Alais vs Chassigny
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Alais
Alais is a CI1 carbonaceous chondrite that fell near Alais, now called Ales, in southern France in 1806. CI meteorites are chemically primitive, rich in hydrated minerals, and notable for elemental compositions that closely resemble the nonvolatile composition of the Sun, although their original textures have been heavily altered by water. Claims made during the twentieth century that Alais contai...
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Chassigny
Chassigny is a Martian meteorite that fell near Chassigny, France, in 1815. It is composed predominantly of olivine-rich dunite and gives its name to the chassignites, a rare group within the SNC meteorites from Mars. Researchers study its minerals, isotopes, and trapped gases to investigate the Martian mantle, the crystallization of igneous rocks, and the geological history recorded by material e...
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