Mr. Tim Heenan reports

MIRASOL REFINES PRIORITY TARGETS BASED ON RESULTS FROM PRELIMINARY DRILL PROGRAM AT SOBEK COPPER PROJECT IN CHILE

Results from the preliminary drill program at Mirasol Resources Ltd.'s 100-per-cent-owned Sobek copper-gold project in the Vicuna copper-gold-silver district of Chile were inconclusive as the first drill holes did not reach the desired targets. Drilling was suspended with the onset of winter weather in the high Andes. The drill program was initiated late in the season when road construction allowed access for the drill rig (see news release dated June 27, 2023). The initial targets will require follow-up drilling and several other priority targets will also be drill tested when the campaign resumes in Q4 2023.

Sobek was originally staked by Mirasol based on prospective local geology and attractive structural architecture prior to the 2021 discovery of the high-grade feeder zone at the Filo del Sol gold-copper deposit located seven kilometres to the east and NGEx Minerals' discovery at Lunahuasi (formerly Potro Cliffs) three km to the east.

"Mirasol is the only junior exploration company actively drilling in the middle of the high-profile Vicuna copper-gold district in northeast Chile where extraordinary discoveries continue to be made. In the interest of safety, our maiden drill campaign was suspended due to the onset of winter weather before we could adequately test our first targets. However, these early results have provided some important structural data which will help to refine our drill plans," Mirasol's president, Tim Heenan, stated. "We have only just started to scratch the surface at Sobek and high-priority targets of massive scale remain to be drill tested. We are excited to resume drilling in just a couple of months as soon as the weather allows for access."

Sobek Central -- advancing maiden drill campaign

The first two drill holes at Sobek aimed to test the first of several high-priority targets but results were inconclusive as the program was halted before reaching the intended targets.

At Sobek Central, drill hole SB-DDH-001 was a structural target, testing for the source of the surface soil grid anomalies over and around the Central breccia zone, and also the source of the intensely phyllic altered porphyry clasts hosted within the breccia. The drill hole was stopped at a depth of 352 metres when it passed through a structural fault zone hosting strong calcite/gypsum stockworks. Follow-up drilling will aim to test the target from the opposite direction. Interpretation suggests that the structural source of the breccia may have flattened out, resulting in the hole being drilled parallel and underneath the structure, or the structure may have pinched out at depth within the fault zone.

Also at Sobek Central, drill hole SB-DDH-002 targeted the northern cusp of the massive northernmost MT (magnetotelluric) anomaly. For safety reasons, drilling was halted at a depth of 586 m before it reached the intended target. Based on the weak to moderate green rock peripheral propylitic style of alteration and the lack of consistent mineralization, the target has been refined and the drill collar will now be repositioned to start at a lower elevation to reach the centre of the target more efficiently. The massive MT anomaly is elongated in a northwest-southeast direction and is two kilometres by one kilometre in size. The drill hole only reached the outer fringes of the target when it was halted. Three-dimensional line-based sections from the mobile MT data are also currently being analyzed in detail to identify the best zones of this extensive target to be drill test.

Construction of the drill access road will resume early in Q4 2023. Once completed, there will be unrestricted access to all the targets at Sobek Central.

Airborne mobile MT geophysical survey outlines several high-priority targets

Mirasol completed a 500 line km airborne mobile MT survey (75 square km) covering the entire Sobek Central area and a small area of Sobek North (13 square km) prior to demobilization of the MT system. The airborne mobile MT has high-definition depth penetration to greater than 800 m depth below surface and has been proven effective in defining targets in high-sulphidation epithermal (HSE) and porphyry systems elsewhere in Chile. The survey has outlined a very striking cluster of MT anomalies and the interpretation suggests they may represent intrusive centres. The Central breccia, and both the VN-zone and VN-zone North targets, lie on the peripheral rims of these oval-shaped MT responses.

VN-zone and other priority targets

The VN-zone was elevated as a high-priority target late in the season when high gold grades were recovered from prospecting, with results up to five grams per tonne gold and 2,200 parts per million copper being sourced from select grab samples (see news release dated June 27, 2023). The VN-zone sits on the northern outer cusp of a second very large, oval-shaped mobile MT anomaly, with dimensions of 1.5 km by two km, which is interpreted to represent a prospective intrusive centre. To determine the best location and orientation of the first holes to drill test the massive anomaly multiple line-based 3D sections of the data have been generated and are currently being analyzed. Detailed mapping and drilling of this strongly mineralized sheeted vein zone will be a primary focus of next season's campaign.

Another new occurrence of mineralized "M" veins (VN-zone North) was exposed along the road cut en route to the VN-zone. The VN-zone North is located approximately 1.4 km north-northeast of the VN-zone and sits on the eastern edge of the northernmost mobile MT anomaly. Samples collected from the road-cut exposure returned values of 1.37 g/t gold and 663 ppm copper, and 0.54 g/t gold and 411 ppm copper. These strong gold results are all sourced from sheeted Maricunga-type quartz-magnetite veinlets with argillized margins. The "M" veinlets contain anomalous values of associated copper mineralization (2,220 ppm), which is typical in Chilean gold-copper Maricunga-type porphyry deposits.

Sobek North block surface exploration is also planned over priority targets at the El Potro zone located approximately three km west of NGEx's new Lunahuasi discovery. This will include electrical surface-based induced polarization geophysics over the recently discovered El Potro East zone which has returned very encouraging geochemical results from rock chip samples, including up to 4.3 g/t gold and 26 g/t silver from HSE-type intensely altered and silicified areas, located above the more copper/molybdenum porphyry-like style of mineralization which returned 0.65 per cent copper and 105 ppm molybdenum (see news release dated June 27, 2023). This area is scheduled to be drill tested in the early part of the Q1 2024. The maiden drill campaign is expected to resume in Q4 2023 with another 3,400 m of drilling planned to test priority targets starting at Sobek Central and continuing to Sobek North (El Potro zone).

High-profile Vicuna copper-gold-silver district

Sobek was staked in 2016 based on the prospective geological environment and the local structural architecture with a compelling north-northeast-trending mineralized structural corridor crosscut by a north-northwest-trending deep-seated trans-cordilleran lineament. This is a common structural configuration hosting several southern Andes metal deposits in both Chile and Argentina.

Sobek comprises a large block of property totalling 11,120 hectares of exploration claims in three strategic locations, the North, Central and South blocks within the Vicuna copper-gold-silver district. The high-profile district includes multiple deposits in close proximity of Sobek, including the Filo del Sol mid-Miocene epithermal porphyry gold-copper deposit seven km to the east; the recent NGEx discovery at Lunahuasi (formerly Potro Cliffs) three kilometres to the east; the Josemaria copper-gold project 10 km to the east-northeast; the Los Helados porphyry copper-gold breccia system 20 km to the northeast; and the giant Eocene El Morro porphyry copper-gold deposit 16 km to the west-southwest.

About Mirasol Resources Ltd.

Mirasol is a well-financed exploration company with 19 years of operating, permitting and community relations experience in the mineral-rich regions of Chile and Argentina. Mirasol controls 100 per cent of the high-grade Virginia silver deposit in Argentina and is currently self-financing exploration at two flagship projects, Sobek and Inca Gold, both located in Chile. Mirasol also continues to advance a strong pipeline of highly prospective early- and mid-stage projects.

We seek Safe Harbor.