The first pieces of the Mundrabilla meteorite were found in 1911. In March of 1966, two large masses of about 8 and 11 tons were found by geologists R. Wison and A. Cooney and described under the name Mundrabilla. In 1979, two more large masses weighing totaling about 1640 kilograms were found about 20 km east of the 1966 location. Mundrabilla has a very low iridium content and very high troilite content and is designated an anomalous iron. The troilite is present in small nodules accounting for up to 35 % of the volume of the meteorite. The "knuckle-shape" of many individuals is a result of the selective ablation of troilite during atmospheric entry leaving knobby taenite crystals.