Type: Iron Octahedrite; Class IAB Ungrouped
Specimens of the fall found in 1911 on Australia's Nullarbor Plain, 26 kilometers northeast of Mundrabilla Siding on the Trans-Australian railway. Latitude 30.78S; 127.55 E.
This meteorite is considered part of a duo of meteorites with very similar composition. The other member of the "Mundrabilla duo" is the Waterville meteorite found in 1917 in Washington state. The Mundrabilla meteorite has up to 25% by volume of inclusions of iron sulphide (troilite) and iron chromium sulphide (daubreelite) that melt easily during the incandescent phase of atmospheric entry frequently giving the Mundrabilla specimens characteristic regmaglypt indentations.

Structural Class: Medium octahedrite, Om, Widmanstätten bandwidth .6 mm.
Chemical class: Group IAB, 7.5% Nickel, 0.49% Cobalt, 241 ppm Chromium, 125 ppm Copper, 15.4 ppm Arsenic, 1.643 ppm Gold, 58.3 ppm Gallium, 196 ppm Germanium, 0.9 ppm Iridium.