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Stone-Iron meteorites (pallasites)



These consist of a fairly even compound of metal and the mineral olivine and can have a complicated structure. They have their origin in the crust of an asteroid. They are undoubtedly scarce in space, as only 73 of about 33,000 meteorites are of this type.

Pallasites

With up to 50% olivine crystals of up to a centimetre, and 50 % nickel-iron, pallasites are very beautiful, in demand, and expensive. The name originates from a German naturalist
named Pallas who in 1775 took one with him back to Berlin from a find in Krasnoyarsk in Russia. In 1902, in Finnmark County in Norway, a beautiful large pallasite weighing 77 kg
was found.

Mesosiderites

These are meteorites that are also from the crust of a planet, but have a different composition. They do not have the clear, evenly-distributed olivine that pallasites have, but often have a coarser and more unevenly ordered appearance even though the iron/silicate ratio is about 1:1.




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