The Wedge copper showing occurs along Pesika Creek, an area of geologically complex faulted terrane. A succession of Lower Cambrian orthoquartzite, quartzose dolomite, dolomite, and shale are unconformably overlain by uniformly-bedded, grey weathering, nodular limestone of Upper Cambrian Lynx Formation. Cambrian to Ordovician Kechika Group argillaceous limestone conformably overlies the Lynx Formation.
The Wedge showing consists of a large quartz vein hosting variable amounts of pyrite, chalcopyrite and malachite. The vein is over 1525 metres long, and in places is over 30 metres in width. Over much of the strike length, the vein occurs as a series of narrow reticulating veins that have completely or partly silicified the surrounding rock. Occasional ankerite veins have also been noted in association with narrow quartz veins. The host rock is reported to be fine-grained, grey limestone, probably part of the Lynx Formation.
More recent work, in 2008, described the Wedge occurrence as a large structure cutting through phyllitic rocks, occurring as a composite mesothermal to epithermal quartz vein deposit surrounded by hydrothermal brecciation and laminated veining. The Wedge structure was mapped for just over 1km and is open to the north and south. To the north it can clearly be seen to continue, outlined by a strong vegetation anomaly. The Wedge structure strikes approximately 350 degrees and is sub parallel to the phyllitic cleavage; however, the large composite quartz veins (0.5 to 6 metres wide) are oriented at approximately 320 degrees. The structure is not exposed at every location however it is exposed for about 80 per cent of the mapped length and appears to be very continuous. The massive quartz zone pinches and swells between about 5 metres to an approximately 20 metres wide. Within the massive quartz there is little or no copper and iron sulfide mineralization. The main zone of mineralization is the strongly altered, brecciated and veined domains along the western side of the main quartz structure.
Work History
The Wedge and Protection groups of claims were located on the showings in about 1930 by Mort Teare and Associates of Prince George. The showings were prospected for several years by means of open cuts and short adits. The showings were restaked in 1941 by E.F. Williams, Mort Teare, and associates as the Copper King group of 6 claims. In 1951 the property consisted of the Copper King Nos. 1 to 8 claims held by Carl Noel, and the Extension Nos. 1 and 2 claims held by Mort Teare. Exploration work to this date consisted of open cuts, and some 36.6 metres of drifts and crosscuts in 3 adits.
In 2003, Mr. Benjamin Ainsworth completed a technical report in the deposit for Pursuit Pty Ltd (Pursuit). This involved a site visit and the collection and analysis of two stream sediment samples and eight rock chip samples. Select samples are reported to have assayed greater than 6 per cent copper with some values in silver and gold (Assessment Report 30107). This resulted in a NI43-101 technical report for the “Copper King” property.
In 2005, Derek Moore completed minor rock sampling and prospecting on the Copper King property which contained the Wedge vein. Two undescribed samples (PRK001 and PRK002) assayed 4.59 and 1.21 per cent copper, respectively (Assessment Report 28246).
In 2008, Wedge Resources Limited held an option on the Wedge Pesika claims of the Wedge property, owned by Derek Moore. The collected 59 rock samples and conducted geological mapping. The historic trenches and adit were located and mapped first, identifying the major contacts which were then followed by locating natural outcrops and clearing the thin soils and moss for exposure. The sampling consisted of 1 metre channel/chip sampling at a uniform height and where possible in 1 metre lengths. Sporadic copper mineralization was identified along the whole length, approximately 1 kilometre, in the quartz breccia and veined western contact with the country rock yielding from 0.2 to 1.98 per cent copper (Assessment Report 30107). Also at this time, sampling of the north wall of the adit yielded 0.35 per cent copper over 1 metre (Assessment Report 30107).
