reconstructive transition

https://doi.org/10.1351/goldbook.R05205
A transition which involves a major reorganization of the crystal structure and a change of local topology, during which primary bonds are broken and reformed so that there is no immediate relationship between the crystal structures of the parent and product phases. Examples: The transition of Mg2SiO4 (olivine) to Mg2SiO4 (spinel); the transition of @[email protected] to @[email protected]
Source:
PAC, 1994, 66, 577. (Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)) on page 589 [Terms] [Paper]