The showings are located near the northern bank of the Koksilah River, approximately 7 kilometres west- south west of Cobble Hill.
The area is underlain by the Mississippian to Pennsylvanian Fourth Lake Formation, Buttle Lake Group. This unit is overlain locally by limestone, bedded chert and cherty tuff of the Upper Pennsylvanian to Lower Permian Mount Mark Formation, Buttle Lake Group (formerly the Buttle Lake Formation). A granodioritic stock of the Early to Middle Jurassic Island Plutonic Suite (formerly known as the Island Intrusions) disrupts the regional stratigraphy.
The W.A.E showing, worked around 1903, is located on the bank of the Koksilah River. A quartz vein occurs at the contact of chert and limestone and is reported to carry "zinc and copper". About 180 metres distant, along the trend of the vein, a dyke of volcanic rock is exposed, lying parallel and close to the vein. Only a little quartz occurs in this exposure, the copper being found in garnetite with actinolite and epidote.
The Fallside showing was worked in the early 1950's, also occurs near the Koksilah River, near an old adit. It is possible that these showings are the same. Greenstone is reported to be the most abundant rock in the area; marble is the most abundant rock near the showings. Intrusive into the marble and greenstone is a granitic mass and several minor bodies, the latter either dykes or sills consisting of feldspar-hornblende porphyry. Skarn minerals consisting of garnet, epidote, and diopside are found in the marble, greenstone and granodiorite. Associated with the skarn are small amounts of magnetite, pyrite and pyrrhotite, and minor amounts of sphalerite and chalcopyrite. Quartz has been introduced along the zones and manganese stain is common near them. One zone is 2 metres wide but the others are less. One of several samples taken contained 1.9 per cent zinc; all samples assayed nil in gold and silver (Minister of Mines Annual Report 1952, page 214).
In 1983 through 1985, Reward Resources completed programs of prospecting, geochemical sampling and ground geophysical surveys on the Independence, Koksilah, Pacific Star and Western mineral claims. In 1986, Hollycroft and Nexus resources completed a program of geological mapping and rock sampling on the Sil claims.
