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Gonyerite Mineral Data

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General Gonyerite Information

Help on Chemical  Formula: Chemical Formula: Mn++3[Mn++3Fe+++][(Si,Fe+++)4O10](OH,O)8
Help on Composition: Composition: Molecular Weight = 703.49 gm
   Magnesium  10.36 %  Mg   17.19 % MgO
   Manganese  23.43 %  Mn   30.25 % MnO
   Iron        9.53 %  Fe   13.62 % Fe2O3
   Silicon    15.17 %  Si   32.46 % SiO2
   Hydrogen    0.57 %  H     5.12 % H2O
   Oxygen     40.94 %  O
             ______        ______ 
             100.00 %       98.64 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg3Mn2+3Fe3+Si3.8Fe3+0.2O14(OH)4
Help on Environment: Environment: Veinlets in Mn-rich skarns.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1955
Help on Locality: Locality: Langban, Varmland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Forest A. Gonyer (1899-1971), chemist-analyst and mineralogist, Harvard University.
Help on Name Pronunciation: Name Pronunciation: Gonyerite + Pronunciation Say GONYERITE
 

Gonyerite Image

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  Gonyerite

Comments: Brown massive gonyerite in manganese ore.
Location: Harstigen, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Gonyerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5782:1:3.0443
Help on Cell Dimensions: Cell Dimensions: a = 5.47, b = 9.46, c = 28.8, Z = 4; V = 1,490.29 Den(Calc)= 3.14
Help on Crystal System: Crystal System: Orthorhombic Space Group: pseudo-HEX
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.23(1), 3.61(0.8), 4.79(0.5),
 

Physical Properties of Gonyerite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Dark brown, Brownish black, Bright green.
Help on Density: Density: 3.01
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Flexible - Flexible fragments.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Pearly
Help on Streak: Streak: chocolate brown
 

Optical Properties of Gonyerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.055 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2096,KPDmeas= 0.2186,KC= 0.2218
Ncalc = 1.67 - 1.7
Help on Optical Data: Optical Data: Biaxial (-), a=1.646, b=1.664, g=1.664, bire=0.0180, 2V(Calc)=0, 2V(Meas)=0.
Help on Pleochroism (x): Pleochroism (x): dark brown.
Help on Pleochroism (y): Pleochroism (y): light brown.
Help on Pleochroism (z): Pleochroism (z): light brown.
 

Calculated Properties of Gonyerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.94 gm/cc
note: Specific Gravity of Gonyerite =3.01 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEGonyerite = 9.61 barns/electron
U=PEGonyerite x rElectron Density= 28.24 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gonyerite is Not Radioactive
 

Gonyerite Classification

Help on  Dana Class: Dana Class: 71.04.04.01 (71)Phyllosilicate Sheets of Six-Membered Rings
  (71.04)interlayered 1:1, 2:1, and octahedra
  (71.04.04)Dana Group
 
71.04.04.01 Gonyerite Mn3[Mn3Fe][(Si,Fe)4O10](OH,O)8 pseudo-HEX Ortho
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 Gonyerite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Gonyerite :
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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Gonyerite

Mn++3[Mn++3Fe+++][(Si,Fe+++)4O10](OH,O)8
Dana No: 71.04.04.01 Strunz No: 09.EC.55
Locality:

 

Notes:

 

 
   
 


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