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Orthochamosite Mineral Data

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General Orthochamosite Information

Help on Chemical  Formula: Chemical Formula: (Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8
Help on Composition: Composition: Molecular Weight = 664.18 gm
   Magnesium   5.49 %  Mg    9.10 % MgO
   Aluminum    8.12 %  Al   15.35 % Al2O3
   Iron       29.43 %  Fe   32.45 % FeO /  6.01 % Fe2O3
   Silicon    12.69 %  Si   27.14 % SiO2
   Hydrogen    0.91 %  H     8.14 % H2O
   Oxygen     43.36 %  O
             ______        ______ 
             100.00 %       98.19 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+3Mg1.5Fe3+0.5Al2Si3O12(OH)6
Help on Environment: Environment: In a lateritic clay derived from the alteration of olivine basalts (Ayrshire, Scotland).
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1957 (Dana # Added)
Help on Locality: Locality: Kank, Kutna Hora, Stredocesky kraj, Cechy (Bohemia), Czech Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the orthorhombic analogue of chamosite.
Help on Name Pronunciation: Name Pronunciation: Orthochamosite + Pronunciation Say ORTHOCHAMOSITE
 

Orthochamosite Image

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  Orthochamosite

Comments: Pale green micaceous orthochamosite in quartz.
Location: Near Manggruvan, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Orthochamosite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5762:1:0.7578
Help on Cell Dimensions: Cell Dimensions: a = 5.355, b = 9.293, c = 7.043, Z = 1; V = 350.49 Den(Calc)= 3.15
Help on Crystal System: Crystal System: Orthorhombic Space Group: C3m-pseudoHEX
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.513(1), 7.04(1), 2.514(0.9),1.552(0.7), 2.137(0.6), 1.765(0.4), 2.673(0.4),
 

Physical Properties of Orthochamosite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Green, Greenish gray.
Help on Density: Density: 3.1 - 3.15, Average = 3.12
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Micaceous - Fracture of flexable micaceous cleavage fragments.
Help on Habit: Habit: Massive - Lamellar - Distinctly foliated fine-grained forms.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Pearly
Help on Streak: Streak: greenish white
 

Optical Properties of Orthochamosite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.068 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.075 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1979,KPDmeas= 0.1995,KC= 0.214
Ncalc = 1.66 - 1.67
Help on Optical Data: Optical Data: Biaxial (-), a=1.6, b=1.6, g=1.67, bire=0.0700, 2V(Calc)=0, 2V(Meas)=0-15.
 

Calculated Properties of Orthochamosite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.08 gm/cc
note: Specific Gravity of Orthochamosite =3.13 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEOrthochamosite = 9.57 barns/electron
U=PEOrthochamosite x rElectron Density= 29.45 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Orthochamosite is Not Radioactive
 

Orthochamosite Classification

Help on  Dana Class: Dana Class: 71.04.01.09 (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
Help on  Strunz Class: 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 Orthochamosite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(AntBidBlaNic2) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Orthochamosite :
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 Orthochamosite Specimen Label here :

Orthochamosite

(Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8
Dana No: 71.04.01.09 Strunz No: 09.EC.55
Locality:

 

Notes:

 

 
   
 


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