Seismic studies indicate that the Earth has an iron nickel core that is probably very similar to iron meteorite specimens. The structural classification system was devised by a museum curator and is popular with collectors.
Chemical classification relies on the ratios of trace elements in iron meteorites.
To see a list of the chemical types, look at our type table . For more about the details of this system, see Rocks from Space or Meteorites and Their Parent Planets . Click on the picture to see photos, prices, weights, and instructions on how to order meteorites. We have a separate photo catalog for each locality. We are now waiting to cut a large piece.