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 % Al₂O₃

Iron 18.58 % Fe 7.17 % FeO / 18.59 % Fe₂O₃

Silicon 16.82 % Si 35.98 % SiO₂

Hydrogen 1.34 % H 11.99 % H₂O

Oxygen 47.90 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺_0.7Mg_0.7Al_0.5Fe²⁺_0.3Ti_0.1Mn²⁺_0.1Si_1.8Al_0.2O₅(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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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:

PE_Odinite= 7.14 barns/electron
U=PE_Odinite x rElectron 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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Print or Cut-and-Paste your Odinite Specimen Label here :

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:

Notes:

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