232 SOLAR SYSTEM/Meteorites Figure The distribution of the Mundrabilla irons on the Nullarbor Plain, Western Australia (rediscovered 1964 onwards) showing the typical dispersion ellipse Below left: the M1 mass (est 11 tonnes), as found, showing the space capsule shape with striations on anterior surface in atmosphere descent: also the curved face where the M2 mass separated Below right, the M2 mass (est tonnes), showing the 10 cm pad of iron shale below, the product of a million years weathering by surface agents since fall (from McCall 1999, reproduced with permission of Palgrave Macmillan)