| 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 - Athena 4 - Google Images 5 - Google Scholar 6 - HyperPhysics 7 - MinDAT 8 - MinMax(Deutsch) 9 - MinMax(English) 10 - Mineral and Gemstone Kingdom 11 - Mineralienatlas (Deutsch) 12 - QUT Mineral Atlas 13 - Ruff.Info Search for Chrysotile using: Visit our Advertisers for Chrysotile : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals The GeoZone Wrights Rock Shop Translate Chrysotile Mineral Data : Ask about Chrysotile here : Print or Cut-and-Paste your Chrysotile Specimen Label here :
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