Iron Meteorite Cooling Rates COSMOCHEMISTRY iLLUSTRATED Exsolution in Iron Meteorites Bands of kamacite (Fe- Ni metal low in Ni) formed by exsolution in.

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Iron Meteorite Cooling Rates COSMOCHEMISTRY iLLUSTRATED Exsolution in Iron Meteorites Bands of kamacite (Fe- Ni metal low in Ni) formed by exsolution in taenite, Fe-Ni higher in Ni. The two phases have different crystal structures. Kamacite exsolved along octahedral planes in taenite. IVA Iron Meteorite, Gibeon Photo by Jeffrey Gillis-Davis, U. of Hawaii

Iron Meteorite Cooling Rates COSMOCHEMISTRY iLLUSTRATED Cooling Rates Iron-Nickel Phase DiagramGrowth of Kamacite

Iron Meteorite Cooling Rates COSMOCHEMISTRY iLLUSTRATED Cooling Rates Matching the measured profile with calculated profiles indicates that the cooling rate of this sample is 1000 K/My. In total, iron meteorite cooling rates range from about 1 to almost 10,000 K/My