| Abstract: | The heat capacities have been measured between 7 and 650 K by quasi-adiabatic calorimetry and differential scanning calorimetry. At 298.15 K and 1 bar, the calorimetric entropy for our sample is 354.9??0.7 J/(mol.K). A minimum configurational entropy of 18.7 J/(mol.K) for full disorder of Al/Si in the tetrahedral sites should be added to the calorimetric entropy for third-law calculations. The heat capacity equation [Cp in units of J/mol.K)] Cp0 = 583.586 + 0.075246T - 3420.60T-0.5 - (4.4551 ?? 106)T-2 fits the experimental and estimated heat capacities for our sample (valid range 250 to 1000 K) with an average deviation of 0.37%. -from Authors |
| Genre: | Article |
| ProdID: | 70016292 |
| Citation Author: | Hemingway, B. S.; Robie, R. A. |
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| Citation End Page: | 187 |
| Citation Issue: | 1-2 |
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| Citation Language: | English |
| Citation Larger Work Title: | American Mineralogist |
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| Citation Number Of Pages: | 5 |
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| Citation Search Results Text: | Heat capacities and thermodynamic properties of annite (aluminous iron biotite); 1990; Article; Journal; American Mineralogist; Hemingway, B. S.; Robie, R. A. |
| Citation Start Page: | 183 |
| Citation Volume: | 75 |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Heat capacities and thermodynamic properties of annite (aluminous iron biotite); 1990; Article; Journal; American Mineralogist; Hemingway, B. S.; Robie, R. A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 1990 00:00 -0600 |
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