General Orthochrysotile Information![]() Mg3Si2O5(OH)4 |
![]() 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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100.00 % 100.00 % = TOTAL OXIDE |
![]() Mg3Si2O5(OH)4 |
![]() Metamorphosed and hydrothermally-altered ultra-basic rocks. Orthochrysotile (1951) is now regarded as polytype of chrysotile. |
![]() Discredited IMA 2006 - Valid Species (Pre-IMA) 1951 |
![]() Link to MinDat.org Location Data. |
![]() From the orthorhombic crystal symmetry and Greek chrysos - "gold" and tilos - "fiber." |
![]() Orthochrysotile + Pronunciation |
![]() ![]() Asbestos |
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Chrysotile |
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Mitaxite - splintery |
| | Orthochrysotile Image
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Orthochrysotile Crystallography![]() a:b:c =0.5772:1:1.5351 |
![]() a = 5.34, b = 9.25, c = 14.2, Z = 4; V = 701.41 Den(Calc)= 2.62 |
![]() OrthorhombicSpace Group: Unk |
![]() By Intensity(I/Io): 7.1(1), 2.33(0.8), 3.55(0.7),2.5(0.5), 4.4(0.4), 1.615(0.3), 3.88(0.3), 4.63(0.2), |
| Physical Properties of Orthochrysotile![]() {???} Distinct |
![]() Brownish, Colorless, Green, Gray, Gray brown. |
![]() 2.53 - 2.65, Average = 2.59 |
![]() Translucent to opaque |
![]() Fibrous - Thin, elongated fractures produced by crystal forms or intersecting cleavages (e.g. asbestos). |
![]() Amorphous - No crystalline form or imitative shape. |
![]() Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
![]() Massive - Fibrous - Distinctly fibrous fine-grained forms. |
![]() 2.5-3 - Finger Nail-Calcite |
![]() Non-fluorescent. |
![]() Silky |
![]() white |
| Optical Properties of Orthochrysotile![]() CI meas= 0.027 (Excellent) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.038 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2133,KPDmeas= 0.2158,KC= 0.2217 Ncalc = 1.56 - 1.59 ![]() Biaxial (-), a=1.545-1.569, b=1.546-1.569, g=1.553-1.571, bire=0.0020-0.0080, 2V(Calc)=0-42, 2V(Meas)=20-60. Dispersion relatively weak. |
| Calculated Properties of Orthochrysotile![]() Bulk Density (Electron Density)=2.62 gm/cc |
note: Specific Gravity of Orthochrysotile =2.59 gm/cc. ![]() Fermion Index = 0.03 |
Boson Index = 0.97 ![]() PEOrthochrysotile = 1.39 barns/electron |
U=PEOrthochrysotile x rElectron Density= 3.64 barns/cc. ![]() GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Orthochrysotile is Not Radioactive | Orthochrysotile Classification![]() 71.01.02d.02 (71)Phyllosilicate Sheets of Six-Membered Rings |
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(71.01)with 1:1 layers |
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(71.01.02d)Serpentine group (Chrysotile subgroup) |
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![]() 09.ED.15 09 - SILICATES (Germanates) |
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09.E - Phyllosilicates |
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09.ED -Phyllosilicates with kaolinite layers |
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| Other Orthochrysotile Information![]() NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) |
![]() Links to other databases for Orthochrysotile : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 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 Search for Orthochrysotile using: Visit our Advertisers for Orthochrysotile : A Bijoux Google Search for OrthochrysotileAdam's Minerals Google Search for Orthochrysotile Cape Minerals Google Search for Orthochrysotile Dakota Matrix Minerals Google Search for Orthochrysotile Excalibur Mineral Corp. Google Search for Orthochrysotile Exceptional Minerals Google Search for Orthochrysotile John Betts Fine Minerals Search for Orthochrysotile McDougall Minerals Google Search for Orthochrysotile Mineral News Website Link Rock and Mineral Shows Google Search for Orthochrysotile Weinrich Minerals, Inc. Google Search for Orthochrysotile Ask about Orthochrysotile here : Print or Cut-and-Paste your Orthochrysotile Specimen Label here :
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