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METEORITE IDENTIFICATION AND CLASSIFICATION USING MAGNETIC SUSCEPTIBILITY

Introduction: The purpose of this project is to distinguish between meteorites and earth rocks. This is done both for scientific knowledge and as a service to the public. Another purpose is providing research experience for Native American students from the Southwestern Indian Polytechnic Institute. The presence of iron-nickel metal is an important characteristic of most meteorites. Magnetic susceptibility is an excellent method to measure the metal content without destroying the integrity of the meteorite sample, or ruining a nice display specimen. The metal content is also an important aspect of meteorite classification. Procedure: Magnetic susceptibility measures how the sample responds to a magnetic field. The higher the metal content of the meteorite, the higher the magnetic susceptibility value. We can use this method to test suspect meteorite samples and to identify the type of meteorite, because different varieties of meteorites have different amounts of metal. Rochette et al. [1] and other papers [2, 3] established the range in magnetic susceptibility for various meteorite groups.