In certain materials, notably with the spinel structure, orbital ordering can result in the formation of a ground state with electrons delocalising between small numbers of adjacent cations, called ?orbital molecules?. Two new spinels, GaV2O4 (a = 8.3130(5) Å) and Li0.5Ga0.5V2O4 (a = 8.3129(1) Å), have recently been synthesised by high temperature solid-state reactions as candidate orbital molecule materials. GaV2O4 is paramagnetic down to 4 K, but a sharp magnetic ordering transition is observed at 15 K for Li0.5Ga0.5V2O4.We request 2 days on HRPD to study the crystal and magnetic structures of GaV2O4 and Li0.5Ga0.5V2O4, over the temperature range 4-300 K. Neutrons are required to refine cation occupancies and observe magnetic order, and the high resolution of HRPD is needed to observe any subtle superstructures associated with orbital/spin orders.