NWA 11271 (Microgabbroic Monomict Eucrite Breccia)

Several stones weighing a total of 315.41g were purchased out of Morocco in February of 2015. A sample of one of these stones was sent to Dr. Anthony Irving who determined the stone to be a Microgabbroic Monomict Eucrite Breccia with moderate shock and low weathering. I prepared several slices and left several smaller individuals intact. Slices come polished on one side and feature light eucritic clasts scattered about a dark matrix. This particular eucrite has a lunar look to it! Each slice will come in a quality labeled meteorite display box.

Petrography as follows:

Breccia consisting of closely-packed microgabbroic clasts with sparse matrix. Minerals are exsolved pigeonite, calcic plagioclase (exhibiting undulose extinction), silica polymorph, ilmenite, chromite, troilite and minor calcite. Orthopyroxene host (Fs59.7-62.6Wo6.1-2.1, FeO/MnO = 30-32, N = 3), clinopyroxene exsolution lamellae (Fs28.0-28.3Wo42.9-42.4, FeO/MnO = 34, N = 2), plagioclase (An88.3-90.3Or0.7, N = 2).

Meteoritical Bulletin entry can be found here.

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