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The meteorite containing krotite is called NWA 1934 CV3 carbonaceous chondrite. Chondrites are primitive meteorites that scientists think were remnants shed from the original building blocks of planets. Most meteorites found on Earth fit into this group.
The mineral, a compound of calcium, aluminum and oxygen, needs temperatures of 2,732 degrees F (1,500 degrees C) to form, supporting the idea that it was created as the solar nebula condensed and the planets, including Earth, were formed, the researchers say.
The tiny mineral sample – just 0.2 inches (4 millimeters) long – came from a grain in the meteorite dubbed "cracked egg" for its appearance. In addition to krotite, the cracked egg grain contains at least eight other minerals, one of which is new to science, the researchers say.