The List of crystalline phases under the general name "PROTOENSTATITE" with estimated Lattice Potential Energies

NCardSpecieFormulaUpotIonic Strength Factor
1.1355[2], td-hypersthene, at 1080oCMgSiO31618416
2.1356[3], td-hyperstheneMgSiO31665716
3.1357[4], td-hypersthene, at 1260oCMgSiO31590816