I was really excited to obtain this slice of a Stony Iron Pallasite Meteorite.  It is only tiny but really heavy and has the loveliest Olivine patterns.  Pallasites are some of the most attractive and rare meteorites.



Stony Iron Pallasite Meteorite Slice

You can see this in my stock list here along with many other lovely and unusual minerals and fossils.

Pallasite is a rare form of a stony-iron meteorite.  It consists of nickel and iron but has a lovely olive green-gold mineral embedded in it called, appropriately, Olivine which is a magnesium-silicate.

Olivine in Pallasite Meteorite Slice

 When asteroids collide “small” (relative to the size of the original whole) particles break away and some, if caught in the earth’s gravitational field, are drawn towards us and fall to earth.  It is believed that the “asteroid belt” was formed about 4,500 million years ago.  The featured image, at the top of this blog, is an artist’s impression of an asteroid belt by NASA.

Asteroid Belt Schematic by NASA

A small portion of meteorites come from the moon and indeed from Mars according to studies of rock composition in the samples from the Apollo lunar mission and the Martian samples from the Apollo Viking probe.

Brahin meteorite, pallasite. 3 kg end piece, cut and polished by Steve JurvetsonBrenham pallasite, world's largest oriented palisite on display at Kansas City's Union Station by Shaun McGee

Many meteorites fall into the sea but many can be found all over the world, particularly in deserts and polar regions where they are easier to find. For the cosmologists and cosmochemists their chemical structure provides some insight into the history of the solar system.

Forsterite (Var.: Olivine) by Rob Lavinsky, iRocks.com – CC-BY-SA-3.0Imilac pallasite. Found 1822, Atacama Desert, Chile. American Museum of Natural History by Claire H.

Olivine in its purest form is what we call Peridot a semi-precious stone used in jewellery.


© Copyright Charlotte M Bailey 2013