Meteoritical Bulletin, No. 94, Meteoritics
& Planetary Science 43,
Mass: 50.4 g
(lunar, feldspathic breccia)
and physical characteristics: A 50.4 g nearly complete
stone was purchased in Erfoud, Morocco in January
2008. The aeolian-modified fusion crust is dark
gray to reddish-brown.
(T. Bunch and J. Wittke, NAU; Dolores Hill, UA):
Fragmental to melt-matrix breccia that contains an assortment of lunar
highland lithologies and Mare basalts and glasses. Highland components
analyzed by microprobe include cataclastic gabbro, troctolite, fragments of
granophyric intergrowths of K-feldspar, felsic glasses and silica. Mare
components include ophitic pigeonite and olivine basalts. Interior is very
fresh and lacks alteration veins.
Gabbro olivine is Fa31.7 (FeO/MnO = 99) and pigeonite is Fs25.7Wo9.3
(FeO/MnO = 53). Troctolite olivine is Fa22.3 (FeO/MnO = 80),
Ca-pyroxene is Fs22.1Wo17, chromite Cr/(Cr+Al) = 0.63, and granophyric K-feldspar is An14.5Or54.3
with BaO = 2.6 wt %. Mare ophitic pigeonite
basalt olivine is Fa36.7 (FeO/MnO = 106), pigeonite is Fs7.1Wo13.3
(FeO/MnO = 65) and ilmenite MgO = 5.2 wt %. Olivine basalt olivine is Fa36.2
(FeO/MnO = 94) and Ca-poor pyroxene is Fs32.1Wo13.3
(R. Korotev, WUSL):
Na2O = 0.476 wt %; Sc = 25.6 ppm; Cr = 1963 ppm; FeO = 12.72 wt
%; Ni = 150 ppm; Co = 42.4 ppm and Sr = 132 ppm.
Achondrite (lunar feldspathic breccia).
specimen: 5 g and one thin
section are on deposit at NAU and one thin
section and 0.3 g are on deposit at UA.
D. Pitt holds the main mass.