The Baldy (Wolfenden) occurrence is located near the north end of a ridge south of Frances Creek and separating Isaac and Napoleon creeks.
The area is underlain by black slate (argillite) and a narrow band of limestone of the upper Proterozoic Horsethief Creek Group, which overlies conglomerate of the upper Proterozoic Toby Formation (Windermere Supergroup). Well-developed cleavage is present in the slate, having an attitude of 135 degrees and dipping 33 degrees west. Bedding is overturned in many of the fault panels in this region. The limestone is bluish-grey on a fresh surface. Bedding is reported to strike 154 degrees and dip 62 degrees west. Joints with an attitude of 148 degrees and dipping 51 degrees to the southwest are present in the limestone. At the showing, the limestone is cut by a fault paralleling the strike of the units and dipping 30 degrees south.
Locally, copper mineralization occurs over approximately 3.3 metres between the contact of the limestone and the slate and a bedding fault within the formation. The fault is characterized by brecciation of the limestone and by displacement of minor units within the limestone. The fault zone dips 40 to 45 degrees to the west. Malachite and azurite mineralization is confined to the limestone unit and occurs as a stain on the limestone and within quartz blebs and veinlets. Minor chalcopyrite and pyrite are also associated with quartz blebs and veinlets.
In 1966, a chip sample across the zone yielded 5.90 per cent copper over 3.3 metres (Property File - A.C.A Howe [1966-10-20]: Report on the Westgate Mines Ltd. Properties in the Golden Mining Division). In 1971, a 91-centimetre channel sample assayed 1.12 per cent copper (Assessment Report 3351).
The area has been explored since the early 1900‘s with at least two short adits, up to 4.5 metres long, and a number of trenches. In 1966, Westgate Mines prospected and sampled the area. In 1968, Silver Eagle Explorations held the property as the Baldy and Fran group of claims. They commissioned Robert Franz to conduct a photo-geological and photo-grammetric study of the claim area. A field check of data was completed. Maps indicate copper and silver mineralization at the showing site. Prior to the field season in 1971, Penarroya Canada Limited entered into an option agreement for the Baldy group of claims with Lloyd Wilder, Winston Wolfenden and W.C. Jones. In 1971, Penarroya conducted surface mapping, a geochemical soil and silt survey and 122 metres of trenching. Two old caved adits were located in 1971, which indicated that the property had been investigated previously. A 1972 prospectus by Purcell Development Co. Ltd. reported that Wilder, Wolfenden and Jones sold the rights of the Penarroya option to Purcell. However, Penarroya dropped the option soon after completing their field work. Purcell indicated their intention to work the property in 1972 but nothing is recorded to indicate that they did so.
