Croteau Est

Property Highlights:

  • Positioned within the established, active and important Chapais- Chibougamou Mining camp (Figure 1);
  • Large property position, ~25 x 10kms, 198 claims (10,310 hectares) (Figure 2);
  • 100% Northern Superior;
  • Pre-Development Agreement with the Cree First Nation of Oujé Bougoumou;
  • Easily accessed by all-season roads, rail, airport and hydro, many exploration and mining services provided by three local communities, long history and tradition of mineral exploration and mining (Figure 2);
  • NI 43-101 Compliant Inferred Mineral Resources of 643,00 oz Au at 1.72g/t Au* (see Figure 3) referred to as the Croteau- Bouchard Shear Zone (CBSZ); There is an additional 270,000 ounces gold unclassified due to the small number of core drill holes used to define this resource; 
  • Inferred resources is open along strike both directions and at depth; and
  • Multiple early-stage exploration opportunities (see Figure 8).

Figure 1. Location of the Lac Surprise property within the Chapais- Chabougamau exploration camp.

Figure 2. The 100% Northern Superior owned, large Croteau Est property (~25 x 10kms, 198 claims (10,310 hectares). Easily accessed and serviced from 3 local communities.

NI 43-101 Compliant Resource

The Croteau Est property is highlighted by an NI 43-101 compliant inferred gold resource consisting of 640,00 ounces at 1.7 g/t Au, referred to as the Croteau Bouchard Shear Zone (CBSZ). The resource was determined from only 64 core drill holes over a 550m strike length and a width of 150m, with most of the drill holes <350m. There is an additional 270,000 ounces gold unclassified (see Northern Superior press release February 20, 2018) (Figure 3). 

Gold within the CBSZ is associated with at least 9 high grade gold shoots. All 9 high grade gold shoots are of mineable width (5m true width) and grade (2g/ t Au), dip to the east and are contiguous, as evidenced by the 96% hit rate experienced in the Company’s 2017 core drill program (see Northern Superior Corporate Presentation, (Figure 4). The mineralization was proven to extend directly to surface by projecting one of the shoots to surface and exposing it. This shoot consisted of two zones of >10g/t Au, 2.5m (long) x 2.0 m (wide) and 2.0m (long) x 0.5m (wide), enclosed by a halo of >5g/t Au, 7.0m (long) x 2.5m (wide) in turn enclosed by a halo of gold mineralization of >3g/t Au over an area of 8.0m (long) x 3.0m (wide) (see Northern Superior press release, November 3, 2014) (Figure 5). The system remains open along strike (both directions) and depth.

Evidence for high grade gold material associated with the CBSZ are derived from various sources (Table 1): a) bedrock grab samples (see Northern Superior press releases July 20, 2011, November 12, 2013); b) channel samples (see Northern Superior press releases, October 12, 2011, July 5, 2017); and c) core drilling (see Northern Superior press release November 13, 2017, January 10, 2018).

Figure 3. The 43-101 compliant inferred resource, 643,000 ounces at 1.72 g/t Au, illustrated in 3 dimensions. There are an additional 270,000 unclassified ounces gold. The resource is defined from only 64 drill holes over 550m strike length, 150m width and only defined to ~350m depth. The resource remains open along strike in both directions and at depth. 

Figure 4. Longitudinal Cross- section highlighting six of nine shallow southeastern dip of high grade “shoots.” These shoots have all been deemed as being of mineable width and grade. They are also considered continuous as evidenced by the 96% hit rate during the Company’s 2017 core drill program and that one of those high-grade shoots could be traced to surface.

Figure 5. One of the nine high grade shoots that was traced to surface and exposed in a trench. This shoot consists of two zones of > 10 g/t Au, 2.5m x 2.0 m and 2.0m x 0.5m; enclosed by a halo of >5g/t Au, 7.0m x 2.5m; and enclosed by a halo of gold mineralization of >3g/t Au over an area of 8.0m x 3.0m. 


Evidence, High Grade Gold

Highlighted Bedrock Grab Samples

150g/t Au

52.8g/t Au

68.7g/t Au

58.8 g/t Au

Highlighted Channel Samples

92.7g/t Au over 1.0m incl. 12.8g/t Au over 7.8m

14.37g/t Au over 7.5m


8.49g/t Au over 5.7m



Highlighted Core Intersections

11.06g/t Au over 9.1m incl. 43.75g/t Au over 2.0m

61.24g/t Au over 5.95m incl. 705g/t Au over 0.5m

7.5g/t Au over 7.95m incl. 56.4g/t Au over 1.0m

1.99g/t Au over 34.65m incl. 9.46g/t Au over 2.35m

Table 1. Examples of various materials with high grade gold assays

Expanding the CBSZ Gold Footprint

In August of 2021 the Company initiated a 220 hole, 2,530m reverse circulation drill program (RC) to define the northern and eastern extension of the gold footprint associated with the CBSZ (see Northern Superior press release, August 24, 2021). Due to wet ground conditions, this program was not completed as planned. However, the program was successful in significantly expanding the gold-footprint of the CBSZ, through:

a)    Identifying a third area of gold-mineralized sericite-carbonate alteration north of both the gold-bearing CBSZ (hosting the NI 43-101 compliant resource) and the Croteau Nord Shear Zone (CNSZ) previously defined. This third area defined by:
      i.    Gold-bearing bedrock chips (highlighted by a gold assay of 0.189 g/t Au);
      ii.    Bedrock chips characterized by sericite- carbonate alteration (same alteration associated with the CBSZ); and
     iii.    Pervasive dispersal of gold grain from this third area with at least 7 targets defined by the presence of anomalous, pristine gold grain-in-till values (>25; see Northern Superior press release, January 11, 2022).
b)    All primary lithologies associated with the CBSZ, CNSZ and the intervening tuffaceous sediments intersected in this RC program host gold; and
c)    Defined at least 9 core drill targets within this expanded gold footprint.

In January of 2022, Northern Superior announced a second RC drill program with a three-fold purpose (see Northern Superior press release, January 11, 2022):

a) Complete the RC program initiated in August 2021 (not completed due to saturated ground conditions) (Figure 6);
b) Refine the targets identified from the 2021 RC program; and
c) Identify any additional targets within the expanded area of this RC program.

Figure 6. Distribution of RC collar locations, 2021 (green) and 2022 (red) programs.

Preliminary results from the winter 2022 RC drill program met the first two of three goals based on bedrock chip lithology and geochemistry data (see Northern Superior press release, January 11, 2022). This new data, combined with the Company’s other data sets (including geophysics, till gold and gold geochemistry-in-till, core drilling, bedrock mapping, structural interpretation and prospecting), provides sufficient confidence in the core drill targets identified from the previous RC program (see Northern Superior press release, January 11, 2022) to drill them.

Taking advantage of the 2022 cold winter conditions and that drill trails and pads are already cut from the last RC program over areas inaccessible in the summer due to wet ground conditions, the Company initiated a core drill program to test at least 6 targets associated with these summer “wet” areas (see Northern Superior press release, March 22, 2022) (Figure 7). The Company may drill more targets if weather conditions permit and has procured the necessary service providers to accommodate between 2,000-5,000m of drilling. Additional drilling may include some of the targeting the Company has developed for the CBSZ to test continuity of eastward plunging high grade gold shoots (see Northern Superior press release, November 13, 2017).

Figure 7. Location of core drill collars and traces planned for the spring 2022 (blue ellipsoids) and summer 2022 (black rectangles) programs. 

The Greater Opportunity: Croteau Est Exploration 2022

Northern Superior is now in the process of reviewing and re-interpreting all geoscientific information associated with the property. The results from this exercise, coupled with: i) the gold grain-in-till data yet to be received from the winter 2022 RC drill program; and ii) results from the 2022 winter core drill program, will direct a property scale bedrock mapping and prospecting program planned for Q2/ Q3 of 2022 (Figure 8). The Company intends to initiate a core drill program for H2 of 2022 to test targets derived from the data compilation and bedrock mapping and prospecting programs.

Figure 8. There are at least three east- west shear zones identified on the property that are cross-cut by at least four NE- SW trending faults. At the intersection of each there is the potential for at least additional gold mineralization as evidenced by the presence of the CBSZ and showings that occur at these intersections. Summer bedrock mapping and prospecting program is currently being planned to test all these areas supported by results from a geodata compilation exercise and data received from the winter 2022 RC and core drill programs at the CBSZ.

* Reference for Northern Superior’s 640,000 ounce Inferred Gold Resource: “Drabble, Mark (B. App. Sci. (Geology), MAIG, MAusIMM); Glacken, Ian (BSc Hons (Geology), FAusIMM (CP), MIMMM, CEng; Kahan, Cervoj (B. App. Sci., MAIG, MAusIMM); Morgan, Rebecca (BSc Hons (Geology), GDip (Mining), MAIG, MAusIMM). October 12, 2015. Technical Report on the Croteau Est Gold Project, Québec September 2015, Mineral Resource Estimate.”