Jul 3, 2016
Extremely Rare Mineral Found In 450 Million Year Old Meteorite Impact Crater
Extremely Rare Mineral Found In 450 Million Year Old Meteorite Impact Crater
While digging around an ancient meteorite impact crater in Wisconsin, researchers discovered an extremely rare mineral that’s only previously been found in three other places. The mineral, called reidite, is a dense form (polymorph) of the fairly tough gemstone zircon, which is produced when the latter is subjected to very high pressures. While researchers can form this mineral in the laboratory,…
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