| Chrysotile Mineral Data |
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- 71.1.2d.0 Chrysotile ! Mg3Si2O5(OH)4 A2/m 2/m
- 71.1.2d.1 Clinochrysotile Mg3Si2O5(OH)4 Cc, C 2/m Mono
- 71.1.2d.2 Orthochrysotile Mg3Si2O5(OH)4 Unk Ortho
- 71.1.2d.3 Parachrysotile Mg3Si2O5(OH)4 Unk Ortho
- 71.1.2d.4 Pecoraite Ni3Si2O5(OH)4 C 2/m 2/m
General Chrysotile Information |
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 Chemical Formula: |
Mg3Si2O5(OH)4 | ||
| 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 | |||
| Empirical Formula: |
Mg3(Si2O5)(OH)4 | ||
| Environment: |
Chrysotile is used as a group name in 1956 for clinochrysotile and orthochrysotile. | ||
| IMA Status: |
Not Approved IMA 1956 (Dana # Added) | ||
| Locality: |
Link to MinDat.org Location Data. | ||
| Name Origin: |
Named in 1834 from the Greek chrysos - "gold" and tilos - "fiber." | ||
| Synonym: |
Asbestos | ||
Chrysotile Image | |||
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Images:
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Chrysotile Crystallography |
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| Axial Ratios: |
a:b:c =0.5825:1:1.6049 | ||
| Cell Dimensions: |
a = 5.313, b = 9.12, c = 14.637, Z = 4; beta = 93.167° V = 708.15 Den(Calc)= 2.60 | ||
| Crystal System: |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: A2/m | ||
| X Ray Diffraction: |
By Intensity(I/Io): 7.32(1), 3.65(0.7), 4.57(0.5), | ||
Physical Properties of Chrysotile |
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| Color: |
Green. | ||
| Density: |
2.53 | ||
| Diaphaniety: |
Translucent | ||
| Habit: |
Acicular - Occurs as needle-like crystals. | ||
| Hardness: |
2.5 - Finger Nail | ||
| Luster: |
Silky | ||
| Streak: |
white | ||
Optical Properties of Chrysotile |
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| Gladstone-Dale: |
CI meas= -0.015 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.219,KPDmeas= 0.2251,KC= 0.2217 |
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| Optical Data: |
Biaxial (?), a=1.569, g=1.57, bire=0.0010 | ||
Calculated Properties of Chrysotile |
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| Electron Density: |
relectron=2.63 gm/cc |
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| Fermion Index |
Fermion Index = 0.03603 Boson Index = 0.96397 |
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| Photoelectric: |
PEChrysotile = 1.39 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Chrysotile is Not Radioactive |
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Chrysotile Classification |
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| Dana Class: |
71.1.2d.0 (71)Phyllosilicate Sheets of Six-Membered Rings | ||
| (71.1)with 1:1 layers | |||
| (71.1.2d)Serpentine group (Chrysotile subgroup) | |||
| Strunz Class: |
VIII/H.27-00 VIII - Silicates | ||
| VIII/H - Phyllosilicates (layered) Mica like with [Si4O10]4- and related groups | |||
| VIII/H.27 - Serpentine group | |||
Other Chrysotile 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 Chrysotile : 1 -Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Applied Mineralogy 4 -Athena 5 - Crocoite.com Mineral Locations 6 -Google Images 7 -Google Scholar 8 - HyperPhysics 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 - Mineral and Gemstone Kingdom 13 -Mineralienatlas (Deutsch) 14 -QUT Mineral Atlas Search for Chrysotile using: Visit our Advertisers for Chrysotile : Translate Chrysotile Mineral Data : Ask about Chrysotile here : Print or Cut-and-Paste your Chrysotile Specimen Label here :
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