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TITLE: Meteorite Classification

[Photo: Meteorite Classification Chart]

Meteorites are named after the places where they are found, and they are classified into three broad categories and several subcategories.

  • Stony meteorites consist mostly of silicate minerals. There are two types: chondrites and achondrites.
  • Stony-iron meteorites have roughly equal amounts of metal and silicates. They include the pallasites and mesosiderites.
  • Iron meteorites are primarily metal. They are classified into 12 major groups according to their relative amounts of iron, nickel, and certain trace elements.

Smithsonian National Museum of Natural History