[Rockhounds] Super-deep diamond provides first evidence in nature of Earth's fourth most abundant mineral

[Kreigh Tomaszewski]

For the first time, scientists have found Earth's fourth most abundant
mineral—calcium silicate perovskite—at Earth's surface.

"Nobody has ever managed to keep this mineral stable at the Earth's
surface," said Graham Pearson, a professor in the University of Alberta's
Department of Earth and Atmospheric Sciences and Canada Excellence Research
Chair Laureate. He explained the mineral is found deep inside Earth's
mantle, at 700 kilometres.



Read more at:
https://phys.org/news/2018-03-super-deep-diamond-evidence-nature-earth.html#jCp