Name: MacAlpine Hills 02747 This is an OFFICIAL meteorite name. Abbreviation: MAC 02747 Observed fall: No Year found: 2002 Country: Antarctica [Collected by US Antarctic Search for Meteorites program (ANSMET)] Mass: 140.7 g
Macroscopic Description: Cecilia Satterwhite
The exterior is covered with black/brown fusion crust over 60% of its surface. It is heavily oxidized and fractures are visible. The interior is black with rusty brown areas and minor metal is visible. Inclusions are mm sized and range in color from white to gray.
Thin Section (,2) Description: Linda Welzenbach, Tim McCoy
Cross-Polarized Light
Plane-Polarized Light
The section shows an aggregate of distinct chondrules (up to 1 mm), chondrule fragments, and pyroxene grains in a matrix of metal, schreibersite, troilite, daubreelite and alabandite. Metal grains often contain euhedral pyroxene laths. Weathering is modest, with staining of some enstatite grains and minor alteration of metal and sulfides. Microprobe analyses show the pyroxene is Fs1-4 and metal contains very low concentrations of Si (~0.3 wt.%). The meteorite is an enstatite chondrite, probably an EL4.
140.7 g
