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Orthopyroxene Subgroup
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Ferrosilite
Rollinsons quarry, Malmsbury, Victoria, Australia
© Pat Sutton
| Pyroxene Group | |||
A subgroup name for orthorhombic Pyroxene Group minerals.
Compare Clinopyroxene Subgroup.
The most common member in rocks is enstatite.
Classification of Orthopyroxene Subgroup | ||||||||||||||||||||||||||||||
| mindat.org URL: | http://www.mindat.org/min-10967.html Please feel free to link to this page. | |||||||||||||||||||||||||||||
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Relationship of Orthopyroxene Subgroup to other Species | ||||||||||||||||||||||||||||||
| Member of: | Pyroxene Group | |||||||||||||||||||||||||||||
| Other Members of Group: - + | ||||||||||||||||||||||||||||||
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Other Names for Orthopyroxene Subgroup | ||||||||||||||||||||||||||||||
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Other Information | ||||||||||||||||||||||||||||||
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. | |||||||||||||||||||||||||||||
References for Orthopyroxene Subgroup | ||||||||||||||||||||||||||||||
| Reference List: - + | Chatillon-Colinet, C., Newton, R.C., Perkins, D., III, and Kleppa, O.J. (1983) Thermochemistry of (Fe 3+,Mg)SiO3 orthopyroxene. Geochimica et Cosmochimica Acta: 47: 1597-1603. Morimoto, N. (1988): Nomenclature of Pyroxenes. Am. Mineral. 73, 1123-1133. Domeneghetti, M.C. and Steffen, G. (1992) M1, M2 site populations and distortion parameters in synthetic Mg-Fe orthopyroxenes from Mössbauer spectra and X-ray structure refinements. Physics and Chemistry of Minerals: 19: 298-306. Skogby, H., Annersten, H., Domeneghetti, M.C., Molin, G.M., and Tazzoli V. (1992) Iron distribution in orthopyroxene: a comparison of Mössbauer spectra and X-ray refinement results. European Journal of Mineralogy: 4: 441-452. Carpenter, M.A. and Salje, E.K.H. (1994a), Thermodynamics of nonconvergent cation ordering in minerals: II. Spinels and the orthopyroxene solid solution. American Mineralogist: 79: 1068-1083. Ganguly, J., Yang, H.X., and Ghose, S. (1994) Thermal history of mesosiderites: Quantitative constraints from compositional zoning and Fe-Mg ordering in orthopyroxenes. Geochimica et Cosmochimica Acta: 58: 2711-2723. Yang, H. and Ghose, S. (1994) in situ Fe-Mg order-disorder studies and thermodynamic properties of orthopyroxene (Fe,Mg)2Si2O6. American Mineralogist: 79: 633-643. Domeneghetti, M.C., Molin, G.M., and Tazzli, V. (1995a) A crystal-chemical model for Pbca orthopyroxenes. American Mineralogist: 80: 253-267. Domeneghetti, M.C., Molin, G.M., Stimpfl, M., and Tribaudino, M. (1995b) Orthopyroxene from Serra de Mage' meteorite: structure refinement and estimation of C2/c pyroxene contributions to apparent Pbca diffraction violations. American Mineralogist: 80: 923-929. Yang, H. and Ghose, S. (1995b) A transitional structural state and anomalous Fe-Mg order-disorder in Mg-rich orthopyroxene, (Mg0.75Fe0.25)Si2O6. American Mineralogist: 80: 9-20. Chai, M., Brown, M., and Slutsky, L.J. (1997) The elastic constants of an aluminous orthopyroxene to 12.5 GPa. Journal of Geophysical Research: 102: 14779-14789. Hugh-Jones, D.A. (1997) Thermal expansion of MSiO3 and FeSiO3 ortho- and clinopyroxenes. American Mineralogist: 82: 689-696. Hugh-Jones, .A., Chopelas, A., and Angel, R.J. (1997) Tetrahedral compression in (Mg,Fe)SiO3 orthopyroxenes. Physics and Chemistry of Minerals: 24: 301-310. Zema, M., Domeneghetti, M.C., Molin, G.M., and Tazzoli, V. (1997) Coling rates of diogenites: astudy of Fe 3+-Mg ordering in orthopyroxene by single-crystalX-ray diffraction. Meteoritics and Planetary Science Letters: 32: 855-862. Stimpfl, M., Ganguly, J., and Molin, G.M. (1999) Fe 2+-Mg order-disorder in orthopyroxene: equilibrium fractionation between octahedral sites and thermodynamic analysis. Contributions to Mineralogy and Petrology: 136: 297-309. Zema, M., Domeneghetti, M.C., and Tazzoli, V. (1999) Order-disorder inetics in orthpyroxene with exsolution products. American Mineralogist: 84: 1895-1901. Domeneghetti, M.C., Molin, G.M., Triscari, M., and Zema, M. (2000) Orthopyroxenes as a geospeedometer: thermal history of Kapoeta, Old Homestead 001 and Hughes 004 howardites. Meteoritics and Planetary Science: 35: 347-354. Ganguly, J. and Stimpfl, M. (2000) Cation ordering in orthopyroxenes from two stony-iron meteorites: Implications for cooling rates and metal-silicate mixing. Geochimica et Cosmochimica Acta: 64: 1292-1297. Nestola, F. and Tribaudino, M. (2003) The structure of Pbca orthopyroxenes along the join diopside-enstatite (CaMgSi2O6-Mg2Si2O6). European Journal of Mineralogy: 15: 365-371. Zema, M., Tarantino, S.C., Domeneghetti, M.C., and Tazzoli, V. (2003) Ca in orthopyroxene: structural variations and kinetics of the disordering process. European Journal of Mineralogy: 15: 373-380. Kung, J., Li, B.S., Uchida, T., Wang, Y.B., Neuville, D., and Liebermann, R.C. (2004) In situ measurements of sound velocities and densities across the orthopyroxene - high-pressure clinopyroxene transition in MgSiO3 at high-pressure. Physics of the Earth and Planetary Interiors: 147: 27-44. | |||||||||||||||||||||||||||||
Internet Links for Orthopyroxene Subgroup | ||||||||||||||||||||||||||||||
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Localities for Orthopyroxene Subgroup | ||||||||||||||||||||||||||||||
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The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the
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