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Friday, March 23, 2018

Scientists Identify Oldest Crystal On Earth — 4.4 Billion Years Old

By Deborah Netburn, Los Angeles Times The oldest known material on Earth is a tiny bit of zircon crystal that has remained intact for an incredible 4.4 billion years, a study confirms. The ancient remnant of the early Earth may change the way we think about how our planet first formed. The crystal is the […]

February 24, 2014