Cranbourne meteorite

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Cranbourne
Cranbourne meteorite.jpg
A fragment of the Cranbourne meteorite called "Pearcedale".
Group IAB Main group (MG)[1]
Country Australia
Region Victoria
Coordinates 38°6′S 145°18′E / 38.100°S 145.300°E / -38.100; 145.300Coordinates: 38°6′S 145°18′E / 38.100°S 145.300°E / -38.100; 145.300
Observed fall No
Fall date Unknown
Found date 1854
TKW 8,600 kilograms (19,000 lb)[1]
Strewn field Yes

Cranbourne meteorite is an octahedrite iron meteorite. It is the second largest meteorite found in Australia after the Mundrabilla meteorite, but at the time of discovery it was the largest iron meteorite in the world. It is classified as a main group IAB meteorite.[1][2]

Discovery[edit]

It is not clear when the first fragments of the meteorite were found. They were first recognized as meteoric in origin at an exhibition in Melbourne in 1854. A piece of fragment "Cranbourne 001" that had been made into a horse shoe was on display there. When investigations were made two masses, Cranbourne 001 and 002 were found buried at their original impact site that had been mistaken as an outcrop of an telluric iron deposit.[2]

Cranbourne 003 was found in 1860. It had been found by a farmhand around 1857 and used as a hotplate. It was later lost in shipping for scientific investigation.[2]

The meteorite may have fallen as recently as 200 years ago.[2]

Fragments[edit]

Replicas of some of the fragments can be seen in "Meteorite park" in Cranbourne 38°05′51″S 145°16′57″E / 38.097433°S 145.282513°E / -38.097433; 145.282513.

The following table lists all the fragments of the Cranbourne meteorite:

Fragment Name Year found Mass [kg] Location
Cranbourne 1 - ~1853 3550 Natural History Museum
Cranbourne 2 - ~1853 1525 Melbourne Museum
Cranbourne 3 - ~1857 ~6.8 Lost in shipping
Cranbourne 4 - 1923 1270 Melbourne Museum
Cranbourne 5 - 1923 356 Collection of the ministry of primary industries
Cranbourne 6 Packenham 1928 40.5 Melbourne Museum
Cranbourne 7 - 1923 153 University of Melbourne, Department of natural history
Cranbourne 8 - 1923 23.6 Collection of the ministry of primary industries
Cranbourne 9 Beaconsfield 1876 74.9 Cut into pieces and sold by mineral dealer.
Cranbourne 10 Langwarrin 1886 914 Melbourne Museum
Cranbourne 11 Pearcedale 1903 762 National Museum of Natural History
Cranbourne 12 - 1927/1982 23 City of Casey

References[edit]

  1. ^ a b c "Cranbourne". Meteoritical Society. Retrieved 29 December 2012. 
  2. ^ a b c d "The Cranbourne Meteorites". City of Casey. Retrieved 29 December 2012. 

See also[edit]