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No. Not all meteorites contain the necessary Iron and/or Nickel, a combination of which is the magnetic medium contained in those meteors and meteorites (meteors which fall to Earth) that makes them able to hold a magnetic "field". I am not knowledgeable as to why tiny pieces of interplanetary rock and metal have a magnetic field, though. That is a cosmological question probably related to conditions during the beginnings of the Solar System.

The meteors and meteorites that are most common and not magnetized as a result of their lack of iron or nickel, are called "carbonaceous chondrites." They are stony but usually less massive than the Nickel/iron containing meteors and meteorites.

Interestingly, there is a sort of mathematical rule of thumb which indicates that for each, or any meteor of a given size, there are 3 more similar meteors/meteorites of smaller sizes. This is true from planetesimal size giants a thousand kilometers in diameter down to the grain sized particles in "rings" of material in what is thought to be a planetary "parking spot" between Mars and Jupiter. Usually referred to as the "asteroid belt"; it is often thought to be either the remnants of a planet which fell apart or of a planet that never formed.

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16y ago

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