The Meteoritical Bulletin, No. 100
Found: 2009 March
Mass: 42.6 g
complete stone recovered by Jim Labenne in March, 2009.
Metal-rich clast-laden vitric breccia consisting of glass and fine-grained
mineral debris (mostly pyroxenes, olivine, anorthite and metal), melt
breccia fragments and polycrystalline igneous clasts. Clast sizes to 3 mm.
Mineral clasts include anorthitic plagioclase, low-Ca
pyroxene, olivine, kamacitic and troilite. Lithic clasts include rare
basalts (composed of plagioclase and pyroxene) and troctolite (composed of
plagioclase and olivine). Metal grains are partially oxidized. Some olivine
grains are partially to totally altered by weathering. Veinlets filled with
alteration products are abundant.
Olivine (Fa20-37), plagioclase (An93-98), pigeonite
(Fs21-29Wo8-11), and augite (Fs6-8 Wo32-36).
Bulk composition: (R. Korotev, WUSL):
25% Al2O3, 8.0% FeO, 8.2% MgO, 1200 ppm Ni, 1.1 ppm
Sm, 89 ppb Ir, 0.5 ppm Th.
Achondrite (lunar, feldspathic breccia).
A total of 8.56 g is deposited at NHMD.