NWA 4884 Lunar Moon Breccia Meteorite .032g
.032 gram part slice of NWA 4884 is a gorgeous new lunar meteorite found in the Sahara Desert in early 2007. It consists of a single 42-gram, partially crusted stone and is not paired to any other lunar meteorites, but is quite similar to Antarctic meteorite QUE 94281, and both are mingled mare plus highlands breccias. NWA 4884 has large anorthositic clasts and abundant metal, most likely from ancient impactors that pummeled the lunar surface.
With such a low Total Known Weight, there are precious few slices to go around. Each slice has been highly polished on one side to display the beauty of this lunaite. This specimen comes with a color identification card from The Hupé Collection guaranteeing its authenticity.
Click here to view complete slice with large white anorthosite clast:
Link to Thin Section image in Cross Polarized Light (image measures 7mm wide):
Link to WashingtonUniversity in St. Louis website with photos and additional information:
Northwest Africa 4884
Find: July 2007
Achondrite (lunar, mingled basalt-rich breccia)
History: Purchased by Greg Hupé in July 2007 from a dealer in Tagounite, Morocco.
Physical characteristics: A single stone (42 g) partially covered by black fusion crust; interior slices show it to be a breccia composed of white, beige and light gray clasts in a dark gray matrix (see image).
Petrography: (A. Irving and S. Kuehner, UWS) Regolithic breccia composed of abundant angular mineral and lithic clasts in a sparse vesicular, glassy matrix. Mineral fragments include calcic plagioclase, pigeonite, augite, Ti-chromite, ilmenite (one with a tiny baddeleyite inclusion) and silica polymorph. Lithic clasts include several types of mare basalt (a coarse-grained example is composed of olivine+zoned pigeonite+calcic plagioclase+ilmenite+troilite), granophyric intergrowths of Fe-rich augite+fayalitic olivine+silica polymorph, a coarse grained dunitic or troctolitic rock containing a large metal grain (associated with rutile and secondary ilmenite), and a large “breccia-within-breccia” clast. Mare basalt clasts and debris are predominant over highlands lithologies.
Geochemistry: Olivine clasts (Fa37.0-37.7, FeO/MnO = 94-98), olivine in basalt clast (Fa87.9, FeO/MnO = 89), plagioclase (An92.4-95.3Or0.5-0.1), pigeonite host (Fs52.3Wo10.5, FeO/MnO = 65.2), augite lamella (Fs31.9Wo31.9, FeO/MnO = 60.3), pigeonite clast (Fs60.1Wo7.0, FeO/MnO = 71.1), augite clast (Fs17.2Wo36.9, FeO/MnO = 53.3). Bulk composition(R. Korotev, WUSL): FeO 13.7 wt.%, Sm 3.1 ppm, Th 0.9 ppm, Ir 3.4 ppb.
Classification: Achondrite (lunar, mingled basalt-rich breccia).
我們尚有些許的庫存 這種月球隕石非常新鮮 與美國阿波羅號取回的月岩相近