Northwest Ontario Nickel-Cobalt Project

With a renewed interest in nickel and cobalt, and following a reinterpretation of encouraging historical data, Crystal Lake Mining is launching an aggressive 2018 exploration program at its Northwest Ontario Nickel-Cobalt Project approximately 35 km from the Rainy River Gold mine.

Project highlights:

  • Historic mineral zone (Nico1) has yet to be tested at depth
  • Nickel “tenor” (metal content in 100% sulphide) estimated at between 3% and 4%
  • Crystal Lake’s last drill hole in late 2015 cut high-grade nickel-copper
  • Ideal geological setting for a nickel-copper-cobalt-platinum-palladium massive sulphide discovery in an under-explored region
  • Highly prospective overall land package with multiple target areas
  • Excellent infrastructure - roads, rail and power

The company is well-positioned through Emerald Lake, its geological Contractor, to undertake a major 2018 program using a team of experienced explorers from Ronacher-McKenzie Geoscience Inc. backed by the magmatic sulphide expertise of Lightfoot Geoscience Inc.

Broader Package

Crystal Lake’s growing land position in the Rainy River block is centered over magnetic features and adjacent to known or potential fault structures and/or known mafic-ultramafic intrusions with nickel-copper-cobalt sulphide mineralization.

The mineral endowment of transtensional rifts can be prolific, and the Rainy River block is no exception with structurally modified epithermal gold deposits and many examples of VMS and magmatic sulphide occurrences. The geological environment has similarities to the Eskay Rift in Northwest British Columbia where Garibaldi Resources has recently made an important new nickel-copper-rich massive sulphide discovery.

Historic Deposit

Mineralization at Nico 1 is the most significant magmatic sulphide occurrence in the Rainy River block and features high nickel tenor values between 3% and 4%. Multiple 4-8m wide northerly plunging lenses of heavier sulphide mineralization are present within a large halo of disseminated sulphide. A total of 4.8 million tonnes (non-compliant) grading 0.24% nickel, 0.28% copper and 0.05% cobalt was defined above approximately 100m depth by Chibtown Copper Corp. in 1966 based on 220 short holes. The historic resource has not been verified by Crystal lake. Key assumptions and methods used to prepare the historical estimates are not known. The original data are no longer available and the ground would have to be re-drilled should Crystal Lake wish to provide its investors with a resource calculation.

The roots of the Nico 1 mineral zone at depth and related parts of the Dobie intrusion offer a focus for further exploration using electromagnetic methods to test for high-grade massive Ni-Cu-Co-PGE sulphide mineralization.

Drill core and surface samples from NiCo 1 contain disseminated through semi-massive magmatic-textured pyrrhotite, pentlandite and chalcopyrite mineralization hosted by gabbro. The semi-massive sulphide mineralization and mafic inclusions comprise a magmatic breccia within a broader unit of gabbro with disseminated sulphide. These geological relationships are commonly encountered in magmatic sulphide ore deposits and support the importance of effectively testing the rocks developed above the contact of the intrusion beneath the Nico 1 mineralization.

Recent Exploration

In late 2015, the company drilled in total 1,860 meters in 10 holes. One drill hole (A-04-15) confirmed that high-grade nickel-copper shoots do exist and are considerably better than previously recorded in the historical drilling. Hole A-04-15 intersected from surface to 63.75 meters (drilled purposely in a down-plunge direction to confirm continuity) a weighted average of 1.05% nickel and 2.18% copper (true width of A-04-15 is materially narrower than the drill hole intersection). See Press Release dated March 30, 2017.



Share