|Northwest Africa 6148|
|Basic information||Name: Northwest Africa 6148|
This is an OFFICIAL meteorite name.
Abbreviation: NWA 6148
Observed fall: No
Year found: 2009
Country: (Northwest Africa)
Mass: 270 g
This is 1 of 19 approved meteorites classified as Martian (nakhlite). [show all]
Search for other: Martian meteorites
|Comments:||Approved 9 Mar 2013|
Writeup from MB 102:
Northwest Africa 6148 (NWA 6148)
Classification: Martian meteorite (Nakhlite)
History: Two stones that fit together (total 270 g) were purchased in Erfoud, Morocco, in 2009 by A. Aaronson.
Physical characteristics: Desert wind-ablated with little fusion crust, very friable.
Petrography: (T. Bunch and J. Wittke, NAU): Millimeter-sized euhedral augite and olivine (relative proportions, 85:15) set in a glassy mesostasis of dendritic pyroxenes, acicular Ti-magnetite, and small grains of silica, feldspar, and merrillite. Olivine and augite are strongly zoned. Weathering and shock are both low.
Geochemistry: Augite: cores, Fs23.2Wo42 (Fe/Mn=34); rims to Fa41.5Wo38. Olivine: cores, Fa64.5 (a few cores are more magnesian at Fa58) (Fe/Mn=45); rims to Fa74.5; mesostasis feldspar, An12.3-16.7Or5-12.
Classification: Martian (nakhlite). Possibly paired with NWA 5790.
Specimens: 20.1 g and one polished thin section are on deposit at UWB. The remaining material is held by Mr. P. Mani.
NAU: Geology, Bldg 12
Northern Arizona University, Flagstaff, AZ 86011, United States; Website (institutional address; updated 12 Apr 2012)
UWB: University of Washington, Box 353010 Seattle, WA 98195, United States (institutional address; updated 27 Jul 2012)
Aaronson: Sahara Overland Ltd., Harhora, Temara, 12000, Morocco (private address; updated 3 Jan 2010)
|References:||Published in Meteoritical Bulletin, no. 102, MAPS 50, 1662, September 2015|
This is 1 of 5735 approved meteorites from (Northwest Africa) (plus 2073 unapproved names)
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