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Chromian spinels as petrogenetic indicators; thermodynamics and petrological applications

A model is developed for the thermodynamic properties of chromian spinels of petrological interest. The model is internally consistent with the thermodynamic data of Berman. A geothermometer based on exchange of Fe and Mg between olivine and spinel is developed which may be applied with confidence t...

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Published in:	The American mineralogist 1991-06, Vol.76 (5-6), p.827-847
Main Authors:	Sack, Richard O, Ghiorso, Mark S
Format:	Article
Language:	English
Subjects:	chrome spinel Condensed matter: structure, mechanical and thermal properties Exact sciences and technology geochemistry geologic thermometry igneous and metamorphic rocks metamorphic rocks metamorphism mineral assemblages Mineralogy minerals nonsilicates oxides P-T conditions Petrology phase equilibria Physics properties Structure of solids and liquids crystallography theoretical studies thermodynamic properties
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container_issue	5-6
container_start_page	827
container_title	The American mineralogist
container_volume	76
creator	Sack, Richard O Ghiorso, Mark S
description	A model is developed for the thermodynamic properties of chromian spinels of petrological interest. The model is internally consistent with the thermodynamic data of Berman. A geothermometer based on exchange of Fe and Mg between olivine and spinel is developed which may be applied with confidence to assemblages formed at low P and at T 400-1400 degrees C. Phase relations within the spinel prism [(Fe,Mg)(Al,Cr,Fe3+)2O4] are calculated for T over the range 500-600 degrees C and compare favourably with petrological observations.
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The model is internally consistent with the thermodynamic data of Berman. A geothermometer based on exchange of Fe and Mg between olivine and spinel is developed which may be applied with confidence to assemblages formed at low P and at T 400-1400 degrees C. 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The model is internally consistent with the thermodynamic data of Berman. A geothermometer based on exchange of Fe and Mg between olivine and spinel is developed which may be applied with confidence to assemblages formed at low P and at T 400-1400 degrees C. Phase relations within the spinel prism [(Fe,Mg)(Al,Cr,Fe3+)2O4] are calculated for T over the range 500-600 degrees C and compare favourably with petrological observations.</description><subject>chrome spinel</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Exact sciences and technology</subject><subject>geochemistry</subject><subject>geologic thermometry</subject><subject>igneous and metamorphic rocks</subject><subject>metamorphic rocks</subject><subject>metamorphism</subject><subject>mineral assemblages</subject><subject>Mineralogy</subject><subject>minerals</subject><subject>nonsilicates</subject><subject>oxides</subject><subject>P-T conditions</subject><subject>Petrology</subject><subject>phase equilibria</subject><subject>Physics</subject><subject>properties</subject><subject>Structure of solids and liquids; crystallography</subject><subject>theoretical studies</subject><subject>thermodynamic properties</subject><issn>0003-004X</issn><issn>1945-3027</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1991</creationdate><recordtype>article</recordtype><recordid>eNotzs1KAzEUBeAgCtbqO8zCnQzcTG4yDa6k-AcFNwq6Gm6TTJsykwzJiPTtjdTVOYuPwzljC65R1gKa9pwtAEDUAPh5ya5yPgA0jZB6wb7W-xRHT6HKkw9uyBXlanJzijsX3OxN5YP1huaY8n01710aoz0GGr0pNNiTHeKumKGiaRr-sI8hX7OLnobsbv5zyT6eHt_XL_Xm7fl1_bCpqUE-16gUckVWtNpslVYrTWhRtY0EIw2RQmVAbo2VhD1yrXElS-Wq6Y1WHMSS3Z52J8rlQ58oGJ-7KfmR0rFDAS3IVWF3J7ZzMRvvgnE_MQ22O8TvFMrBrmzzDlBhi-IXhT1foQ</recordid><startdate>199106</startdate><enddate>199106</enddate><creator>Sack, Richard O</creator><creator>Ghiorso, Mark S</creator><general>Mineralogical Society of America</general><scope>IQODW</scope></search><sort><creationdate>199106</creationdate><title>Chromian spinels as petrogenetic indicators; thermodynamics and petrological applications</title><author>Sack, Richard O ; Ghiorso, Mark S</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a241t-466416ad379cb69689a4d467250c5caa646c05bcd5a4f41994855a4162fc96103</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1991</creationdate><topic>chrome spinel</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>Exact sciences and technology</topic><topic>geochemistry</topic><topic>geologic thermometry</topic><topic>igneous and metamorphic rocks</topic><topic>metamorphic rocks</topic><topic>metamorphism</topic><topic>mineral assemblages</topic><topic>Mineralogy</topic><topic>minerals</topic><topic>nonsilicates</topic><topic>oxides</topic><topic>P-T conditions</topic><topic>Petrology</topic><topic>phase equilibria</topic><topic>Physics</topic><topic>properties</topic><topic>Structure of solids and liquids; crystallography</topic><topic>theoretical studies</topic><topic>thermodynamic properties</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sack, Richard O</creatorcontrib><creatorcontrib>Ghiorso, Mark S</creatorcontrib><collection>Pascal-Francis</collection><jtitle>The American mineralogist</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sack, Richard O</au><au>Ghiorso, Mark S</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Chromian spinels as petrogenetic indicators; thermodynamics and petrological applications</atitle><jtitle>The American mineralogist</jtitle><date>1991-06</date><risdate>1991</risdate><volume>76</volume><issue>5-6</issue><spage>827</spage><epage>847</epage><pages>827-847</pages><issn>0003-004X</issn><eissn>1945-3027</eissn><coden>AMMIAY</coden><abstract>A model is developed for the thermodynamic properties of chromian spinels of petrological interest. The model is internally consistent with the thermodynamic data of Berman. A geothermometer based on exchange of Fe and Mg between olivine and spinel is developed which may be applied with confidence to assemblages formed at low P and at T 400-1400 degrees C. Phase relations within the spinel prism [(Fe,Mg)(Al,Cr,Fe3+)2O4] are calculated for T over the range 500-600 degrees C and compare favourably with petrological observations.</abstract><cop>Washington, DC</cop><pub>Mineralogical Society of America</pub><tpages>21</tpages></addata></record>
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language	eng
recordid	cdi_pascalfrancis_primary_4307058
source	Free Full-Text Journals in Chemistry
subjects	chrome spinel Condensed matter: structure, mechanical and thermal properties Exact sciences and technology geochemistry geologic thermometry igneous and metamorphic rocks metamorphic rocks metamorphism mineral assemblages Mineralogy minerals nonsilicates oxides P-T conditions Petrology phase equilibria Physics properties Structure of solids and liquids crystallography theoretical studies thermodynamic properties
title	Chromian spinels as petrogenetic indicators; thermodynamics and petrological applications
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