Pollen vs Ivuna
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Pollen
Pollen is a meteorite from Norway that fell in 1942 and is classified as a CM2 carbonaceous chondrite. The CM2 designation identifies a hydrated type of meteorite containing carbon-bearing material and minerals altered by water on its parent body. Pollen is relevant to the study of early solar-system material and the chemical history of carbonaceous asteroids.
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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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