The ugly diamond holds the ancient secret of the Earth

Imperfect diamonds, criticized by goldsmiths, have become treasures for scientists because they were discovered to hold the secrets of early continents.

Research led by scientist Karen Smit, from the nonprofit Gemological Research Institute of America, shows that some diamonds found in Sierra Leone (West Africa) are not pure because they contain sulfur minerals inside. , can reveal ancient secrets from 2.5 billion years ago, according to an exchange between Ms. Smit and Live Science.

The ugly diamond holds the ancient secret of the Earth
An “imperfect” diamondback found in West Africa – (photo provided by the research team)

Analysis shows that those minerals existed on the planet’s surface as long as 2.5 billion years ago, before there was an increase in atmospheric oxygen. However, a strange process of the earth has brought these materials into the world hundreds of kilometers underground, lying there and waiting for the milestone about 650 million years ago, the diamonds formed and enveloped them. take them.

The strange process that is subduction and the minerals that exist in diamonds suggest that it was subduction that created the African continent – the cradle of humanity . Subduction is a process that occurs when two tectonic plates move in the direction of attraction to each other, so that one of the two plates will go under the other. Of course, when a tectonic plate “sinks” into the ground, other materials will have a chance to emerge. The process of continuous plate tectonics created the earth with the continents and oceans as we see them today.

Going back to sulfur minerals , the fact that it is hidden in diamonds shows that the tectonic plate it once occupied left the ground billions of years ago and entered the subterranean world, where diamonds were formed. Diamonds are originally formed deep in the mantle, most about 200km underground, some 400-700km underground. We find diamonds because they follow deep volcanic eruptions that shoot out of the underground world. Ancient sulfur minerals have a chance to see the sun again, thanks to diamond “trains” and lava rivers.

The team continued to study mineral-coated diamonds in Canada’s Ekati mine and obtained similar results. The “impurities” in Canadian diamonds date back up to 3.5 billion years.

They are continuing to collect imperfect diamonds from many more places around the world to strengthen the construction.