Prairie Lake

Nuinsco’s 100%-owned Prairie Lake property covers the entire 2.8 km² area (at surface) of the Prairie Lake Carbonatite Complex. The Prairie Lake Carbonatite Complex is an approximately 1160-million-year-old carbonatite-alkali intrusion emplaced into fractured and faulted continental shield rocks with the Trans Superior Tectonic Zone.

The Property is located just 28 km north of the Trans-Canada Highway Located and 45 km northwest of town of Marathon, Ontario. The property has year-round road access.

Prairie Lake hosts an Exploration Target (“ET”) totaling 515-630 million tonnes grading between 0.09-0.11% niobium and 3.0-4.0% phosphate with additional rare-earth and tantalum mineralization (P&E Mining Consultants, 2018¹). This exceptional tonnage places Prairie Lake well within the ranks of the largest carbonatite-hosted niobium deposits in the world.

The mineralization is exposed at surface and much of it could be exploited by simple quarrying methods. Only a small percentage of the surface area of the Prairie Lake carbonatite has been significantly explored and is included in the ET.

To date process testing has succeeded in producing phosphate concentrate to >30% P2O5. As noted, the suite of minerals of potentially economic significance also includes niobium (Nb2O5), tantalum (Ta2O5), uranium (U3O8), and rare earth elements (REE) – particularly cerium (Ce) and neodymium (Nd).

Nuinsco has already demonstrated that high-quality phosphate and niobium concentrate can be produced from Prairie Lake mineralization. Both commodities are anticipated to face high demand growth in the agricultural and “high tech” sectors, respectively. Further, the presence of significant rare earth mineralization, particularly neodymium, enhances the potential of the project as it has critical importance in the manufacture of high-performance electric motors (for hybrid vehicles) and megawatt scale wind turbines–again these are anticipated to be high growth applications in the years to come.

In 2019 the Company received a listing by the Organic Materials Review Institute (“OMRI”) of the project’s calcium carbonate rock for use as a soil amendment and in organic food production or food processing and handling according to the USDA National Organic Program regulations, yet another indication of Prairie Lake projects value. Phosphate bearing calcium carbonate rock (also known as phosrock) such as is found at Prairie Lake can be used to revitalize land which has lost its fertility as a result of excessive chemical farming.

1 The potential quantity and grade of the ET is conceptual in nature and there has been insufficient exploration to define a NI 43-101 mineral resource. Therefore, it is uncertain that further exploration will result in the delineation of the ET as a mineral resource deposit.

Regional Geology Location Roads Rail

PL Exploration Targets Geology

Prairie Lake technical report  
Prairie Lake presentation  

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