How could a scientist of his presumed caliber discover an exotic 10-ton pallasite and not record it in his journal?
Ilimaes is another pallasite found in the Atacama Desert about 50 years after Imilac and 170 miles farther south.
"The best, coolest ones I keep for myself." His current darling is the 571-kilogram Esquel pallasite, the largest of its kind in the world.
Sometimes irons are laced with silicate minerals, resulting in attractive (and valuable) specimens called mesosiderites or pallasites.
Scientists think pallasites
formed at the core/mantle boundary of asteroids.
Stony-irons have three possible classes: pallasites
, mesosiderites, and lodranites.
Norton begins with chondrites, the primitive stones that have survived from the earliest times in solar-system history, and methodically works his way to exotic types like pallasites
(samples from the core-mantle boundaries of asteroids that have been smashed apart) and meteorites from the Moon and Mars.
For one, it is the granddaddy of the meteorite class now dubbed pallasites. The circumstances of its landing - seemingly as gentle as a marshmallow landing on a featherbed - are a mystery, but its contribution to the founding of the science of meteoritics is well established.
Then in 1863 the work of the German mineralogist Gustav Rose established the class of stony-iron meteorites called pallasites, the subclasses of which have varying amounts of iron, nickel, and olivine.