Geologists Find Rock amongst 30,000 Diamonds

Rare diamondiferous peridotite from the Udachnaya diamond mine. Image credit: Lawrence Taylor.

“It is a wonder why this stone has to a greater extent than than 30,000 colorless, octahedral micro-diamonds – all 10 to 700 micron inwards size, many occurring inwards clusters,” Prof Taylor said.

Scientists believe that diamonds cast at only about 160 km deep inwards the Earth’s drape too are carried to the surface past times particular volcanic eruptions. However, close drape rocks crumble during this journey.

The stone from the Udachnaya mine is 1 of alone a few hundred recovered inwards which the diamonds are nonetheless inwards their master copy setting from within the Earth.

“Diamonds never nucleate too thus homogeneously every bit this,” Prof Taylor said.

“Normally, they produce too thus inwards alone a few selective places too grow larger. It’s similar they didn’t accept fourth dimension to coalesce into larger crystals.”

In add-on to diamonds, the 10.5 g stone contains specks of cherry-red too greenish garnet too other minerals.

Prof Taylor too his colleagues examined it using a giant X-ray machine to written report the diamonds too their relationships alongside associated materials.

They every bit good beamed electrons at the materials within the diamonds to written report the chemicals trapped inside.

This created 2D too 3D images which revealed a human relationship betwixt minerals.

Analyses of nitrogen indicated the diamonds were formed at higher-than-normal temperatures over longer-than-normal times.

The images every bit good showed abnormal carbon isotopes for this type of rock, indicating it was originally formed every bit job of the crust of the Earth, withdrawn past times tectonic shifts too transformed into the shimmery stone scientists meet today.

“These are all novel too exciting results, demonstrating evidences for the nascency machinery of diamonds inwards this stone too diamonds inwards general,” said Prof Taylor.

The findings were presented Dec fifteen at the American Geophysical Union’s Annual Conference inwards San Francisco.

The to a higher house even out is based on materials provided by  American Geophysical Union’s Annual Conference.  Note: Materials may be edited for content too length.