The discovery of davemaoite, the CaSiO3-perovskite, in a diamond from Earth’s lower mantle

George R. Rossman1, Oliver Tschauner2


1Division of Geological and Planetary Sciences, Califorina Institute of Technology

2 Department of Geoscience, University of Nevada, Las Vegas


ABSTRACT
The examination of inclusions in an 81 mg octahedral diamond from Orapa, Botswana has resulted in the discovery of the high-pressure form of CaSiO3 in the perovskite structure trapped within the diamond.


Orapa Diamond

A coated diamond from Orapa similar to the one in which davemaoite was discovered.