Mineralogy Database

Nimite Mineral Data

Search Webmineral :
  
Advertisment

General Nimite Information

Help on Chemical  Formula: Chemical Formula: (Ni,Mg,Fe++)5Al(Si3Al)O10(OH)8
Help on Composition: Composition: Molecular Weight = 666.98 gm
   Magnesium   6.19 %  Mg   10.27 % MgO
   Aluminum    8.09 %  Al   15.29 % Al2O3
   Iron        5.86 %  Fe    3.23 % FeO /  4.79 % Fe2O3
   Silicon    12.63 %  Si   27.03 % SiO2
   Nickel     22.88 %  Ni   29.12 % NiO
   Hydrogen    1.16 %  H    10.40 % H2O
   Oxygen     43.18 %  O
             ______        ______ 
             100.00 %      100.12 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni2.6Mg1.7AlFe3+0.4Fe2+0.3Si3AlO10.3(OH)7.7
Help on Environment: Environment: In a small tabular body of nickeliferous serpentinite, probably a contact deposit, along the junction of quartzite and an ultramafic intrusive.
Help on IMA Status: IMA Status: Approved IMA 1968
Help on Locality: Locality: From three km west of the Scotia talc mine, Bon Accord area, Barberton, Transvaal, South Africa. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: An acronym for the National Institute of Metallurgy of South Africa.
Help on Name Pronunciation: Name Pronunciation: Nimite Say NIMITE
 

Nimite Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image

  Nimite

Comments: Dark green nimite aggregates on white calcite.
Location: Planalto, Rio Grande do Sol, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Nimite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5773:1:1.5522
Help on Cell Dimensions: Cell Dimensions: a = 5.32, b = 9.214, c = 14.302, Z = 2; beta = 97.1° V = 695.69 Den(Calc)= 3.18
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.1(1), 3.55(0.45), 14.2(0.25),
 

Physical Properties of Nimite

Help on Cleavage: Cleavage: {001} Distinct
Help on Color: Color: Yellow green.
Help on Density: Density: 3.19 - 3.23, Average = 3.21
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Habit: Habit: Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Pearly
Help on Streak: Streak: white
 

Optical Properties of Nimite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.072 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.064 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2024,KPDmeas= 0.2005,KC= 0.2162
Ncalc = 1.69 - 1.7
Help on Optical Data: Optical Data: Biaxial (-), a=1.637, b=1.647, g=1.647, bire=0.0100, 2V(Calc)=0, 2V(Meas)=15.
Help on Pleochroism (x): Pleochroism (x): yellow green.
Help on Pleochroism (y): Pleochroism (y): apple green.
Help on Pleochroism (z): Pleochroism (z): apple green.
 

Calculated Properties of Nimite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.16 gm/cc
note: Specific Gravity of Nimite =3.18 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PENimite = 11.55 barns/electron
U=PENimite x rElectron Density= 36.48 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Nimite is Not Radioactive
 

Nimite Classification

Help on  Dana Class: Dana Class: 71.04.01.05 (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 Nimite Information

Help on References: References: NAME( AntBidBlaNic2) PHYS. PROP.(Larousse des Mineraux,1981) OPTIC PROP.(AntBidBlaNic2)
Help on See Also: See Also: Links to other databases for Nimite :
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

Search for Nimite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Nimite :

Ask about Nimite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Nimite Specimen Label here :

Nimite

(Ni,Mg,Fe++)5Al(Si3Al)O10(OH)8
Dana No: 71.04.01.05 Strunz No: 09.EC.55
Locality:

 

Notes:

 

 
   
 


Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.