VIII/C.24-30 Pumpellyite-(Mg) Ca2MgAl2(SiO4)(Si2O7)(OH)2·(H2O) A2/m 2/m
 
VIII/C.24-40 Pumpellyite-(Fe++) Ca2Fe(Al,Fe)2(SiO4)(Si2O7)(OH)2·(H2O) A2/m 2/m
 
VIII/C.24-42 Pumpellyite-(Fe+++) Ca2FeAl2(SiO4)(Si2O7)(OH,O)2·(H2O) A2/m 2/m
 
VIII/C.24-50 Pumpellyite-(Mn++) Ca2(Mn,Mg)(Al,Mn,Fe)2(SiO4)(Si2O7(OH)2·(H2O) A2/m 2/m
 
VIII/C.24-60 Julgoldite-(Fe++) Ca2Fe(Fe,Al)2(SiO4)(Si2O7)(OH)2·(H2O) C 2/m 2/m
 
VIII/C.24-61 Julgoldite-(Fe+++) Ca2Fe(Fe,Al)2(SiO4)(Si2O7)(O,OH)2·(H2O) A2/m 2/m
 
VIII/C.24-70 Shuiskite Ca2(Mg,Al)(Cr,Al)2(SiO4)(Si2O7)(OH)2·(H2O) A2/m 2/m
 
VIII/C.24-80 Okhotskite-(Mg) Ca3(Mg,Mn)(Mn,Al,Fe)(SiO4)(Si2O7)(OH)2·(H2O) Mono
 
VIII/C.24-80* Okhotskite-(Mn++) Ca2(Mn,Mg)(Mn,Al,Fe)Si3O10(OH)4 A2/m 2/m
 
VIII/C.24-90 Samfowlerite Ca14Mn3Zn2(Be,Zn)2Be6(SiO4)6(Si2O7)4(OH,F)6 P 21/c 2/m
 

Other Okhotskite-(Mg) Information

Help on References: References: NAME( Dana8)
Help on See Also: See Also: Links to other databases for Okhotskite-(Mg) :
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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Okhotskite-(Mg)

Ca3(Mg,Mn++)(Mn+++,Al,Fe+++)(SiO4)(Si2O7)(OH)2·(H2O)
Dana No: 58.2.2.3 Strunz No: VIII/C.24-80
Locality:

 

Notes:

 

 
   
 
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