trackstar wrote:On the subject of diamonds today:
What scientists found trapped in a diamond: a type of ice not known on Earth - LA Times March 9 2018
"Trapped in the rigid structure of diamonds formed deep in the Earth's crust, scientists have discovered a form of water ice that was not previously known to occur naturally on our planet.
The finding, published Thursday in Science, represents the first detection of naturally occurring ice-VII ever found on Earth. And as sometimes happens in the scientific process, it was discovered entirely by accident."
and the original article in Nature:
CaSiO3 perovskite in diamond indicates the recycling of oceanic crust into the lower mantle
Nature volume 555, pages 237–241 (08 March 2018)
"Laboratory experiments and seismology data have created a clear theoretical picture of the most abundant minerals that comprise the deeper parts of the Earth’s mantle. Discoveries of some of these minerals in ‘super-deep’ diamonds—formed between two hundred and about one thousand kilometres into the lower mantle—have confirmed part of this picture.."
Dr. Hoenikker used to say that any scientist who couldn't explain to an eight-year-old what he was doing was a charlatan.