The Pyrrhotite Creek South showing is underlain by a Middle to Late Triassic dioritic pluton emplaced in Upper Triassic marine and sedimentary rock of the Stuhini Group.
Quartz diorite and granodiorite formed cliffs exhibiting weak propylitic alteration with minor pyrite and trace chalcopyrite in narrow bands and veins. A wide slope of talus, boulders and grass was crossed to the base of high cliffs in a cirque toward the top of the peak. Gossanous rock at the head of the cirque were sampled consisting of pervasive sheared and brecciated quartz diorite with quartz-carbonate veining, limonite stained, 2 per cent magnetite and 1 to 2 per cent disseminated pyrite-chalcopyrite-arsenopyrite and patchy malachite stain. Oxidation and sericite-chlorite coatings occurred along fracture faces in the shear zone.
In the area of Pyrrhotite Creek South, a total of 42 soil samples and 10 rock samples were collected in 2018 by Garibaldi Resources. Mapping was also completed. Pyrrhotite Creek South borders Prosper Gold Corp’s Pyrrhotite Creek prospect to the south and these samples were run along the boundary to examine for continuation of copper mineralization. Soil sample results were low. Chalcopyrite mineralization and trace malachite staining were observed in the field.
In 2018, Garibaldi Resources collected 10 rock samples at Pyrrhotite Creek South. These averaged 0.11 per cent copper with a high of 0.76 per cent copper (Assessment Report 37794).
Work History
Reports of first discovered copper mineralization in the Sheslay and Hackett river areas date back to the1950’s. From the 1950’s to the 1970’s much of the exploration was focused north of the Grizzly Property on the Star Property, formerly Copper Creek, with less exploration completed on the current Grizzly property.
From the 1960’s to 1980’s work on the Grizzly Property was focused on the west portion in areas known as West Kaketsa and Grizzly West. Kennecott Exploration, Skyline Exploration and Cobre Exploration completed soil geochemical, ground IP, and airborne magnetic surveys throughout the 1960’s and 1970’s which discovered four copper showings known as Kid, Grizzly, Grizzly West and West Kaketsa.
In 1974 Brascan Resources and Ducanex Resources optioned the Project and completed three shallow diamond drill holes at the Grizzly West prospect, intersecting strong potassic alteration and weak copper mineralization.
In 1988 Corona Corporation acquired the Grizzly West ground and completed prospecting, rock sampling and soil sampling producing numerous soil anomalies from 0.5 -1.0 g/t Au associated with copper mineralization.
In 1990 prospector Alex McMillan worked the AL 9 area and discovered porphyry veins 4 to 6 inches wide in the centre of AL 9 with one vein being 4 feet wide. Over 1990 and 1991 Active Minerals also performed a series of soil and stream sediment sampling programs in the current Grizzly Central area.
The property was dormant from 1991 to 2005 when Garibaldi Resources Corp optioned a consolidated land package from Ram Explorations and continued to expand the property.
In 2006 an airborne magnetic survey was completed over top of the southern and central portions of the property.
From 2008 to 2012 several reconnaissance soil geochemical surveys were performed, targeting magnetic anomalies identified in the 2006 airborne survey. These geochemical surveys outlined a 350 by 1000 metre copper-in-soil anomaly in the Grizzly Central area as well as confirmed copper-in-soil anomalies at the historic Grizzly West area. Approximately 2483 soil samples were taken in the Grizzly Central area (see Ultra 1 prospect (new MINFILE)), 274 at the Southwest Anomaly (104J 063) and 800 at the Grizzly West prospect area (104J 004 and 016).
A trial geophysical IP survey was completed in 2009 in the Grizzly Central area to test a magnetic anomaly and identified areas of high chargeability flanking the anomaly. An airborne magnetic and radiometric survey was completed over the northern half of the property in 2013 and identified a number of magnetic highs and Th/K lows associated with copper-gold showings.
In March of 2015 a soil geochemical survey totaling 290 samples was completed to infill areas of the 350 metre by 1000 metre copper-in-soil anomaly in Grizzly Central. In the second half of 2015 five drill holes, totaling 1153 metres, were completed at Grizzly Central. No significant copper mineralization was observed but did result in a nickel, scandium and magnesium prospected named the Ultra 1 showing (Assessment Report 36480).
In 2017 Garibaldi Resources worked on the reclamation of the 2015 drill program and no further work was done until this year’s exploration program.
In 2018, Garibaldi Soil conducted geochemical surveys on 4 of the 5 targets: Hat East, Pyrrhotite Creek South, West Kaketsa, and AL 9. In total 192 soil samples were taken. At Pyrrhotite Creek South, 42 soil samples were taken at 50 metre intervals on a line contouring the northern claim boundary shared with Prosper Gold Corp. Rock sampling was completed at 5 targets: Pyrrhotite Creek South (10 rocks), West Kaketsa (22 rocks), Grizzly Prospect (12 rocks), AL 9 (1 rock) and Hat East (1 rock). In total 46 rock samples were taken. Mapping was conducted on all targets except Hat East. From September 21 to October 10, 2018 Geotech flew a Versatile Time Domain Electromagnetic (VTEM plus) and Horizontal Magnetic Gradiometer Geophysical Survey over the Grizzly claims. A total area of 303 square kilometre (1705 line-kilometres) of geophysical data were acquired during the survey. Traverse lines were flown East-West at a 200-metre spacing.
