The Webb occurrence is located approximately 6 kilometres south-southeast of the eastern end of Chuchi Lake, 75 kilometres north of the community of Fort St. James.
The Webb showing area is underlain by the northwest-trending contact of the Upper Triassic Witch Lake Formation (Takla Group) on the west, and the Early Jurassic Chuchi Lake succession on the east. The Witch Lake rocks consist of volcaniclastic rocks and the Chuchi Lake rocks consist of coarse volcaniclastic rocks and pyroclastic volcanic rocks. Regional geology maps show the contact a few kilometres to the west of the Webb drill area.
The area of the Webb occurrence is underlain by dark-green sediments interlayered with light to dark green andesite and andesitic fragmental and crystal tuffs. This package is crosscut by quartz monzonite and feldspar porphyry dikes. A quartz monzonite stock, thought to be coeval with the Takla volcanics, intrudes the strata to the west. The area is covered, for the most part, by a thick blanket of overburden.
In 1990, Moondust Ventures Inc. carried out an exploration program on its Webb claims that consisted of airborne magnetics (680 kilometres) and very low frequency electromagnetics, ground magnetics, induced polarization surveying, soil geochemistry, geological mapping, and diamond drilling. Only the airborne survey was documented in assessment reports.
A 1991 drill program by Moondust consisted of five 778.2 BQ and NQ holes. Within the drilled area, chlorite and epidote alteration is prevalent and minor secondary potassium feldspar was noted locally. Mineralization consists of pyrite, pyrrhotite and minor chalcopyrite as disseminations and fracture fillings. Diamond drill hole 91-5 yielded 0.13 per cent copper over 15 metres (from 164 to 179 metres drill depth); a 3-metre section of this 15-metre interval yielded 0.34 per cent copper (Assessment Report 21495).
Serengeti Resources Inc. held the Choo property, which covered the Taylor, TT (MINFILE 093N 227) and Webb (MINFILE 093N 131) occurrences and the northern portion of the Mitzi claim group, since 2004. The Webb showing is located 2.8 kilometres east-northeast of the TT showing. In 2004, Serengeti Resources carried out a program of rock (6 samples), stream sediment (17 samples and soil (32 samples) sampling between October 4 to October 13. This work confirmed the copper, rock and soil anomalies reported by Noranda.
In 2007, on behalf of Serengeti, Peter E. Walcott and Associates conducted 11 kilometres of induced polarization and ground magnetic geophysical surveying over the Choo property. The survey entailed five north-south–trending lines, three on the eastern portion of the property and two on the western portion. A broad zone of high chargeability response, approximately 1200 metres wide, was observed trending across the east grid. Two shallow anomalous zones separated by a deeper zone occupied most of the two-line traverse in the west (Assessment Report 29850).
In 2009, Serengeti Resources Inc. acquired the Choo claims by staking as a result of a review of historical exploration carried out in the area that highlighted the potential for a porphyry copper ± gold deposit. In order to test for a covered porphyry target on the property, Serengeti financed a geochemical reconnaissance survey and a drill program. Fifty-four (54) mobile metal ion (MMI) and 54 B-horizon soil samples were collected and analyzed. A drill program conducted to follow up on geophysical targets and past drilling results consisted of two diamond drill holes totalling 592.53 metres.
In 2011, Serengeti Resources Inc. conducted an exploration program to complete geochemical, geological and geophysical surveys to test for glacial till–covered copper ± gold porphyry targets on the Choo property. From July to August 2011, a 23 line-kilometre induced polarization survey was completed and identified chargeability targets at each of the five targets (C1 to C5) indicating the presence of a sulphide system. Following this survey, from August to September 2011, Peter E. Walcott & Associates completed a 19.5 line-kilometre induced polarization geophysical survey using a 100-metre ‘a’ spacing. A further 3.4 line-kilometres of induced polarization surveying using a 200-metre ‘a’ spacing was completed over selected lines to survey deeper readings. In addition to the induced polarization survey, Serengeti geologists and samplers completed a geological reconnaissance survey and collected 551 Ah soil samples and 39 rock samples
In 2012, Serengeti Resources Inc. released the results of a drill program financed by Freeport-McMoRan of Canada Limited on the Tchentlo and Choo properties. On the Choo property, three very widely spaced holes (up to five kilometres apart) encountered gold anomalous intervals (1.53 grams per tonne over 4 metres, 0.55 gram per tonne over 8 metres, and 0.66 gram per tonne over 5 metres) at or near the contacts of andesite or feldspar porphyry dikes (Press Release - Serengeti Resources Inc., August 29, 2012).
