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Clinochlore Mineral Data

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General Clinochlore Information

Help on Chemical  Formula: Chemical Formula: (Mg,Fe++)5Al(Si3Al)O10(OH)8
Help on Composition: Composition: Molecular Weight = 595.22 gm
   Magnesium  15.31 %  Mg   25.39 % MgO
   Aluminum    9.07 %  Al   17.13 % Al2O3
   Iron       11.73 %  Fe   15.09 % FeO
   Silicon    14.16 %  Si   30.28 % SiO2
   Hydrogen    1.35 %  H    12.11 % H2O
   Oxygen     48.38 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg3.75Fe2+1.25Si3Al2O10(OH)8
Help on Environment: Environment: Contact, hydrothermal, and regional metamorphism of mafic minerals.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1851
Help on Locality: Locality: Common world wide. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Clinochlore from the Greek klino - "oblique" and chloros - " green." Ripidolite from the Greek rhipis - "fan" and lithos - "stone." Pennine from the Pennine Alps, Italy
Help on Name Pronunciation: Name Pronunciation: Clinochlore + Pronunciation Say CLINOCHLORE
Help on Synonym: Synonym: Colerainite
  Kammererite - Red
  Maufite - interstratified clinochlore-lizardite
  Pennine
  Prochlorite
  Ripidolite
  Sheridanite
 

Clinochlore Image

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  Andradite   Clinochlore

Comments: Transparent topazolite, the yellow variety of andradite on clinochlore.
Location: Yellow Cat Mine, New Idria District, San Benito County. California, USA. Scale: 2.7 x 2.5 cm.
© Fabre Minerals

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  Clinochlore

Comments: Purple clinochlore (Kammererite) crystal cluster.
Location: Kop Daglari, Turkey. Scale: 1.4 cm across.
© John Veevaert

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  Perovskite   Clinochlore

Comments: Square, opaque perovskite on green clinochlore. Very brilliant and with large crystals (2 x 1.5 cm.).
Location: Ilmen Mountains. Chelyabinsk, Urals, Russia. Scale: 6 x 4.5 cm.
© Fabre Minerals

Clinochlore Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5698:1:1.5376
Help on Cell Dimensions: Cell Dimensions: a = 5.3, b = 9.3, c = 14.3, Z = 2; beta = 97° V = 699.59 Den(Calc)= 2.83
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): 7.16(1), 4.77(0.7), 3.58(0.6),
 

Physical Properties of Clinochlore

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Blackish green, Bluish green, White, Yellowish green, Olive green.
Help on Density: Density: 2.55 - 2.75, Average = 2.65
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Massive - Fibrous - Distinctly fibrous fine-grained forms.
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Hardness: Hardness: 2-2.5 - Gypsum-Finger Nail
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Clinochlore

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.005 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.059 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2058,KPDmeas= 0.2197,KC= 0.2188
Ncalc = 1.56 - 1.62
Help on Optical Data: Optical Data: Biaxial (+), a=1.571-1.588, b=1.571-1.589, g=1.576-1.599, bire=0.0050-0.0110, 2V(Calc)=0-36, 2V(Meas)=0-40. Dispersion r < v.
Help on Pleochroism (x): Pleochroism (x): pale green, pale green, or colorless.
Help on Pleochroism (y): Pleochroism (y): pale green, pale green, or colorless.
 

Calculated Properties of Clinochlore

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.65 gm/cc
note: Specific Gravity of Clinochlore =2.65 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEClinochlore = 4.59 barns/electron
U=PEClinochlore x rElectron Density= 12.16 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Clinochlore is Not Radioactive
 

Clinochlore Classification

Help on  Dana Class: Dana Class: 71.04.01.04 (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 Clinochlore Information

Help on See Also: See Also: Links to other databases for Clinochlore :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - Franklin Minerals(Dunn)
9 - GeoScienceWorld
10 - Google Images
11 - Google Scholar
12 - Handbook of Mineralogy (MinSocAm)
13 - Handbook of Mineralogy (UofA)
14 - MinDAT
15 - Mineral and Gemstone Kingdom
16 - Mineralienatlas (Deutsch)
17 - Online Mineral Museum
18 - QUT Mineral Atlas
19 - Ruff.Info
20 - WWW-MINCRYST

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

Clinochlore

(Mg,Fe++)5Al(Si3Al)O10(OH)8
Dana No: 71.04.01.04 Strunz No: 09.EC.55
Locality:

 

Notes:

 

 


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