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In petrology the mineral clinopyroxene is used for temperature and pressure calculations of the magma that produced igneous rock containing this mineral. Clinopyroxene thermobarometry is one of several geothermobarometers. Two things makes this method especially useful; first, clinopyroxene is a common phenocryst in igneous rocks easy to identify, second, the crystallization of the jadeite component of clinopyroxene implies a growth in molar volume being thus a good indicator of pressure. The minerals and liquids involved in clinopyroxene thermobarometry are: *Augite - (Ca,Mg,Fe)SiO3 *Diopside - MgCaSi2O6 *Hedenbergite - CaFeSi2O6 *Jadeite - Na(Al,Fe3+)Si2O6 ==References== *Putirka, Keith; Johnson, Marie; Kinzler, Rosamond; Longhi, John and Walker, David. Thermobarometry of mafic igneous rocks based on clinopyroxene-liquid equilibria, 0-30 kbar. Mineral Petrology 1996. 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Clinopyroxene thermobarometry」の詳細全文を読む スポンサード リンク
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