The ability to differentiate between iron ore types is highly desirable in the iron ore industry. The ore type may affect bulk handling, dust generation, impurity levels, pelletising, blast furnace performance and ultimately ore marketability. Measuring of iron ore types, whether real-time or ‘offline’, may provide opportunities to lift the productivity of iron ore mining. For instance, on-belt ore sorting measures the ore directly on a conveyor belt, using a method that discriminates between high-grade and low-grade material. This enables the overall grade to be upgraded by discarding the low-grade fraction. For iron ore applications, sorting may also be based on problematic ore types containing, for example, shales, high manganese, or other deleterious elements at high levels. Sorting problematic ore types prior to stockpile formation can mitigate the loss of ore value that would otherwise result during the stockpiling process. For ore sorting applications, measurements must be non-contact and be representative of the ore being measured. The ore measurement method must also be scalable—both in size, from laboratory testing set-ups to large on-belt sorting equipment, and in time to ultimately enable real-time operation. Magnetoimpedance is a magnetic property of iron ore that shows promise for ore sorting techniques. Magnetoimpedance refers to two effects; the change in the sample electrical resistivity due to an applied magnetic field which is known as magnetoresistance, and the change in magnetic susceptibility which is typically influenced by magnetic hysteresis. CSIRO has developed a new non contact laboratory-based measurement system that measures magnetoimpedance. This new method allows for the bulk volume of the sample to be measured, providing a representative characterisation of the material and eliminating the need for surface preparation while accommodating uneven or rough surfaces. This method is suitable for measurement of granular materials for particle sizes between 0.1–200 mm, making it potentially useful for hard rock mining and mineral processing applications.