Melting and thermodynamic properties of pyrope (Mg3Al2Si3O12)
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Abstract
The heat capacity of Mg3Al2Si3O12 glass has been measured from 10 to 1000 K by adiabatic and differential scanning calorimetry. The heat capacity of crystalline pyrope has been determined from drop-calorimetry measurements between 820 and 1300 K. From these and previously published results a consistent set of thermodynamic data is presented for pyrope and Mg3Al2Si3O12 glass and liquid for the interval 0–2000 K. The enthalpy of fusion at 1570 ± 30 K, the metastable congruent 1-bar melting point, is 241 ± 12kJ/mol.
Publication type | Article |
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Publication Subtype | Journal Article |
Title | Melting and thermodynamic properties of pyrope (Mg3Al2Si3O12) |
Series title | Geochimica et Cosmochimica Acta |
DOI | 10.1016/0016-7037(91)90158-2 |
Volume | 55 |
Issue | 4 |
Year Published | 1991 |
Language | English |
Publisher | Elsevier |
Description | 6 p. |
First page | 1005 |
Last page | 1010 |
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