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Experimental calibration of aluminum partitioning between olivine and spinel as a geothermometer
-
Zhihuan Wan
and
Dante Canil
Published/Copyright:
April 1, 2015
Abstract
The temperature dependence of the partitioning of Al2O3 between forsterite-rich olivine and Crrich spinels has been experimentally calibrated at 100 kPa between 1250 and 1450 °C under reducing conditions. For spinel with values of YCr between 0.07 and 0.69, and containing <0.1 Fe3+ atoms and <0.025 Ti atoms per 4 O atoms the experimental data can be fit to an equation:
where YCr = Cr/(Cr + Al) in spinel in atomic proportions and KD = Al2O3ol/Al2O3sp in wt%. This equation reproduces the temperature of the experiment for the calibration data set within ±22 °C. Empirical tests suggest that this geothermometer has little pressure dependence within the range of pressures encountered in the crust and upper mantle.
Received: 2007-8-1
Accepted: 2008-1-14
Published Online: 2015-4-1
Published in Print: 2008-7-1
© 2015 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
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- High-temperature ammonium white mica from the Betic Cordillera (Spain)
- Synthesis and crystal structure of the feldspathoid CsAlSiO4: An open-framework silicate and potential nuclear waste disposal phase
- The crystal chemistry of Li in gadolinite
- The effect of the hedenbergitic substitution on the compressibility of jadeite
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- Ramanite-(Cs) and ramanite-(Rb): New cesium and rubidium pentaborate tetrahydrate minerals identified with Raman spectroscopy
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- Arsenide in a metasomatized peridotite xenolith as a constraint on arsenic behavior in the mantle wedge
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