Solaris Resources (TSX:SLS) Reports Assay Results From Expansion Drilling at ‘Indicative Starter Pit at Warintza Project, Returning 186m of 0.64% CuEq From Near Surface

Figure 1 – Plan View of Warintza Central Drilling Released to Date. Source: Solaris Resources

Solaris Resources (TSX:SLS) (OTCQB:SLSSF) has reported new assay results from a series of holes aimed at growing the Northeast Extension of the “Indicative Starter Pit” at the Warintza Project, with further resource expansion growing the area of near-surface, high-grade mineralization estimated at estimated at 180 Mt at 0.82% CuEq¹ (Indicated) and 107 Mt at 0.73% CuEq¹ (Inferred) within the Warintza Mineral Resource Estimate. The company is currently waiting on assays from follow-up step-out drilling, and has additional platforms planned for construction at the project. 

Mr. Jorge Fierro, Vice President, Exploration, commented in a press release: “The Northeast Extension represents a significant area of focus for growing the ‘Indicative Starter Pit’, one of the two key goals for the follow-on drilling program from the 2022 MRE, with the other being major resource growth at Warintza East, where extensional and step-out holes are due shortly. In addition, a major program of reconnaissance sampling that commenced last summer has identified new areas of well mineralized outcrop in previously inaccessible terrain adjacent to the Warintza Central and Warintza East deposits that present opportunities for additional discoveries, with further details to be released shortly.”

Highlights from the results are as follows:

  • SLS-70 was collared at the northeastern limit of Warintza Central and drilled northeast into an open volume, returning 186m of 0.64% CuEq¹ from near surface within a broader interval of 264m of 0.55% CuEq¹, expanding the zone to the north where it remains open
  • This hole follows from SLS-65, drilled approximately 90 degrees to the northwest from the same platform, which returned 286m of 0.55% CuEq¹ from near surface (refer to press release dated December 5, 2022)
  • SLS-69, collared from the same platform and drilled the opposite direction to the southwest, returned 156m of 0.60% CuEq¹ from 52m depth within a broader interval of 846m of 0.30% CuEq¹, connecting the Northeast Extension to Warintza Central
  • Prior hole SLS-66, drilled west-southwest, returned 124m of 0.82% CuEq¹ from near surface within a broader interval of 622m of 0.42% CuEq¹ (refer to press release dated September 7, 2022) from a platform to the south where a follow-up southwest-oriented hole is planned to better connect the Northeast Extension to Warintza Central
  • Assays are pending from two newly constructed 250m step-out platforms testing the zone further to the northeast, with additional platforms planned for construction as the weather improves

Table 1 – Assay Results

Hole ID Date Reported From (m) To (m) Interval (m) Cu (%) Mo (%) Au (g/t) CuEq¹ (%)
SLS-70 Mar 13, 2023 26 290 264 0.38 0.03 0.11 0.55
Including 104 290 186 0.48 0.03 0.11 0.64
Including 104 198 94 0.53 0.03 0.11 0.70
SLS-69 52 898 846 0.20 0.02 0.03 0.30
Including 52 208 156 0.48 0.02 0.08 0.60
Including 52 122 70 0.56 0.03 0.06 0.70
Notes to table: True widths of the mineralized zone are not known at this time.

Table 2 – Collar Location

Hole ID Easting Northing Elevation (m) Depth (m) Azimuth (degrees) Dip (degrees)
SLS-70 800350 9648417 1356 291 20 -65
SLS-69 800350 9648417 1356 944 200 -70
Notes to table: The coordinates are in WGS84 17S Datum.


  1. Copper-equivalence calculated as: CuEq (%) = Cu (%) + 4.0476 × Mo (%) + 0.487 × Au (g/t), utilizing metal prices of US$3.50/lb Cu, US$15.00/lb Mo, and US$1,500/oz Au, and assumes recoveries of 90% Cu, 85% Mo, and 70% Au based on preliminary metallurgical test work. The ‘Indicative Starter Pit’ is based on the same assumptions as the MRE except utilized metal prices of US$1.00/lb Cu, US$7.50/lb Mo, and US$750/oz Au. The ‘Indicative Starter Pit’ is comprised of Indicated mineral resources of 180 Mt at 0.82% CuEq (0.67% Cu, 0.03% Mo, 0.07 g/t Au) and Inferred mineral resources of 107 Mt at 0.73% CuEq (0.64% Cu, 0.02% Mo, 0.05 g/t Au) above a 0.6% CuEq cut-off grade. No economic analysis has been completed by the Company and there is no guarantee an ‘Indicative Starter Pit’ will be realized or prove to be economic.
  2. Refer to Solaris’ technical report titled, “NI 43-101 Technical Report for the Warintza Project, Ecuador” with an effective date of April 1, 2022, prepared by Mario E. Rossi and filed on the Company’s SEDAR profile at
  3. For additional details on “Near Surface, High-Grade, NE Extension” intervals, refer to press release dated May 26, 2022 for SLS-57: 230m of 0.73% CuEq (0.59% Cu, 0.03% Mo, 0.08 g/t Au), refer to press release dated July 20, 2022 for SLS-62: 168m of 0.68% CuEq (0.51% Cu, 0.03% Mo, 0.07 g/t Au) and SLS-63: 230m of 1.02% CuEq (0.87% Cu, 0.02% Mo, 0.12 g/t Au), refer to press release dated September 7, 2022 for SLS-64: 110m of 0.54% CuEq (0.38% Cu, 0.04% Mo, 0.03 g/t Au) and SLS-66: 124m of 0.82% CuEq (0.71% Cu, 0.02% Mo, 0.09 g/t Au), refer to press release dated December 5, 2022 for SLS-65: 286m of 0.55% CuEq (0.38% Cu, 0.04% Mo, 0.06 g/t Au) and SLS-68: 72m of 1.00% CuEq (0.88% Cu, 0.02% Mo, 0.06 g/t Au).


The above references an opinion and is for information purposes only. It is not intended to be investment advice. Seek a licensed professional for investment advice. The author is not an insider or shareholder of any of the companies mentioned above.

By Matthew Evanoff

I specialize in the mining industry, focusing on top global mining stocks. My reporting covers the latest industry news, company/project developments, and profiles of key players. With a degree in finance and economics from the University of Toronto, I've contributed to a wide range of industry publications. Beyond my professional pursuits, I have a keen interest in global business and a love for travel.

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