Iron (IIIAB) Medium Octahedrite
Northern Territory, Australia
The Henbury iron meteorites are found in association with a cluster of craters. The site was first investigated by A. R. Alderman who reported his finding in 1932. The follow diagram is a sketch of the craters and the location of fragments from that publication.
Many of the fragments of iron found at the site show clearly the disruption that can occur at the time of impact. Many are sharp edged and twisted. The following pictures are of a fragment which was both torn apart and not torn apart.
The ends of this fragment have been torn away with an unknown amount of material removed. The lamellae of the meteorite's structure show as spaced layers of metal.
On the opposite side of the specimen the tearing was incomplete and the metal is stretched but not ripped fully apart. The layers of metal connect the sides of the tear.
Many of the fragments of meteorite from Henbury are beautifully sculptured and covered with thumbprints. Even many of the smaller pieces are round and smooth. But some like the one shown here demonstrate the tremendous forces involved in the formation of craters. The Henbury site also has impact glass associated with the large Main Crater.