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 Imogolite Mineral Data

Imogolite Mineral Data

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General Imogolite Information

Help on Chemical Formula:Chemical Formula:Al2SiO3(OH)4
Help on Composition:Composition:Molecular Weight = 198.08 gm
 
 
 
 
 
 
Help on Empirical Formula:Empirical Formula:Al2SiO3(OH)4
Help on Environment:Environment:Principally in soils derived from volcanic ash.
Help on IMA Status:IMA Status:Approved IMA 1962
Help on Locality:Locality:Imogo soil, Hitoyoshi, Kumamoto Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin:Name Origin:Named for the locality.
Help on Name Pronunciation:Name Pronunciation: Imogolite + PronunciationSay IMOGOLITE
Help on Synonym:Synonym:Grunlingite
 

Imogolite Image

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Imogolite

Imogolite Crystallography

Help on Crystal System:Crystal System:MonoclinicSpace Group: ?
Help on X Ray Diffraction:X Ray Diffraction:By Intensity(I/Io):16(1), 7.9(0.7), 3.3(0.65),
 

Physical Properties of Imogolite

Help on Color:Color:Yellowish white, Light brownish yellow, Blue, Green, Brown.
Help on Density:Density:2.7
Help on Diaphaneity:Diaphaneity:Transparent
Help on Habit:Habit:Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Hardness:Hardness:2-3 - Gypsum-Calcite
Help on Streak:Streak:white
 

Optical Properties of Imogolite

Help on Gladstone-Dale:Gladstone-Dale:CI meas= 0.216 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.1815,KC= 0.2315
Ncalc = 1.63
Help on Optical Data:Optical Data:Isotropic, n=1.47-1.51.
 

Calculated Properties of Imogolite

Help on Electron Density:Electron Density:Bulk Density (Electron Density)=2.73 gm/cc
note: Specific Gravity of Imogolite =2.70 gm/cc.
Help on Fermion Index:Fermion Index:Fermion Index = 0.0068961138
Boson Index = 0.9931038862
Help on Photoelectric:Photoelectric:PEImogolite= 1.38 barns/electron
U=PEImogolite x Electron Density= 3.77 barns/cc.
Help on Radioactivity:Radioactivity:GRapi = 0(Gamma Ray American Petroleum Institute Units)
Imogolite isNot Radioactive
 

Imogolite Classification

Help on Dana Class:Dana Class:71.01.04.03(71)Phyllosilicate Sheets of Six-Membered Rings
 (71.01)with 1:1 layers
 (71.01.04)Allophane group
 
 
 
 
 
Help on Strunz Class:Strunz Class: 09.ED.2009 - SILICATES (Germanates)
 09.E - Phyllosilicates
 09.ED -Phyllosilicates with kaolinite layers
 
 
 
 
 

Other Imogolite Information

Help on References:References:NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)
Help on See Also:See Also:Links to other databases for Imogolite :
1 -Am. Min. Crystal Structure Database
2 -Athena
3 - EUROmin Project
4 -Ecole des Mines de Paris
5 -GeoScienceWorld
6 -Google Images
7 -Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 -Handbook of Mineralogy (UofA)
10 -MinDAT
11 -Mineralienatlas (Deutsch)
12 -Online Mineral Museum
13 -QUT Mineral Atlas
14 -Ruff.Info

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