|Basic information||Name: Bunburra Rockhole|
This is an OFFICIAL meteorite name.
Abbreviation: There is no official abbreviation for this meteorite.
Observed fall: Yes
Year fell: 2007
Mass: 324 g
This is 1 of 221 approved meteorites classified as Eucrite. [show all]
Search for other: Achondrites, Eucrites, and HED achondrites
Approved 13 Feb 2009|
Revised 17 Apr 2009: release coords
Writeup from MB 95:
Bunburra Rockhole 31°21.0′S, 129°11.4′E
Nullarbor Region, South Australia, Australia
Fall: 21 July 2007 04:43:56 local time (UT + 9:30)
History: A bright fireball was recorded over southwestern Australia by observatories of the Desert Fireball Network. A fall position was pinpointed by triangulation, and a search was mounted. Fragments were recovered within 100 m of the predicted fall site.
Physical characteristics: Two specimens with a total mass 324 grams were recovered: one 150 g fragment; one 174 g fragment. The smaller is an oriented stone, discus-shaped, and completely fusion crusted. The larger is ~90% fusion crusted, and more irregular in form. The small internal area that is exposed on the second stone is pale grey in color. Fusion crust on both stones is bright, shiny, and fresh.
Petrography (G. K. Benedix NHM; P. A. Bland ICL): The meteorite is a basaltic eucrite monomict breccia with the majority of the sample exhibiting subophitic texture. Fine-grained clasts are irregularly distributed throughout the sample. The sample contains mm-sized orthopyroxene and plagioclase. Low-Ca pyroxene contains thin exsolution lamellae of Ca-rich pyroxene. The meteorite also contains silica and minor ilmenite.
Mineral compositions: Pyroxene, Fs62.5Wo3.6 (Fe/Mn-31.1) with augite (Fs27.7Wo43.0) lamellae; plagioclase, An84.1 to An88.2.
Classification: Achondrite (eucrite) minimal shock and no weathering.
Type specimens: Both stones (main mass) and one thin section are on deposit at WAM.
ICL: Impacts and Astromaterials Research Centre, Department of Earth Science and Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, UK (institutional address)
NHM: Department of Mineralogy, The Natural History Museum, Cromwell Road, London SW7 5BD, UK (institutional address)
WAM: Western Australian Museum, Francis Street, Perth, Western Australia 6000, Australia (institutional address)
|References:||Published in Meteoritical Bulletin, no. 95, MAPS 44, 429-462 (2009)|
This is 1 of 197 approved meteorites from South Australia, Australia (plus 4 impact craters)
This is 1 of 664 approved meteorites from Australia (plus 44 unapproved names) (plus 26 impact craters)
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