 This corundum band is contained within a broader phlogopite and pargasite-enriched alteration zone referred to as the Host Zone Alteration.The ruby mineralization at the Aappaluttoq prospect has been traced in drilling and surface exposures over a strike length of 135 metres and a vertical depth of 143 metres.The closely associated Aappaluttoq Deep Zone has now been traced in drilling over a strike length of 85 metres and continues to vertical depths of 70–143 metres below surface.