The Rupert North showing is located south of Buchan Creek. Two blast pits over a mineralized shear zone, quartz veins, and altered rhyolite dikes occur about 100 metres apart.
The area is underlain by gneisses and schists of the Middle Devonian gniessic assemblage thought to be related to the Yukon-Tanana terrane. Contact with granodiorite of the Lower Jurassic Aishihik Plutonic Suite occurs a few hundred metres to the east. Tertiary rocks of the Hyder-Sloko Plutonic Suite, consisting of andesite and basalt dikes, intrude the older units. The Llewellyn fault is 10 kilometres to the northeast.
A 2- to 20-centimetre-wide quartz vein within a 0.5 metre shear zone is vuggy, rusty, azurite-malachite stained, and contains less than 1 per cent each of chalcopyrite, pyrite, and galena. Adjacent to the shear zone, the hostrock contains a stockwork of unmineralized quartz veins.
A 0.5 metre chip sample (343962) across the veined and clay-altered schist/gneiss from the south pit assayed 5.4 grams per tonne gold and 30 grams per tonne silver (Assessment Report 19827).
The north pit exposes a weakly developed stockwork of quartz veins, containing up to 2 per cent pyrite and galena within a rhyolite dike. A 1 metre chip sample (343961) of this material assayed 0.005 grams per tonne gold and 4 grams per tonne silver (Assessment Report 19827).
These veins may represent the northern extension of the Rupert vein system (104M 008).
The Rupert showings were probably discovered at around the turn of the century. Trenching, reported in 1913, located 5 mineralized quartz veins (104M 008). The Fee Group was staked to cover these showings in 1979 by United Keno Hill Mines Limited. They carried out extensive geological and geochemical surveys. In 1986, Rise Resources optioned the Ice 1 claim and the 10 crown grants comprising the Rupert Group. Rise Resources confirmed the soil anomalies discovered by United Keno Hill Mines Ltd. Placer Dome optioned the property in 1989 and conducted mapping, geochemical sampling, and geophysical surveys. In 1990, trenching was done on this showing.
Mapping, rock -, soil -, and silt sampling at several of the Rupert Showings and integration with the latest 2007-2008 airborne geophysics has demonstrated a probable structural control on the mineralization there. The analysis suggests a strong association of mineral occurrences with north-northwest-trending magnetic lineations that clearly transect granodiorite/gneiss contacts at multiple locations.
The 2011 airborne magnetic and EM geophysical survey over the Titan property indicated a string of airborne magnetic and EM geophysical anomalies that can tentatively be traced along strike from the Buchan showing area (104M 035), as far as 2 kilometres to the south-southeast, where the geophysical anomaly lineament also overlaps with the historical Rupert I showing (104M 008).
In 2013, a single day field program conducted by Eagle Plains produced 92 soil samples and four rock samples for analysis. Soil samples highlighted a potential parallel vein system to the east of the White Moose trend, extending the historic anomaly consisting of bismuth, silver, copper, zinc, lead, and to a lesser extent, gold (Assessment Report 34573). Soil sampling in the vicinity of the White Moose-Shaft occurrence (104M 012) returned interesting results and expanded on the results from sampling in 2007. The mineralization at the showing itself seems to be limited as sampling over the occurrence only produced a single point anomaly for lead, copper, silver, zinc, and bismuth. The soil samples collected to the north of the Buchan Creek showing (104M 035) extended the soil anomaly to the north for lead, gold, antimony, and silver: all of which are elements closely associated with the mineralization observed at the Buchan Creek showing. With the inclusion of the new samples, the anomaly now extends north of the showing for 630 metres and a width-range of 50 to 220 metres.
In 2017 DeCoors Mining Corp. conducted a single day field program with the intent of locating previously reported mineralized veins and conducting traverses to prospect for new vein systems (Assessment Report 37317). A total of 20 readings were taken in the field using a Niton portable XRF analyzer. The field day was successful in locating additional quartz veins, which appear unrelated to the mineralized vein system at the Buchan showing. Several samples were also collected in the Rupert-North occurrence area (104M 036) and the Fee Glacier area (104M 037) (Figure 13, Assessment Report 37317).
In 2018, a four-man crew collected a total of seven rock samples from different locations along the quartz vein exposure of the Buchan Creek showing. Samples consisted of white quartz with varying quantities of disseminated to semi-massive galena, chalcopyrite, pyrite, and minor amounts of malachite and azurite. Sample gold values range from 0.39 to 11.7 grams per tonne, averaging 3.91 grams per tonne; silver values range from 22.8 to greater than 100 grams per tonne; copper values from 0.00296 to 0.8139 per cent; lead values from 0.12 to greater than 1 per cent; and zinc from 0.0022 to 0.065 per cent (Assessment Report 38252). Tellurium and antimony values were elevated, in most samples, ranging up to more than 0.1 per cent tellurium and 0.2 per cent antimony.
Refer to the Titan prospect (104M 089) for related details of the Titan property, of which the Rupert showings are part of.
