|Latitude & Longitude (WGS84):||30° 45' South , 117° 47' East|
|Latitude & Longitude (decimal):||-30.75000,117.78333|
|Locality type:||Meteorite Fall Location|
|Meteorite Class:||CBa chondrite meteorite|
|Meteoritical Society Class:||CBa|
|Metbull:||View entry in Meteoritical Bulletin Database|
|Köppen climate type:||BSh : Hot semi-arid (steppe) climate|
This meteorite was found in 1930, almost completely buried in newly cleared land, on Holland and Breakill's wheat farm (Block 2557), 15 kilometres north-west of Bencubbin.
It is pyramid-shaped, 30cm x 20cm at its base, 18cm x 13cm at the top, 23cm deep, 54kg and a specific gravity of 5.32.
The surface was covered completely by an oxidised layer, which also penetrated the meteorite along the surfaces of metallic masses. Under the layer, its colour is greyish to brownish black, with regular enstatite, coloured greyish white as single crystals 5-10mm in diameter and often multiply twinned. There was also dark olive coloured olivine crystals the same size as the enstatite.
Mineral composition is nickel iron 47.8%, troilite 1.6%, enstatite 23.1%, olivine 20.2%, anorthite 1% and chromite 0.2%.
The meteorite has been classified as a stony-iron or mesosiderite,but eventually became a Carbonaceous Chondrite Prototype (CBa) largely because of its silicate composition and its very unusual oxygen isotope ratios.
17 valid minerals.
Meteorite/Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
0 - 2.588 Ma
Age: Pleistocene (0 - 2.588 Ma)
Comments: regolith; synthesis of multiple published descriptions
Reference: Raymond, O.L., Liu, S., Gallagher, R., Zhang, W., Highet, L.M. Surface Geology of Australia 1:1 million scale dataset 2012 edition. Commonwealth of Australia (Geoscience Australia). 
|Neoarchean - Mesoarchean|
2500 - 3200 Ma
|Archean crystalline metamorphic rocks|
Age: Archean (2500 - 3200 Ma)
Comments: Yilgarn Craton
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529.