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Mount Egerton meteorite, Woodlands Station, Upper Gascoyne Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 24° 52' 60'' South , 117° 37' 60'' East
Latitude & Longitude (decimal): -24.88333,117.63333
GeoHash:G#: qeedky1up
Locality type:Meteorite Fall Location
Meteorite Class:Anomalous aubrite meteorite
Meteoritical Society Class:Aubrite-an
Metbull:View entry in Meteoritical Bulletin Database
Köppen climate type:BWh : Hot deserts climate


Aubrite (Enstatite achondrite); found in 1941.

Mt Egerton is located approximately 200 kilometres north-west of Meekatharra, or 80 kilometres east south-east of Mt Augustus, on Woodlands Station, in remote hilly semi arid country. The initial 1.7 kg meteorite fragment was discovered by a local propector in 1941, 15 kilometres north east of Mt Egerton. Subsequent searches located thousands of small fragments under 1 gram. As a result, this material is found commonly for sale. It is classed as an enstatite chondrite meteorite where enstatite is the primary metal discoloured over time by weathering. The meteorite is composed of centimetre sized enstatite crystals with abundant aubrite. Ni sillicide perryite is present, and has been available as micro specimens, accompanied by SEM photographs.

The meteorite's metal phase reveals an orientated fine structure of etching similar to a widmanstatten pattern. Within this structure is perryite inclusions embedded in bands of Fe-Ni, enriched with nickel and contain kamacite. The perryite inclusions are found mainly at the intersections of the nickel bands, although some is also found above and below the bands.


Mineral List


10 valid minerals.

Meteorite/Rock Types Recorded

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Regional Geology

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

Holocene
0 - 0.0117 Ma



ID: 696776
alluvium 38485

Age: Anthropocene (0 - 0.0117 Ma)

Description: Channel and flood plain alluvium; gravel, sand, silt, clay; may be locally calcreted

Comments: regolith; synthesis of multiple published descriptions

Lithology: Regolith

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). [5]

Paleoproterozoic
1600 - 2500 Ma



ID: 3187792
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Stratigraphic Name: Gascoyne Complex

Comments: Capricorn Orogen

Lithology: Amphibolite grade paragneiss

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. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

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Report of the Department of Mines for the State of Western Australia for the Year 1942 ..p76
Wai, O.M.(1970): The Metal Phase of Horse Creek, Mount Egerton, and Norton County Meteorites, Mineralogical Magazine (Dec 1970):37: 905-908
Mittlefehldt, D. W., McCoy, T. J., Goodrich, C. A. & Kracher, A. (1998) Non-chondritic meteorites from Asteroidal bodies. In: Planetary Materials (Papike, J. J., Editor): Chapter 4, 195 pages. Mineralogical Society of America: Washington, DC, USA.

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