The Turnagain Project, located in north central British Columbia, is among the largest undeveloped sulphide nickel deposit in the world in terms of total contained nickel. Giga Metals has 100% ownership of the project.
Extensive metallurgical test work has shown that froth flotation can reliably create a clean concentrate, a very desirable product that can be upgraded to high purity Class One nickel for use in lithium ion batteries. The cobalt produced is another critical element in battery production, adding to the long-term viability of the resource.
To date, locked-cycle flotation testing has been conducted at two laboratories on eight composites, including several locked-cycle tests at Blue Coast Research in 2018. Seven of the composites yielded high grade nickel concentrates averaging 23% nickel at 52% recovery. The achievement of successful locked-cycle testing on a variety of samples from different parts of the Horsetrail deposit represents a major milestone for the project as these tests provide an important indication of the technical feasibility of the process.
The major focus of the locked-cycle flotation testing has been on composite samples from three horizontal holes drilled through the heart of the key Horsetrail zone, representing the expected production for the first several years of operation. Those tests employing the current standard process generally delivered repeatable results with recoveries in the range of 50-60% and concentrate grades in the range of 18-22% nickel, for samples ground to the target size of 80 µm.
Updated Mineral Resource, September 2019
Measured & Indicated resources of 5.2 Billion pounds of nickel and 312 Million pounds of cobalt and Inferred resources of 5.5 Billion pounds of nickel and 327 Million pounds of Cobalt.
Turnagain Mineral Resource1,2,3,4,5
Contained Ni (tonnes)
Contained Co (tonnes)
Contained Ni (Mlbs)
Contained Co (Mlbs)
Measured & Indicated
(1) All mineral resources have been estimated in accordance with Canadian Institute of Mining and Metallurgy and Petroleum (“CIM”) definitions, as required under National Instrument 43-101 (“NI 43-101”).
(2) Mineral resources are reported in relation to a conceptual pit shell in order to demonstrate reasonable expectation of eventual economic extraction, as required under NI 43-101; mineralization lying outside of these pit shells is not reported as a mineral resource. Mineral resources are not mineral reserves and do not have demonstrated economic viability.
(3) Mineral resources are reported at a cut-off grade of 0.1% Ni. Cut-off grades are based on a price of US $8.50 per pound and a number of operating cost and recovery assumptions, plus a contingency as reported in the December 2011 PEA authored by AMC Consulting.
(4) Inferred mineral resources are considered too speculative geologically to have economic considerations applied to them that would enable them to be categorized as mineral reserves. However, it is reasonably expected that the majority f Inferred mineral resources could be upgraded to Indicated.
(5) Due to rounding, numbers presented may not add up precisely to the totals provided and percentages my not precisely reflect absolute figures.
Garth Kirkham, P.Geo. and Greg Ross, P.Geo., Qualified Persons as defined by NI 43-101, have reviewed and approved the contents of this resource estimate.
For a more detailed geological description of the project, click here.
To read the 43-101 compliant Preliminary Economic Assessment, click here.