Dr. Dean Smith and members of Salamat Lab published in Phys. Rev. Materials

The Salamat lab has successfully demonstrated that the mineral CaCO3, under high pressure and temperature conditions, is capable of undergoing sp² -sp³ hybridization change purely in a P 2₁ /c structure—forgoing the accepted postaragonite Pmmn structure. Their newly reported work in Phys. rev. Materials has significant relevance for the storage of carbon within the Earth’s deep mantle.

Postaragonite phases of CaCO3 at lower mantle pressures
Dean Smith, Keith V. Lawler, Miguel Martinez-Canales, Austin W. Daykin, Zachary Fussell, G. Alexander Smith, Christian Childs, Jesse S. Smith, Chris J. Pickard, and Ashkan Salamat
Phys. Rev. Materials 2, 013605 (2018) – Published 31 January 2018