Efremovka vs Ivuna
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Efremovka
Efremovka is a reduced CV3 carbonaceous chondrite found in Kazakhstan in 1962. It contains well-preserved chondrules and calcium-aluminum-rich inclusions, among the earliest solids known to have formed in the Solar System, as well as presolar grains inherited from material predating it. These components make Efremovka important to researchers examining primitive meteorites, early Solar System chro...
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Ivuna
Ivuna is a CI1 carbonaceous chondrite that fell near Ivuna, Tanzania, in 1938. CI meteorites are rare, chemically primitive materials whose nonvolatile elemental abundances closely resemble those measured in the Sun, although their minerals have been extensively altered by water on their parent body. Ivuna is therefore studied for evidence about early solar-system chemistry, aqueous alteration, or...
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