Name: MacAlpine Hills 02917 This is an OFFICIAL meteorite name. Abbreviation: MAC 02917 Observed fall: No Year found: 2002 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 222 g
Macroscopic Description: Cecilia Satterwhite
Black fusion crust covers 90% of the exterior. The surface is pitted and has oxidation haloes. The interior is dark gray to black with areas of heavy oxidation. Some metal is visible and inclusions are abundant. Inclusions range in size from 1-5 mm and are white and cream in color.
Thin Section (,2) Description: Linda Welzenbach, Tim McCoy
Cross-Polarized Light
Plane-Polarized Light
The section exhibits numerous small, well-defined chondrules (up to 2 mm) in a black matrix of fine-grained silicates, metal and troilite. Weak shock effects are present. Polysynthetically twinned pyroxene is extremely abundant. The meteorite is moderately weathered. Silicates are unequilibrated; olivines range from Fa9-27 and pyroxenes from Fs2-24. The meteorites are L3 chondrites (estimated subtype 3.7).