The heat-capacity of ilmenite and phase equilibria in the system Fe-T-O
dc.contributor.author | Anovitz, Lawrence M. | en_US |
dc.contributor.author | Treiman, Allan H. | en_US |
dc.contributor.author | Essene, Eric J. | en_US |
dc.contributor.author | Hemingway, Bruce S. | en_US |
dc.contributor.author | Westrum, Jr. , Edgar F. | en_US |
dc.contributor.author | Wall, Victor J. | en_US |
dc.contributor.author | Burriel, Ramon | en_US |
dc.contributor.author | Bohlen, Steven R. | en_US |
dc.date.accessioned | 2006-05-10T15:40:52Z | |
dc.date.available | 2006-05-10T15:40:52Z | |
dc.date.issued | 1985-10 | en_US |
dc.identifier.citation | Anovitz, Lawrence M., Treiman, Allan H., Essene, Eric J., Hemingway, Bruce S., Westrum, Jr., Edgar F., Wall, Victor J., Burriel, Ramon, Bohlen, Steven R. (1985/10)."The heat-capacity of ilmenite and phase equilibria in the system Fe-T-O." Geochimica et Cosmochimica Acta 49(10): 2027-2040. <http://hdl.handle.net/2027.42/25563> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6V66-48C8K89-15R/2/1dc6bd2c5764de2577b77d144eb7452c | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/25563 | |
dc.description.abstract | Low temperature adiabatic calorimetry and high temperature differential scanning calorimetry have been used to measure the heat-capacity of ilmenite (FeTiO3) from 5 to 1000 K. These measurements yield S2980 = 108.9 J/(mol [middle dot] K). Calculations from published experimental data on the reduction of ilmenite yield [Delta]2980(I1) = -1153.9 kJ/(mol [middle dot] K). These new data, combined with available experimental and thermodynamic data for other phases, have been used to calculate phase equilibria in the system Fe-Ti-O. Calculations for the subsystem Ti-O show that extremely low values of [function of (italic small f)]O2 are necessary to stabilize TiO, the mineral hongquiite reported from the Tao district in China. This mineral may not be TiO, and it should be re-examined for substitution of other elements such as N or C. Consideration of solid-solution models for phases in the system Fe-Ti-O allows derivation of a new thermometer/oxybarometer for assemblages of ferropseudobrookite-pseudobrookitess and hematite-ilmenitess. Preliminary application of this new thermometer/oxybarometer to lunar and terrestrial lavas gives reasonable estimates of oxygen fugacities, but generally yields subsolidus temperatures, suggesting re-equilibration of one or more phases during cooling. | en_US |
dc.format.extent | 77272 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.extent | 2017755 bytes | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | text/plain | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en_US | en_US |
dc.publisher | Elsevier | en_US |
dc.title | The heat-capacity of ilmenite and phase equilibria in the system Fe-T-O | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Geology and Earth Sciences | en_US |
dc.subject.hlbsecondlevel | Chemistry | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Dept. of Geological Sciences, Univ. of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.contributor.affiliationum | Dept. of Geological Sciences, Univ. of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.contributor.affiliationum | Dept. of Geological Sciences, Univ. of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.contributor.affiliationum | Dept. of Chemistry, Univ. of Michigan, Ann Arbor, MI 48109, U.S.A. | en_US |
dc.contributor.affiliationother | U.S. Geological Survey, Mail Stop 959, Reston, VA 22092, U.S.A. | en_US |
dc.contributor.affiliationother | Dept. of Earth Sciences, Monash Univ., Clayton, Victoria, 3168, Australia | en_US |
dc.contributor.affiliationother | Faculty of Science, Departmento de Termologia, Facultad de Ciencias, Universidad de Zaragosa, 50009, Zaragosa, Spain | en_US |
dc.contributor.affiliationother | Dept. of Earth and Space Sciences, State University of New York, Stony Brook, NY 11794, U.S.A. | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/25563/3/0000105.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0016-7037(85)90061-4 | en_US |
dc.identifier.source | Geochimica et Cosmochimica Acta | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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