Wednesday, June 21, 2023

https://youtu.be/hXs--EGYPh4

Scientists have found an extraterrestrial meteorite with hexagonal diamond crystals. Before they found them in four meteorites in north-western Africa, scientists didn't believe they existed. Despite hexagonal rather than cubic atom arrangements, their chemical composition is carbon. Because these crystals were so tiny, it was challenging to determine whether they were hexagonal diamonds. Using an electron microscope, they examined 18 meteorite samples for bigger crystals. They found four African meteorites to contain hexagonal diamonds, some of which were up to a micrometre in size, or 1000 times larger than known crystals. The discovery of lonsdaleite, a rare hexagonal form of diamond that may be more durable than regular diamonds, in ureilite meteorites that were formed in the mantle of a far-off dwarf planet was made by the researchers. About 4.5 billion years ago, a huge asteroid and the dwarf planet may have collided, creating the lonsdaleite. Ricardo Valls ORCID ID- https://orcid.org/0000-0002-5421-0914 Scopus Author ID: 7003369619 ResearcherID: S-6604-2018 Scopus Author ID: 35335510700 If you like this content, please "buy me a coffee" https://www.buymeacoffee.com/goldendroplets

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