| Abstract: | The heat capacities of talc, Mg3Si4O10(OH)2, and tremolite, Ca2Mg6Si8O22(OH)2, have been measured between 12 and 305??K. Smoothed values of heat capacity, entropy, enthalpy, and free energy are tabulated. At 298.15?? K. the values of the thermodynamic functions are: talc, Cp?? = 76.89 ?? 0.23 cal. deg.-1 mole-1, S?? = 62.33 ?? 0.19 cal. deg.-1 mole-1, H?? - H6?? = 11,206 ?? 34 cal. mole-1; tremolite, Cp?? = 156.7 ?? 0.6 cal. deg.-1 mole-1, S?? = 131.2 ?? 0.5 cal. deg.-1 mole-1, H?? - H6?? = 23,335 ?? 90 cal. mole-1. From the equilibrium data of Bowen and Tuttle and the entropy of talc, the heat of formation of talc from MgO, SiO2, and H2O (liq.) is calculated to be ??H??f298 = -43.6 ?? 1 kcal. |
| Genre: | Article |
| ProdID: | 70010783 |
| Citation Author: | Robie, R. A.; Stout, J. W. |
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| Citation End Page: | 2256 |
| Citation Issue: | 11 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Physical Chemistry |
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| Citation Number Of Pages: | 5 |
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| Citation Search Results Text: | Heat capacity from 12 to 305°K and entropy of talc and tremolite; 1963; Article; Journal; Journal of Physical Chemistry; Robie, R. A.; Stout, J. W. |
| Citation Start Page: | 2252 |
| Citation Volume: | 67 |
| Citation Year: | 1963 |
| Type: | citation/reference |
| Text: | Heat capacity from 12 to 305°K and entropy of talc and tremolite; 1963; Article; Journal; Journal of Physical Chemistry; Robie, R. A.; Stout, J. W. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DIGITAL OBJECT IDENTIFIER): | http://dx.doi.org/10.1021/j100805a003 |
| Date Other: | Tue, 1 Jan 1963 00:00 -0600 |
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