Sudoite Mineral Data

General Sudoite Information

Chemical Formula:

Mg2(Al,Fe+++)3Si3AlO10(OH)8

Composition:

Molecular Weight = 546.77 gm

Magnesium 8.45 % Mg 14.01 % MgO

Aluminum 19.25 % Al 36.36 % Al₂O₃

Iron 3.06 % Fe 1.31 % FeO / 2.92 % Fe₂O₃

Silicon 15.41 % Si 32.97 % SiO₂

Hydrogen 1.46 % H 13.01 % H₂O

Oxygen 52.38 % O

______ ______

100.00 % 100.59 % = TOTAL OXIDE

Empirical Formula:

Mg_1.9Fe²⁺_0.1Al_2.9Fe³⁺_0.2Si₃AlO₁₀(OH)_7.9

Environment:

Disseminated in hematite ore.

IMA Status:

Approved IMA 1962

Locality:

Hanaoka and Kamakita mines, Aonori Prefecture; Japan. Link to MinDat.org Location Data.

Name Origin:

Named for Toshio Sudo (1911-), University of Tokyo, Japan.

Name Pronunciation:

Sudoite

Sudoite Image

Images:

Sudoite Manganite

Comments: Pinkish to nearly white earthy sudoite with dark manganite.
Location: Ilfeld, Nordhausen, Erfurt district, Harz Mts, Thuringia, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Sudoite Crystallography

Axial Ratios:

a:b:c =0.5773:1:1.5749

Cell Dimensions:

a = 5.237, b = 9.07, c = 14.285, Z = 2; beta = 97.02° V = 673.45 Den(Calc)= 2.70

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

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

By Intensity(I/I_o): 2.501(1), 4.52(0.85), 14.2(0.8),

Crystal Structure:

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Eggleton R A , Bailey S W , American Mineralogist , 52 (1967) p.673-689, Structural aspects of dioctahedral chlorite

Physical Properties of Sudoite

Cleavage:

{100} Perfect

Color:

White.

Density:

2.63 - 2.68, Average = 2.65

Diaphaneity:

Translucent

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

2.5-3.5 - Finger Nail-Copper Penny

Luster:

Pearly

Streak:

white

Optical Properties of Sudoite

Gladstone-Dale:

CI meas= 0.027 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.044 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2178,KPDmeas= 0.2215,KC= 0.2278
Ncalc = 1.6 - 1.61

Optical Data:

Biaxial (-), a=1.581-1.583, b=1.584-1.589, g=1.591-1.601, bire=0.0100-0.0180, 2V(Calc)=68-72, 2V(Meas)=64-70.

Calculated Properties of Sudoite

Electron Density:

Bulk Density (Electron Density)=2.66 gm/cc
note: Specific Gravity of Sudoite =2.66 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Sudoite= 2.26 barns/electron
U=PE_Sudoite x rElectron Density= 6.02 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sudoite is Not Radioactive

Sudoite Classification

Dana Class:

71.04.01.03 (71)Phyllosilicate Sheets of Six-Membered Rings

(71.04)interlayered 1:1, 2:1, and octahedra

(71.04.01)Chlorite group (Tri-Dioctahedral)

71.04.01.01 Donbassite Al2[Al2.33][Si3AlO10](OH)8 C 2/m 2/m

71.04.01.02 Cookeite LiAl4(Si3Al)O10(OH)8 P 2₁/a 2/m

71.04.01.03 Sudoite Mg2(Al,Fe)3Si3AlO10(OH)8 C 2/m 2/m

71.04.01.04 Clinochlore (Mg,Fe)5Al(Si3Al)O10(OH)8 C 2/m 2/m

71.04.01.05 Nimite (Ni,Mg,Fe)5Al(Si3Al)O10(OH)8 C 2/m 2/m

71.04.01.06 Baileychlore (Zn,Al,[])3[Fe2Al][Si3AlO10](OH)8 C1,C1 Tri

71.04.01.07 Chamosite (Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8 C 2/m 2/m

71.04.01.08 Pennantite Mn5Al(Si3Al)O10(OH)8 C 2/m 2/m

71.04.01.09 Orthochamosite! (Fe,Mg,Fe)5Al(Si3Al)O10(OH,O)8 C3m-pseudoHEX Ortho

71.04.01.10 Borocookeite! Li(13x)Al(4-x)(BSi3)O10(OH,F)8[x=0-0.33] pseudo C 2/m 2/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 Sudoite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(AntBidBlaNic2)

See Also:

Links to other databases for Sudoite :
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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Print or Cut-and-Paste your Sudoite Specimen Label here :

Sudoite

Mg2(Al,Fe+++)3Si3AlO10(OH)8
Dana No: 71.04.01.03 Strunz No: 09.EC.55
Locality:

Notes: