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Olivine Mineral Data |
General Olivine Information |
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(Mg,Fe)2SiO4 | ||
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Molecular Weight = 153.31 gm | ||
Magnesium 25.37 % Mg 42.06 % MgO | |||
Iron 14.57 % Fe 18.75 % FeO | |||
Silicon 18.32 % Si 39.19 % SiO2 | |||
Oxygen 41.74 % O | |||
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100.00 % 100.00 % = TOTAL OXIDE | |||
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Mg1.6Fe2+0.4(SiO4) | ||
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Basic and ultra basic igneous rocks. Goup species name. | ||
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Not Approved IMA | ||
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Common world wide occurrence. Link to MinDat.org Location Data. | ||
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Named after the green color. | ||
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Olivine ![]() |
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Calcio-olivine - calcium-dominant member of the olivine group | ||
Chrysolite - light yellowish green | |||
Peridot | |||
Olivine Image | |||
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Olivine Crystallography |
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a:b:c =0.4663:1:0.6146 | ||
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a = 4.78, b = 10.25, c = 6.3, Z = 4; V = 308.67 Den(Calc)= 3.30 | ||
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Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbnm | ||
Physical Properties of Olivine |
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{001} Good, {010} Distinct | ||
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Yellowish green, Olive green, Greenish black, Reddish brown. | ||
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3.27 - 3.37, Average = 3.32 | ||
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Transparent to translucent | ||
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Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments. | ||
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Massive - Granular - Common texture observed in granite and other igneous rock. | ||
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6.5-7 - Pyrite-Quartz | ||
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Non-fluorescent. | ||
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Vitreous (Glassy) | ||
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white | ||
Optical Properties of Olivine |
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CI meas= 0.01 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.004 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2,KPDmeas= 0.1988,KC= 0.2009 Ncalc = 1.66 - 1.68 |
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Biaxial (+), a=1.63-1.65, b=1.65-1.67, g=1.67-1.69, bire=0.0400, 2V(Calc)=88, 2V(Meas)=46-98. Dispersion relatively weak. | ||
Calculated Properties of Olivine |
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Bulk Density (Electron Density)=3.25 gm/cc note: Specific Gravity of Olivine =3.30 gm/cc. |
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Fermion Index = 0.03 Boson Index = 0.97 |
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PEOlivine = 5.56 barns/electron U=PEOlivine x rElectron Density= 18.11 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Olivine is Not Radioactive |
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Olivine Classification |
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51.03.01.00 (51)Nesosilicate Insular SiO4 Groups Only | ||
(51.03)with all cations in octahedral [6] coordination | |||
(51.03.01)Olivine group | |||
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09.AC.05 09 - SILICATES (Germanates) | ||
09.A - Nesosilicates | |||
09.AC -Nesosilicates without additional anions; | |||
Other Olivine Information |
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NAME( Duda&Rejl90) PHYS. PROP.(Dana) OPTIC PROP.(Dana) | ||
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Links to other databases for Olivine : 1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Amethyst Galleries' Mineral Gallery 4 - Athena 5 - CalTech Mineral Spectroscopy 6 - GeoScienceWorld 7 - Glendale Community College 8 - Google Images 9 - Google Scholar 10 - HyperPhysics 11 - MinDAT 12 - Mineral and Gemstone Kingdom 13 - Mineralienatlas (Deutsch) 14 - Minerals in Thin Section-University of North Carolina 15 - Minerals in Thin Sections-Humboldt State 16 - Online Mineral Museum 17 - Philatelic Mineralogy 18 - QUT Mineral Atlas 19 - Ruff.Info 20 - Tradeshop.com - The Rainbow of Gems 21 - UCLA - Petrography Thin-Sections 22 - University of Colorado - Mineral Structure Data 23 - University of Texas at Austin 24 - WWW-MINCRYST Search for Olivine using: Visit our Advertisers for Olivine : Ask about Olivine here : Print or Cut-and-Paste your Olivine Specimen Label here :
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