The Royal and Peerless showings are located 4 kilometres north- northwest of Vernon, between Swan and Okanagan Lakes.
In this area, west of the Okanagan Valley fault zone, volcanic and sedimentary rocks of the Devonian to Triassic Harper Ranch Group are unconformably overlain by Upper Triassic to Lower Jurassic Nicola Group sedimentary and volcanic rocks. These units are intruded by Middle Jurassic granitic rocks informally named the Terrace Creek batholith. Patches of Eocene Penticton Group volcanic rocks overlie the older rocks.
A quartz vein in Nicola volcanic rocks hosts silver, zinc and lead mineralization. The vein carries disseminations of sphalerite and galena.
In 1942 and 1952, 2 shipments totalling 5 tonnes (4 from the Royal and 1 from the Peerless) produced 2,829 grams of silver, 89 kilograms of lead and 278 kilograms of zinc.