Antarctic Search for Meteorites (ANSMET) Search this
Place:
Antarctica
Collection Date:
1987
Notes:
# NASA data for LEW 87271 Weathering: B Fracturing: A Fa: 0-24 mol % Fs: 0-5 mol %
This small smooth fragment is covered with black fractured fusion crust except for one weathered surface devoid of fusion crust. The interior is black to brownish in color with small <1 mm inclusions. Salt deposits are abundant next to the fusion crust.
The section shows sparse chondrules, up to 0.6 mm across, and small mineral grains in a dark brown to black matrix. Microprobe analyses show most olivine near Mg₂SiO₄ in composition, but ranging up to Fa₂₄ (mean composition is Fa₄); a little pyroxene, near MgSiO₃, is present. The meteorite is a C2 chondrite, but does not appear to belong to the LEW87001 group.
