Meteoritical Bulletin, No. 93, Meteoritics
& Planetary Science 43,
Find: 2007 July
Mass: 42 g
(lunar, mingled basalt-rich breccia)
Purchased by Greg Hupé in July 2007 from a dealer in Tagounite,
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).
(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
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.
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.
Achondrite (lunar, mingled basalt-rich breccia).
Specimens: A total of 8.4 g of sample and one polished mount are
on deposit at UWS.
holds the main mass.