December 5, 2022 – Vancouver, B.C. – Solaris Resources Inc. (TSX: SLS; OTCQB: SLSSF) (“Solaris” or “the Company”) is pleased to report assay results from a series of holes aimed at growing the Northeast Extension of the ‘Indicative Starter Pit’ at its Warintza Project (“Warintza” or “the Project”) in southeastern Ecuador. Highlights are listed below, with a corresponding image in Figure 1 and detailed results in Tables 1-2.

Highlights
Resource expansion drilling continues to build on the Northeast Extension of the ‘Indicative Starter Pit’ which was estimated at 180 Mt at 0.82% CuEq¹ (Indicated) and 107 Mt at 0.73% CuEq¹ (Inferred) within the Warintza Mineral Resource Estimate² (“MRE”) based on drilling to the end of 2021. Follow-up drilling this year has significantly expanded the dimensions of the zone as a priority for high-impact growth with further drilling ongoing.

SLS-67 was collared at the north-central limit of Warintza Central and drilled southwest into a partially open volume, returning 108m of 1.20% CuEq¹ within a broader interval of 604m of 0.51% CuEq¹ from near surface

This hole expands on the area of high-grade near surface mineralization in combination with
SLS-48 which was collared from the same platform but drilled south, returning 100m of 1.64% CuEq³ within a broader interval of 852m of 0.56% CuEq³ from near surface (refer to press release dated Feb 28, 2022)

SLS-68 was collared from the same platform as SLS-67 and drilled steeply to the northwest into an open volume, returning 72m of 1.00% CuEq¹ within a broader interval of 616m of 0.44% CuEq¹ from near surface, expanding this area of higher-grade mineralization from near surface

SLS-65 was collared from a recently constructed 250m step-out platform at the northeast limit of the Warintza Central grid and drilled northwest into a partially open volume, returning 286m of 0.55% CuEq¹ from near surface

Assays are pending from a series of holes from this new drill platform aimed at further expanding resource growth in the Northeast Extension zone, with additional extension and step-out drilling underway

Mr. Jorge Fierro, Vice President, Exploration, commented: “The Northeast Extension remains open to the north with assays pending from recently completed holes. Further extensional drilling is planned with a 200m step-out platform on the northeastern margin of the drill grid aimed at expanding the zone in this direction. We’re also expecting assays from the remaining holes drilled from the discovery platform at Warintza West outlining a mineralized porphyry with minimum dimensions of 900m x 600m and open outside the MRE for future resource drilling, and the next series of holes targeting the expansion of Warintza East.”

Figure 1 – Plan View of Warintza Central Drilling Released to Date

Table 1 – Assay Results
Hole ID Date Reported From (m) To (m) Interval (m) Cu (%) Mo (%) Au (g/t) CuEq¹ (%)
SLS-68 Dec 5, 2022 44 660 616 0.34 0.02 0.04 0.44
Including 68 140 72 0.88 0.02 0.06 1.00
SLS-67 42 646 604 0.40 0.02 0.05 0.51
Including 42 150 108 1.06 0.03 0.09 1.20
SLS-65 88 374 286 0.38 0.04 0.06 0.55

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-68 800178 9648285 1439 662 332 -85
SLS-67 800178 9648285 1439 673 230 -76
SLS-65 800347 9648415 1346 401 290 -70
Notes to table: The coordinates are in WGS84 17S Datum.

Endnotes

Copper-equivalence for the Warintza Mineral Resource Estimate (“MRE”) and drill holes SLS-65, SLS-67 and SLS-68 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. 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.
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 www.sedar.com.
Copper-equivalence calculated as: CuEq (%) = Cu (%) + 3.33 × Mo (%) + 0.73 × Au (g/t), utilizing metal prices of US$3.00/lb Cu, US$10.00/lb Mo, and US$1,500/oz Au. No adjustments were made for recovery prior to the updated MRE, as the metallurgical data to allow for estimation of recoveries was not yet available. Solaris defined CuEq for reporting purposes only.

Technical Information and Quality Control & Quality Assurance

Sample assay results have been independently monitored through a quality control/quality assurance (“QA/QC”) program that includes the insertion of blind certified reference materials (standards), blanks and field duplicate samples. Logging and sampling are completed at a secured Company facility located in Quito, Ecuador. Drill core is cut in half on site and samples are securely transported to ALS Labs in Quito. Sample pulps are sent to ALS Labs in Lima, Peru and Vancouver, Canada for analysis. Total copper and molybdenum contents are determined by four-acid digestion with AAS finish. Gold is determined by fire assay of a 30-gram charge. In addition, selected pulp check samples are sent to Bureau Veritas lab in Lima, Peru. Both ALS Labs and Bureau Veritas lab are independent of Solaris. Solaris is not aware of any drilling, sampling, recovery or other factors that could materially affect the accuracy or reliability of the data referred to herein. The drillhole data has been verified by Jorge Fierro, M.Sc., DIC, PG, using data validation and quality assurance procedures under high industry standards.

Qualified Person

The scientific and technical content of this press release has been reviewed and approved by Jorge Fierro, M.Sc., DIC, PG, Vice President Exploration of Solaris who is a “Qualified Person” as defined in National Instrument 43-101 Standards of Disclosure for Mineral Projects. Jorge Fierro is a Registered Professional Geologist through the SME (registered member #4279075).

On behalf of the Board of Solaris Resources Inc.

“Daniel Earle”
President & CEO, Director

For Further Information

Jacqueline Wagenaar, VP Investor Relations