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Al2O3-AlPO4-Mg3(PO4)2-H2O

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Journal Article

Heat capacity of lazulite, MgAl 2 (PO 4 ) 2 (OH) 2 , from 35 to 298 K and a (S–V) value for P 2 O 5 to estimate phosphate entropy

F. Brunet, D. Morineau, P. Schmid-Beurmann
Published: 01 February 2004
Mineralogical Magazine (2004) 68 (1): 123–134.
DOI: https://doi.org/10.1180/0026461046810175
...F. Brunet; D. Morineau; P. Schmid-Beurmann Abstract The heat capacity of synthetic lazulite, MgAl 2 (PO 4 ) 2 (OH) 2 , has been measured between 35 and 298 K by means of low-temperature adiabatic calorimetry. A lazulite third-law entropy ( S 0 298 ) value of 204(3) J K −1 mol −1 was retrieved after...
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Polymorphism and thermochemistry of MgAlPO 4 O, a product of lazulite breakdown at high temperature

Peter Schmid-Beurmann, Fabrice Brunet, Volker Kahlenberg, Edgar Dachs
Published: 01 March 2007
European Journal of Mineralogy (2007) 19 (2): 159–172.
DOI: https://doi.org/10.1127/0935-1221/2007/0019-1709
...Peter Schmid-Beurmann; Fabrice Brunet; Volker Kahlenberg; Edgar Dachs Abstract The phase MgAlPO 4 O is a thermal decomposition product of the metamorphic phosphate mineral lazulite, MgAl 2 (PO 4 ) (OH) ; its polymorphism and thermochemistry were investigated. The room-temperature β″-polymorph...
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