Bulletin, No. 98, Meteoritics
& Planetary Science 45,
Found: 10 Apr 2008
Mass: 128.8 g
(feldspathic melt breccia)
One stone was found by Luc Labenne in the desert at night.
The 128.8-g meteorite lacks an obvious fusion crust. The interior consists of
a gray, vesicular (up to 1.2 mm vesicles) melt matrix with rounded clasts
stained red by hematite. Many vesicles are filled with terrestrial
alteration products, including calcite, Ca-sulfate, and celestite.
(R. Zeigler, WUSL)
Melt matrix dominated by plagioclase (average: An96.7Or0.2)
with intergrown of pigeonite (average Fs50Wo27; Fe/Mn
= 57), augite (Fs60Wo27; Fe/Mn = 48), and olivine (Fo61;
Fe/Mn = 102) in an apparent poikilitic texture. Also present within the
matrix are small grains of troilite, Cr,Ti,Fe
spinel (19 wt% TiO2, 25 wt% Cr2O3 , 23 wt%
FeO), and ilmenite (5 wt% MgO, 1.5 wt% Cr2O3), the latter
two often intergrown. There are a few plagioclase clasts (typically 0.2 mm,
up to ~1 mm) and a few smaller olivine and pyroxene clasts. Large veins of
partially devitrified shock melt occur. Average composition of the
shock-melt vein: 43.7% SiO2, 0.24% TiO2, 29.7% Al2O3,
4.3% FeO, 0.07% MnO (Fe/Mn = 63), 4.0% MgO (Mg´ = 63), 16.8% CaO, 0.32 wt%
Na2O, and 0.03 wt% K2O.
Bulk Chemistry: (R. Korotev, WUSL): 0.32% Na2O,
4.1% FeO, 7.9 ppm Sc, 140 ppm Ni, 1.2 ppm Sm.
Achondrite (lunar, impact-melt breccia).
20.1 g are on deposit at WUSL, the main mass
is held by Labenne.