Often metal grains appear on broken surfaces of stone meteorites as rust spots, especially if it is weathered. ![]() To see the metal or metal grains within a meteorite you must grind a small window on the specimen. The rest, less than 2% are the stony irons having an almost 50-50 mixture of stone and malleable iron-nickel. 93% of all meteorites seen to fall are stones, and only about 5% are solid nickel-irons. This amount ranges from a few percent to 100%. This is not only because of the types of minerals found in them but because almost all of them have varying amounts of malleable iron-nickel grains.
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