The Meteoritical Bulletin, No. 103
Mass: 15.6 g
Lunar meteorite (feldspathic breccia)
Purchased by Matt Morgan in 2013, reportedly found in Algeria.
characteristics: Single stone, complete, dome shaped,
remnants of brown-black fusion crust. Saw cut reveals a range of clast and
fragmental feldspar sizes set in dark fine grained
matrix, dark gray shock melt veins throughout.
Microprobe examination of a polished mount shows two main types of breccia:
1) cataclastic breccia with densely packed olivine, pyroxene and
plagioclase fragments and abundant vesiculated shock melt veins, 2)
feldspathic breccia with primarily fragmental plagioclase set in a very
fine-grained matrix. Chromite, ilmenite, zircon, phosphate, silica, and
Agee and N. Muttik, UNM).
Olivines are fairly uniformly Mg-rich, olivine Fa36.5±7.1,
Fe/Mn=99±10, n=31. Some plagioclase has relatively high albite content, An93.4±2.2Ab6.2±1.9Or0.4±0.3,
range An89.1-96.3, n=12. This specimen appears to have three
distinct clinopyroxene populations, likely representing at least three
lithologic types: 1) Mg-rich clinopyroxene, Fs32.8±12.3Wo18.6±8.0,
Fe/Mn=57±9, n=17; 2) Fe-rich clinopyroxene, Fs51.0±7.9Wo24.3±6.7,
Fe/Mn=72±5, n=15; 3) hedenbergite, Fs53.1Wo41.6,
Fe/Mn=89 + Fs-rich pigeonite, Fs81.0Wo13.0, Fe/Mn=63.
Achondrite (lunar meteorite). Feldspathic breccia.
Specimens: A total of
3.5 g, including a probe mount, is on deposit at UNM, MtMorgan holds the