Because of they contain much iron-nickel metal, all metal-bearing meteorites are attracted to a magnet. With a few rare and well known exceptions, naturally occurring terrestrial rock do not contain iron metal or iron-nickel metal. There are two reasons. read more
Platinum group metals. Platinum group metals do not occur naturally in the Earth’s crust, but are present due to earlier meteorite impacts. A meteorite is simply a piece of asteroid which has fallen to Earth, so the study of meteorites gives geologists a good idea of the most suitable types of asteroid to choose as candidates for mining. read more
Also, the metal in meteorites have very low concentrations of chromium and manganese, <0.02%. These two elements are common in man-made metals however. If the metal contains more than 0.02% chromium or manganese, then it's not a meteorite. read more
LL-group chondrites (15% of all meteorites) have the least metal among ordinary chondrites, 3-5%. Because chondrites are rich in metal and the metal is rich in nickel, all chondrites have a bulk (whole rock) concentrations of Ni (nickel) of 1.0-1.8% (i.e., 10000-18000 ppm). read more