Name: MacAlpine Hills 02703 This is an OFFICIAL meteorite name. Abbreviation: MAC 02703 Observed fall: No Year found: 2002 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 19.3 g
Macroscopic Description: Kathleen McBride
Shiny, black fusion crust covers ~50% of the exterior. Some areas actually look like they are wet. Interior is a concrete gray matrix with numerous clasts of various shapes, sizes and colors.
Thin Section (,4) Description: Tim McCoy, Linda Welzenbach
Plane-Polarized Light
Cross-Polarized Light
The section shows a groundmass of comminuted, compositionally zoned pyroxene (up to 3 mm) and plagioclase with fine- to coarse-grained basaltic clasts ranging up to 1 mm. Most of the pyroxene is orthopyroxene with compositions ranging from Fs26-40Wo2-3 (Fe/Mn ~ 30), a single augite of Fs19Wo43 and plagioclase An74-94. The meteorite is a howardite.
19.3 g
