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Isna

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description Isna Overview

Isna is a carbonaceous chondrite meteorite of the CO3 group discovered in Egypt. Like other CO chondrites, it is characterized by a fine-grained matrix, small type I chondrules, and abundant metal. Meteorites of this classification are studied by planetary scientists to understand the early solar system and the formation of carbon-rich asteroids.

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Where does the meteorite Isna come from?

Isna is a meteorite found in Egypt and named after its locality. It is studied as a carbonaceous chondrite rather than as a lunar or Martian meteorite. [NASA Technical Reports Server](https://ntrs.nasa.gov/citations/19910025968)

What does the CO3 classification mean for Isna?

CO3 identifies Isna as a carbonaceous chondrite of the CO group and petrologic type 3, a relatively primitive class with limited thermal alteration. Its fine-grained matrix and small type I chondrules preserve material from the early Solar System. [Meteoritical Bulletin](https://www.lpi.usra.edu/meteor/metbullclass.php?sea=CO3-an)

Why are Isna's chondrules and metal scientifically useful?

The meteorite contains a fine-grained matrix, small type I chondrules, and abundant metal, giving researchers several components to compare within one primitive rock. Those textures help planetary scientists study how dust and molten droplets were assembled in the early solar nebula. [ScienceDirect](https://www.sciencedirect.com/science/article/pii/0012821X8390184X)

What can Isna reveal about its journey through space?

A study measured noble gases and cosmogenic isotopes including beryllium-10, aluminum-26, manganese-53, and cobalt-60. Those measurements gave Isna a cosmic-ray exposure age of about 200,000 years. [ScienceDirect](https://www.sciencedirect.com/science/article/pii/0012821X8390184X)

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