General Lizardite Information
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Chemical Formula: |
Mg3Si2O5(OH)4 |
Composition: |
Molecular Weight = 277.11 gm |
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Magnesium 26.31 % Mg 43.63 % MgO |
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Silicon 20.27 % Si 43.36 % SiO2 |
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Hydrogen 1.45 % H 13.00 % H2O |
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Oxygen 51.96 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
Mg3Si2O5(OH)4 |
IMA Status: |
Valid Species (Pre-IMA) 1956 |
Locality: |
Link to MinDat.org Location Data. |
Synonym: |
Orthoantigorite |
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Lizardite Image |
Images:
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Lizardite
Comments: Lizardite pseudomorphously replacing olivine.
Location: Snarum, Norway.
Scale: 2x2 cm.
© Dave Barthelmy |
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Lizardite Crystallography
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Axial Ratios: |
a:b:c =0.5769:1:4.6426 |
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 |
Crystal System: |
Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 |
X Ray Diffraction: |
By Intensity(I/Io): 7.12(1), 2.379(0.9), 3.56(0.8), |
Crystal Structure:
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Mellini M , American Mineralogist , 67 (1982) p.587-598, The crystal structure of lizardite 1T: hydrogen bonds and polytypism
View Additional jPOWD Structure files for Lizardite
[1]
[2]
[3]
[4]
[5]
[6]
[7]
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Physical Properties of Lizardite
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Cleavage: |
[001] Perfect |
Color: |
Green, Green blue, Yellow, White. |
Density: |
2.55 - 2.6, Average = 2.57 |
Diaphaniety: |
Translucent |
Hardness: |
2.5 - Finger Nail |
Streak: |
white |
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Optical Properties of Lizardite
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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 |
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. |
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Calculated Properties of Lizardite
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Electron Density: |
relectron=2.60 gm/cc note: rLizardite =2.58 gm/cc. |
Fermion Index |
Fermion Index = 0.03603 Boson Index = 0.96397 |
Photoelectric: |
PELizardite = 1.39 barns/electron U=PELizardite x relectron= 3.62 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Lizardite is Not Radioactive |
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Lizardite Classification
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Dana Class: |
71.1.2b.2 (71)Phyllosilicate Sheets of Six-Membered Rings |
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(71.1)with 1:1 layers |
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(71.1.2b)Serpentine group (Lizardite subgroup) |
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71.1.2b.1 Caryopilite (Mn,Mg,Zn,Fe)3(Si,As)2O510(OH,Cl)4 Cm or C 2/m Mono |
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71.1.2b.2 Lizardite Mg3Si2O5(OH)4 P1 1 |
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71.1.2b.3 Nepouite Ni3Si2O5(OH)4 Ccm21 mm2 |
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71.1.2b.4 Greenalite (Fe,Fe)2-3Si2O5(OH)4 Unk Mono |
Strunz Class: |
VIII/H.27-20 VIII - Silicates |
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VIII/H - Phyllosilicates (layered) Mica like with [Si4O10]4- and related groups |
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VIII/H.27 - Serpentine group |
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VIII/H.27-10 Antigorite (Mg,Fe)3Si2O5(OH)4 Cm m |
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VIII/H.27-20 Lizardite Mg3Si2O5(OH)4 P1 1 |
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VIII/H.27-30 Clinochrysotile Mg3Si2O5(OH)4 Cc, C 2/m Mono |
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VIII/H.27-40 Orthochrysotile Mg3Si2O5(OH)4 Unk Ortho |
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VIII/H.27-50 Parachrysotile Mg3Si2O5(OH)4 Unk Ortho |
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VIII/H.27-55 Caryopilite (Mn,Mg,Zn,Fe)3(Si,As)2O510(OH,Cl)4 Cm or C 2/m Mono |
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VIII/H.27-60 Greenalite (Fe,Fe)2-3Si2O5(OH)4 Unk Mono |
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VIII/H.27-70 Berthierine (Fe,Fe,Al,Mg)2-3(Si,Al)2O5(OH)4 Cm m |
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VIII/H.27-80 Fraipontite (Zn,Al)3(Si,Al)2O5(OH)4 Cm m |
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VIII/H.27-90 Zinalsite Zn2AlSi2O5(OH)4·2(H2O)(?) Mono |
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VIII/H.27-95 Dozyite (Mg7Al2)(Si4Al2)O15(OH)12 Cm m |
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VIII/H.27-100 Amesite Mg2Al(SiAl)O5(OH)4 C1 1 |
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VIII/H.27-110 Kellyite (Mn,Mg,Al)3(Si,Al)2O5(OH)4 P 63 6 |
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VIII/H.27-120 Cronstedtite Fe2Fe(SiFe)O5(OH)4 P 31m 3m |
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VIII/H.27-140 Karpinskite (Mg,Ni)2Si2O5(OH)2(?) Unk Mono |
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VIII/H.27-150 Nepouite Ni3Si2O5(OH)4 Ccm21 mm2 |
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VIII/H.27-160 Pecoraite Ni3Si2O5(OH)4 C 2/m 2/m |
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VIII/H.27-170 Brindleyite (Ni,Mg,Fe)2Al(SiAl)O5(OH)4 C 2 2 |
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VIII/H.27-180 Maufite (Mg,Ni)Al4Si3O13·4(H2O)(?) Mono ? Mono |
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VIII/H.27-190 Carlosturanite (Mg,Fe,Ti,Mn)21(Si,Al)12O28(OH)34 Cm m |
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Other Lizardite Information
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References: |
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
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 - Crocoite.com Mineral Locations
6 - Franklin Minerals(Dunn)
7 -Google Images
8 -Google Scholar
9 -Handbook of Mineralogy (MinSocAm)
10 -Handbook of Mineralogy (UofA)
11 -MinDAT
12 -MinMax(Deutsch)
13 -MinMax(English)
14 - Mineral and Gemstone Kingdom
15 -Mineralienatlas (Deutsch)
16 -QUT Mineral Atlas
17 - University of Manchester - Mineral Structure
18 - WWW-MINCRYST
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Print or Cut-and-Paste your Lizardite Specimen Label here :
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Lizardite
Mg3Si2O5(OH)4
Dana No: 71.1.2b.2 Strunz No: VIII/H.27-20
Locality:
Notes:
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