Mineralogy Database

Lizardite Mineral Data

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General Lizardite Information

Help on Chemical  Formula: Chemical Formula: Mg3Si2O5(OH)4
Help on Composition: Composition: Molecular Weight = 277.11 gm
   Magnesium  26.31 %  Mg   43.63 % MgO
   Silicon    20.27 %  Si   43.36 % SiO2
   Hydrogen    1.45 %  H    13.00 % H2O
   Oxygen     51.96 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg3Si2O5(OH)4
Help on Environment: Environment: Serpentinization alteration of Mg silicates below 75 deg. C.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1956
Help on Locality: Locality: Kennack Cove, The Lizard, Cornwall, England. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Lizardite + Pronunciation Say LIZARDITE
Help on Synonym: Synonym: Maufite - Interstratified clinochlore-lizardite
  Orthoantigorite
 

Lizardite Image

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  Lizardite

Comments: Lizardite pseudomorphously replacing olivine.
Location: Snarum, Norway. Scale: 2x2 cm.
© Dave Barthelmy

Lizardite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5769:1:4.6426
Help on Cell Dimensions: Cell Dimensions: a = 5.308, b = 9.2, c = 42.712, Z = 12; alpha = 90°, beta = 90°, gamma = 90° V = 2,085.78 Den(Calc)= 2.65
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.12(1), 2.379(0.9), 3.56(0.8),
 

Physical Properties of Lizardite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Green, Green blue, Yellow, White.
Help on Density: Density: 2.55 - 2.6, Average = 2.57
Help on Diaphaneity: Diaphaneity: Translucent
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Streak: Streak: white
 

Optical Properties of Lizardite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.021 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.048 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.211,KPDmeas= 0.2171,KC= 0.2217
Ncalc = 1.57 - 1.59
Help on Optical Data: Optical Data: Biaxial (-), a=1.541-1.5625, b=1.565, g=1.553-1.568, bire=0.0055-0.0120, 2V(Meas)=37-61.
 

Calculated Properties of Lizardite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.60 gm/cc
note: Specific Gravity of Lizardite =2.58 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PELizardite = 1.39 barns/electron
U=PELizardite x rElectron Density= 3.62 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lizardite is Not Radioactive
 

Lizardite Classification

Help on  Dana Class: Dana Class: 71.01.02b.02 (71)Phyllosilicate Sheets of Six-Membered Rings
  (71.01)with 1:1 layers
  (71.01.02b)Serpentine group (Lizardite subgroup)
 
71.01.02b.01 Caryopilite (Mn,Mg,Zn,Fe)3(Si,As)2O510(OH,Cl)4 Cm or C 2/m Mono
 
71.01.02b.02 Lizardite Mg3Si2O5(OH)4 P1 1
 
71.01.02b.03 Nepouite Ni3Si2O5(OH)4 Ccm21 mm2
 
71.01.02b.04 Greenalite (Fe,Fe)2-3Si2O5(OH)4 Unk Mono
Help on  Strunz Class: Strunz Class: 09.ED.15 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.ED -Phyllosilicates with kaolinite layers
 
09.ED.15 Clinochrysotile? Mg3Si2O5(OH)4 Cc, C 2/m Mono
 
09.ED.15 Berthierine (Fe,Fe,Al,Mg)2-3(Si,Al)2O5(OH)4 Cm m
 
09.ED.15 Brindleyite (Ni,Mg,Fe)2Al(SiAl)O5(OH)4 C 2 2
 
09.ED.15 Amesite Mg2Al(SiAl)O5(OH)4 C1 1
 
09.ED.15 Antigorite (Mg,Fe)3Si2O5(OH)4 Cm m
 
09.ED.15 Caryopilite (Mn,Mg,Zn,Fe)3(Si,As)2O510(OH,Cl)4 Cm or C 2/m Mono
 
09.ED.15 Fraipontite (Zn,Al)3(Si,Al)2O5(OH)4 Cm m
 
09.ED.15 Cronstedtite Fe2Fe(SiFe)O5(OH)4 P 31m 3m
 
09.ED.15 Chrysotile Mg3Si2O5(OH)4 A2/m 2/m
 
09.ED.15 Nepouite Ni3Si2O5(OH)4 Ccm21 mm2
 
09.ED.15 Greenalite (Fe,Fe)2-3Si2O5(OH)4 Unk Mono
 
09.ED.15 Kellyite (Mn,Mg,Al)3(Si,Al)2O5(OH)4 P 63 6
 
09.ED.15 Maufite? (Mg,Ni)Al4Si3O13•4(H2O)(?) Mono ? Mono
 
09.ED.15 Lizardite Mg3Si2O5(OH)4 P1 1
 
09.ED.15 Orthochrysotile? Mg3Si2O5(OH)4 Unk Ortho
 
09.ED.15 Manandonite Li2Al4[(Si2AlB)O10](OH)8 C1 1
 
09.ED.15 Pecoraite Ni3Si2O5(OH)4 C 2/m 2/m
 
09.ED.15 Parachrysotile? Mg3Si2O5(OH)4 Unk Ortho
 

Other Lizardite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Lizardite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - Franklin Minerals(Dunn)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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

Lizardite

Mg3Si2O5(OH)4
Dana No: 71.01.02b.02 Strunz No: 09.ED.15
Locality:

 

Notes:

 

 
   
 


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