From the Meteoritical Bulletin: Admire is one of 43 known pallasites, first found in Kansas in 1881.
<p>The Admire pallasite formed at the mantle-core boundary of an asteroid about 4.5 billion years ago. Deep inside the asteroid, molten metal from the outer core mixed with chunks of the olivine mantle that had crystallized. Things remained quiet for Admire until a major collision shattered the asteroid roughly 100 million years ago; this event and subsequent, less energetic collisions set the Admire pallasite material on a collision course with Earth. 
</p><p>Admire is a pallasite stony-iron meteorite containing a mixture of olivine crystals and nickel-iron metal in approximately equal amounts. Pallasites are one of the rarest types of iron-rich meteorites. The original Admire Pallasite was discovered in 1881 in a farm in Lyon County Kansas when it was struck by a plow.  A return with metal detectors found more.
</p><p>With 11% Nickel-Iron, it is a typical main group Pallasite. Pallasites represent less than 0.2% of all known meteorites
</p><p>The extraterrestrial olivine can be seen when the specimens are backlit (examples below). The olivine in pallasites is the same mineral as the gemstone Peridot but these peridot are special they are not from the Earth. 
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1.26 kg,  15cm X 6.5cm X 6cm
Steve Jurvetson
CC BY 2.0
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