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Yilmia meteorite, Kambalda, Coolgardie Shire, Western Australia, Australia

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Latitude & Longitude (WGS84): 31° 11' 30'' South , 121° 32' 0'' East
Latitude & Longitude (decimal): -31.1916666667, 121.533333333


Enstatite Chondrite, low-iron [EL6; S2]
1969 find, 40 kg, weathered


A crater with numerous fragments around a depression and a second, larger mass found 2 years later 400 meters away provided Australian geologists with the second largest known EL ( low-iron) Enstatite chondrite. While weathering is an issue, the uneven nature of the weathering has permitted a rather complete description of the meteorite including some detailed descriptions of very reduced phases found mostly in the Enstatite meteorite clan. Enstatite (mostly in well-defined Enstatite-rich chondrules, admixed with minor Silica) constitute ~ 60 wt.% of the meteorite. The other important components are Metal (~20 wt.% ), Plagioclase (~9 wt.%), and Troilite (~ 6 wt.% ). According to Buseck and Holdsworth (1972) the meteorite is ‘unique’ among Enstatite Chondrites in complexity, abundance of Taenite, and diversity of zincian materials and minor sulfides.

Mineral List


11 valid minerals.

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References

Clarke, R. S., Jr. [Ed.] (1972) Meteoritical Bulletin, no. 51, Meteoritics 7 (2): 215-232. (Jun 1972)

Buseck, P. R. & Holdsworth, E. F. (1972) Mineralogy and Petrology of the Yilmia Enstatite Chondrite, Meteoritics 7 (4): p. 429. (Dec 1972)

Buseck, P. R. & Holdsworth, E. F. (1973) A new enstatite chondrite from Yilmia, Western Australia. Meteoritics 8(1): p. 23 (March 1973)

Brearley, A. J. & Jones, R. H. (1998): Chondritic Meteorites. In: Planetary Materials (Papike, J. J., Editor): Chapter 3, 398 pages. Mineralogical Society of America: Washington, DC, USA.

Grady, M. M. (2000). Catalogue of Meteorites (5/e). Cambridge University Press: Cambridge, New York, Oakleigh, Madrid, Cape Town. 690 pages.

Mineral and/or Locality  
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