Northstar Gold Corp. announce results of a recent surface sampling program at the historic Cam Copper Mine site on the Company's 100%-owned, Miller Property, situated 18 km southeast of the town of Kirkland Lake, Ontario. The Cam Copper Mine is a road accessible satellite high-grade copper system situated 2.4 km southwest of the Allied Gold Zone, the advanced, near-surface bulk-tonnage alkalic gold-telluride exploration target being actively explored by Northstar.

High-Grade copper assays ranging between 0.99% and 31.8% copper were returned from 19 select surface grab samples containing massive to semi-massive sulphides (including massive chalcopyrite and bornite) and collectively weighing 43.39 kg, recently collected near the historic Cam Copper Mine site on the Miller Property in Pacaud Township. The weighted average grade of the 19 select samples collected from the historic muck pile and bedrock exposure near the historic shaft was 14.0% copper. In addition to high-grade copper, one select sample that assayed 31.8% copper also returned 452 g/t silver, suggesting silver can also be a significant mineralization component.

The Cam Copper Mine reportedly hosts two separate lenses of massive copper sulphides about 40 metres apart striking and plunging southeast along the contact with the Round Lake Granite Batholith. Underground development took place between 1929 and 1953 which includes sinking of a 220' (66.7m) vertical shaft with 213' (64.5m) of cross cutting and 267' (80.9m) of drifting. The recent surface sampling results verify historic reporting of a 1955 shipment of 346 tons of hoisted underground ore which produced 43,411 lbs.

of Cu1 at a Noranda smelter for a recovered grade of 6.3% Cu. The ore was shipped directly from the mine site to the smelter without requiring further concentration in a mill. A previous 1948 shipment of 22 tons of ore to Noranda reportedly graded 12.72% Cu, 0.84 oz/t Ag and 0.03 oz/t Au2, presumably from Zone 1. Northstar 2023 Cam Copper Surface Exploration Program: Northstar carried out a brief surface exploration program consisting of prospecting and sampling of Cam Copper Mine between May 19 and 25th, 2023.

A total of 19 representative surface samples were collected from the muck pile and bedrock surface near the historic shaft. Three samples were collected from a historic trench along the surface expression of Zone 2. Assay results of the 19 samples ranged from 0.99% - 31.8% Cu, and 0.31 g/t Ag - 452 g/t Ag. Copper grades from the Cam Copper muck pile and bedrock were consistent with historically reported grades from both drilling intercepts, underground sampling and former mine production data.

One muck sample (E455292) of massive chalcopyrite with bornite assayed 31.8% Cu, 0.53% Zn, and 452 g/t Ag. A bedrock sample (E455309) collected from mineralized banded iron formation near the historic shaft assayed 13.65% Cu. Three samples collected from a trench representing the surface expression of Zone 2 included one sample (E455315) that assayed 0.54% Cu, indicating a possible extension of Zone 2 towards the southeast of the old workings.

Follow up work is required in the Cam Copper area to fully investigate the down plunge extension of the historic deposit. Southeast Extension - Geophysical Targets: Iron formation hosting massive sulphides is known to extend for hundreds of metres along strike southeast of the Cam Copper Mine site. The trend includes multiple ground EM and IP targets3 along with strong airborne EM and magnetic anomalies.

Future Plans: Northstar will undertake a ground truthing and sampling program of surficial geophysical anomalies along strike to the southeast of the Cam Copper Mine searching for analogous targets that could potentially host massive copper sulphides. Follow-up drilling is now being planned to test the down plunge extension of the bornite-rich pods of massive sulphide in Zones 1 and 2. The Historic Cam Copper Mine: The Cam Copper Mine reportedly hosts two separate lenses of massive copper sulphides about 40 metres apart striking and plunging southeast along the contact with the Round Lake Granite Batholith. Laminated sulphides hosted in tuff with lower grade copper values are reported to occur on either side of the massive copper sulphide bands.

The copper mineralization is focused along the steeply plunging intersection of northeast striking silicified tectonic breccias with southeast striking, vertically dipping bands of silicious sulphide facies iron formation within felsic and mafic tuffaceous units. The copper zones remain open down plunge to the southeast. The former producing Amity and Patterson copper mines occur within the same geologic formation along strike to the northwest.

Underground Development and Historic Production: Underground development took place between 1929 and 1953 which includes sinking of a 220' (66.7m) vertical shaft with 213' (64.5m) of cross cutting and 267' (80.9m) of drifting. The recent surface sampling results verify historic reporting of a 1955 shipment of 346 tons of hoisted underground ore which produced 43,411 lbs. of Cu1 at a Noranda smelter for a recovered grade of 6.3% copper.

The ore was shipped directly from the mine site to the smelter without requiring further concentration in a mill. A previous 1948 shipment of 22 tons of ore to Noranda reportedly graded 12.72% Cu, 0.84 oz/t Ag and 0.03 oz/t Au2, presumably from Zone 1. Historic Drilling: Historic drilling intercepts in Zone 1 by Consolidated Golden Arrow Mines Ltd. at the Cam Copper Mine include: · 1.6% Cu over 6.6' (2.0m) in DDH 1; · 9.8% Cu over 4' (1.21m) in DDH 1A; · 12.4 % Cu over 7.8' (2.36m) in DDH 3; · 7.0% Cu over 6' (1.82m) in DDH 4. Average sampling grade reported in Zone 1 was 8.5% Cu over a true width of 4.4' (1.33m) indicated over 100' (30.3m) along strike. Historic drilling intercepts by Consolidated Golden Arrow Mines Ltd. in Zone 2 include: 3 · 10.5% Cu over 0.5' (0.15m) in DDH 2; · 19.9% Cu over 3.1' (0.94M) in DDH 3; · 23.1% Cu over 4.6' (1.39m) in DDH 4 ---> down plunge extension below workings; · 12.4% Cu over 3.3' (1.0m) in DDH 7 ---> down plunge extension below workings.

Average sampling grade reported in Zone 2 was 10% Cu over a true width of 2.8' (0.85m) indicated over 140' (42.4m) along strike. Bornite was reported to be common in Zone 2 with the bornite rich pods of massive sulphides remaining open down plunge to the southeast.