The Mill showings are located 1.8 kilometres northwest of Darfield and 73 kilometres north of Kamloops, west of the North Thompson River and Highway 5. They are easily accessible on a secondary road and tertiary bush roads.
Five alteration zones containing epithermal vein quartz and silicified breccia have been mapped on the Mill claims (Assessment Report 23913). They are hosted in eastern marginal phases of the granodioritic Triassic to Jurassic Thuya batholith. The mineralized zones are generally crumbly, limonitic and variably propylitically or argillically altered. They trend north to north-northwest and appear to dip shallowly to moderately to the west. Individual quartz veins are up to 30 centimetres thick and vary in colour from translucent white to grey and flinty. Chalcedonic microveinlets, breccia and stockwork zones are also common. Needles of marcasite and fluorite are accessory minerals.
The five zones are numbered from A to E. The A zone is the easternmost and consists of a moderate stockwork of quartz veinlets and some grey chalcedonic quartz veins up to 25 centimetres thick. Fine pyrite is locally abundant in one of the quartz veins. The veins and stockworks occur within a zone of fractured, limonitic granodiorite that is at least 10 metres wide. The B zone is located 100 metres to the west and hosts a 65 centimetre grey, pyritic chalcedonic vein with a 30 degree dip to the northwest. The C zone is a further 100 metres to the west, consisting of grey chalcedonic, pyritic quartz and local silicified pyritic breccia. The D zone is a further 100 metres to the west and consists of light green silicified breccia. It is about 40 metres wide, is relatively low in sulphide minerals and exhibits characteristics typical of a silicified cap or sinter. The E zone is a further 200 metres to the west and is a 150 metre wide zone of recessive, limonitic, fractured and altered granodiorite with scattered small veins of grey chalcedonic quartz. The highest gold assay obtained to date is a grab sample from the E zone which yielded a value of 4960 ppb (Assessment Report 23913). An outlier of basalt from the Eocene Skull Hill Formation (Kamloops Group) outcrops 100 metres east on A zone.
The Thuya batholith consists of granodiorite, diorite and monzodiorite. On its eastern margin it is in contact with dioritic and gabbroic rocks of the Triassic to Jurassic Dum Lake Intrusive Complex and metasedimentary rocks of the late Paleozoic Harper Ranch Group. The Dum Lake complex comprises mafic and ultramafic rocks believed to constitute an Alaskan-type intrusive complex. Thuya rocks are intrusive into the metasedimentary rocks of the Harper Ranch Group which include limestones, siltstones, shales, volcaniclastic sandstones and local volcanic rocks (Fieldwork 2000). Volcanic rocks of the Eocene Skull Hill Formation composed of dacite, trachyte, basalt, andesite, rhyolite and related breccias unconformably overlie the metasedimentary and intrusive rocks (Geological Survey of Canada Memoir 363).
No work is known to have been undertaken on the property until 1994, when Eighty-Eight Resources Limited (Assessment Report 23913) discovered the showings in a regional prospecting program and completed a program of linecutting (12.5 kilometres), VLF-EM surveying (11.7 kilometres), geological mapping and lithogeochemical sampling (66 samples).
