Odinite Mineral Data
General Odinite Information
Chemical Formula:
(Fe+++,Mg,Al,Fe++,Ti,Mn)2.5(Si,Al)2O5(OH)4
Composition:
Molecular Weight = 300.61 gm
Magnesium 5.66 % Mg 9.39 % MgO
Titanium 1.59 % Ti 2.66 % TiO2
Manganese 1.83 % Mn 2.36 % MnO
Aluminum 6.28 % Al 11.87 % Al2 O3
Iron 18.58 % Fe 7.17 % FeO / 18.59 % Fe2 O3
Silicon 16.82 % Si 35.98 % SiO2
Hydrogen 1.34 % H 11.99 % H2 O
Oxygen 47.90 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Fe3+ 0.7 Mg0.7 Al0.5 Fe2+ 0.3 Ti0.1 Mn2+ 0.1 Si1.8 Al0.2 O5 (OH)4
Environment:
Formed in marine waters, a minor component of green clay infillings or replacements of microtests, bioclasts, fecal pellets, of mineral debris on shallow marine shelfs and lagoonal areas in tropical latitudes.
IMA Status:
Approved IMA 1988
Locality:
Minor component in sediments of the present day sea bottoms in lower latitudes near South America and Africa. Link to MinDat.org Location Data.
Name Origin:
Named for Gilles Serge Odin, clay mineralogist of the University P. And M. Curie, Paris, France.
Name Pronunciation:
Odinite
Odinite Crystallography
Axial Ratios:
a:b:c =0.5761:1:0.7895
Cell Dimensions:
a = 5.373, b = 9.326, c = 7.363, Z = 2; beta = 104° V = 357.99 Den(Calc)= 2.79
Crystal System:
Monoclinic - Domatic H-M Symbol (m) Space Group: Cm
X Ray Diffraction:
By Intensity(I/Io ): 7.15(1), 3.58(0.85), 1.552(0.65),
Physical Properties of Odinite
Color:
Green, Dark green.
Density:
2.6
Diaphaneity:
Translucent to Opaque
Habit:
Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye.
Hardness:
2.5 - Finger Nail
Luster:
Silky
Streak:
gray green
Optical Properties of Odinite
Optical Data:
Biaxial (?)
NCalc= 1.69 - from Gladstone-Dale relationship (KC = 0.2461) where Ncalc =Dcalc *KC +1 NCalc= 1.64 - from Gladstone-Dale relationship (KC = 0.2461) where Ncalc =Dmeas *KC +1
Calculated Properties of Odinite
Electron Density:
Bulk Density (Electron Density)=2.77 gm/cc note: Specific Gravity of Odinite =2.79 gm/cc.
Fermion Index:
Fermion Index = 0.01 Boson Index = 0.99
Photoelectric:
PEOdinite = 7.14 barns/electronU=PEOdinite x r Electron Density= 19.81 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Odinite is Not Radioactive
Odinite Classification
Dana Class:
71.01.01.05 (71) Phyllosilicate Sheets of Six-Membered Rings
(71.01) with 1:1 layers
(71.01.01) Kaolinite group
71.01.01.01 Dickite Al2Si2O5(OH)4 Cc m
71.01.01.02 Kaolinite Al2Si2O5(OH)4 P1 1
71.01.01.03 Nacrite Al2Si2O5(OH)4 Cc m
71.01.01.04 Halloysite Al2Si2O5(OH)4 Cc m
71.01.01.04a Endellite ? Al2Si2O5(OH)4•2(H2O) Cc m
71.01.01.05 Odinite (Fe,Mg,Al,Fe,Ti,Mn)2.5(Si,Al)2O5(OH)4 Cm m
Strunz Class:
09.EC.55 09 - SILICATES (Germanates)
09.E - Phyllosilicates
09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets
09.EC.55 Donbassite Al2[Al2.33][Si3AlO10](OH)8 C 2/m 2/m
09.EC.55 Baileychlore (Zn,Al,[])3[Fe2Al][Si3AlO10](OH)8 C1,C1 Tri
09.EC.55 Clinochlore (Mg,Fe)5Al(Si3Al)O10(OH)8 C 2/m 2/m
09.EC.55 Cookeite LiAl4(Si3Al)O10(OH)8 P 21 /a 2/m
09.EC.55 Chamosite (Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8 C 2/m 2/m
09.EC.55 Franklinfurnaceite Ca2(Fe,Al)MnMn3Zn2Si2O10(OH)8 C 2 2
09.EC.55 Nimite (Ni,Mg,Fe)5Al(Si3Al)O10(OH)8 C 2/m 2/m
09.EC.55 Gonyerite Mn3[Mn3Fe][(Si,Fe)4O10](OH,O)8 pseudo-HEX Ortho
09.EC.55 Odinite (Fe,Mg,Al,Fe,Ti,Mn)2.5(Si,Al)2O5(OH)4 Cm m
09.EC.55 Orthochamosite (Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8 C3m-pseudoHEX Ortho
09.EC.55 Pennantite Mn5Al(Si3Al)O10(OH)8 C 2/m 2/m
09.EC.55 Sudoite Mg2(Al,Fe)3Si3AlO10(OH)8 C 2/m 2/m
09.EC.55 Glagolevite ! NaMg6[Si3AlO10](OH,O)8•H2O C1 1
09.EC.55 Borocookeite ! Li(13x)Al(4-x)(BSi3)O10(OH,F)8[x=0-0.33] pseudo C 2/m 2/m
Other Odinite Information
References:
NAME( AntBidBlaNic2) PHYS. PROP.(Am.Min.,Vol.81,1996)
See Also:
Links to other databases for Odinite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
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Odinite
(Fe+++,Mg,Al,Fe++,Ti,Mn)2.5(Si,Al)2O5(OH)4
Dana No: 71.01.01.05 Strunz No: 09.EC.55
Locality:
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