A simple predictive model for the thermal expansion of AlSi3 feldspars

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A simple predictive model for the thermal expansion of AlSi3 feldspars

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dc.contributor.author Hovis, Guy L.
dc.contributor.author Roux, J.
dc.contributor.author Harlov, D.
dc.contributor.author Henderson, C. M. B.
dc.contributor.author Mott, A.
dc.contributor.author Person, E. L.
dc.contributor.author Morabito, J. R.
dc.contributor.author Spooner, A.
dc.date.accessioned 2010-01-08T15:45:13Z
dc.date.available 2010-01-08T15:45:13Z
dc.date.issued 2008
dc.identifier.citation Hovis, G., et al. (2008). "A simple predictive model for the thermal expansion of AlSi3 feldspars." American Mineralogist 93: 1568-1573. en_US
dc.identifier.uri http://hdl.handle.net/10385/544
dc.description.abstract We have investigated the thermal expansion of several synthetic feldspars, including Li-feldspar, rubicline (Rb-microcline), Rb-sanidine, and buddingtonite (NH4-feldspar). When analyzed in conjunction with earlier data on both ordered and disordered Na- and K-feldspars, it is clear that the coefficient of thermal expansion (α) decreases dramatically, and linearly, with increasing room-temperature volume. For “AlSi3” feldspars, then, chemical expansion limits thermal expansion. The relationship between α and room-temperature volume provides a useful predictive tool based simply on the volume of a feldspar at room temperature. This relationship also reveals that volumes of K-Na mixing in naturally occurring alkali feldspars decrease with increasing temperature. en_US
dc.language.iso en_US en_US
dc.publisher American Mineralogist en_US
dc.subject Feldspars en_US
dc.subject Thermal expansion en_US
dc.title A simple predictive model for the thermal expansion of AlSi3 feldspars en_US
dc.type Article en_US
dc.identifier.doi 10.2138/am.2008.2793

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