Northisle > Projects > North Island Project > Red Dog and Goodspeed

Project Overview

The Red Dog deposit is entirely enclosed within NorthIsle’s 100% owned claims. It was acquired by option for its potential to provide higher grade mineralization to a mining operation in the Hushamu area

The Red Dog Property hosts a current indicated resource at a cut-off of 0.1% Cu of 54.5 million tonnes grading 0.22% Cu and 0.31 g/t Au associated with a quartz-pyrite cemented chlorite-magnetite-silica (CMG) breccia (QMB) developed adjacent to a quartz feldspar porphyry intrusion.

The importance of this area is its proximity to the Hushamu Deposit (approximately 8km), making it a potential source of feed should subsequent engineering studies show the Hushamu deposit and the occurrences in this area to be economically viable.

A large area of high level advanced argillic alteration measuring over one kilometer in diameter occurs south of the quartz breccias and shallow drill holes into this high-level alteration show increasing copper and gold grades with depth. To the east, at the Goodspeed target, recently completed structural and alteration mapping has outlined a large area of silica-clay-pyrite alteration, surrounding a 500m by 350m core of chlorite-magnetite alteration containing stockwork quartz-magnetite veining and minor chalcopyrite +/- bornite, analogous to that seen at Hushamu, Red Dog and Island Copper.

Outcropping quartz chalcopyrite-bornite stockwork mineralization in Chlorite-magnetite-silica (CMG) alteration

A recent review of shallow historic drill holes limited to this zone showed significant intercepts.



Exploration, in 2022, focused on the potential for a buried copper-gold porphyry system to the south and east of the Red Dog deposit and in the area between Red Dog and Goodspeed. A geophysical survey totaling 15.79 line-kilometers over an area of 3,500m by 850m was completed in late 2022. The resulting IP chargeability anomaly from this survey extending east from the Red Dog deposit to Goodspeed is consistent with the recently mapped extent of the silica-clay-pyrite alteration observed at surface. Eight preliminary targets (GSRD-1 to GSRD-8) for drill testing have been defined.


The next steps are to complete additional infill drilling in order to upgrade the resource ahead of a potential future pre-feasibility study.

All scientific information contained on this website has been reviewed and approved by Robin Tolbert, P.Geo., Vice President, Exploration of NorthIsle Copper and Gold Inc. who is a “qualified person” as defined by National Instrument 43 – 101 of the Canadian Securities Administration.

Note that the preliminary economic assessment is preliminary in nature. It includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is no certainty that the preliminary economic assessment will be realized.


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