Mr. Stephen Nano reports

MIRASOL REPORTS ENCOURAGING EXPLORATION RESULTS FROM CURVA WEST PROSPECT AND PREPARES SECOND SEASON DRILL PROGRAM AT THE OCEANAGOLD LA CURVA JOINT VENTURE

Mirasol Resources Ltd. has received the $200,000 (U.S.) option payment confirming that Oceanagold Corp. will continue into the second year of the La Curva joint venture (JV), Santa Cruz, Argentina. OGC has met the first-year minimum JV commitments spending approximately $1.50-million (U.S.) to the end of May, 2018 (against $1.25-million (U.S.) committed), and drilling 3,020 metres at the Castora trend (see news release May 25, 2017).

Mirasol's president and chief executive officer, Stephen Nano, stated: "We are pleased to continue working with the team at Oceanagold. Mirasol and OGC are currently designing an aggressive second season drill program for La Curva project, which is anticipated to start in the fourth quarter of 2018. The program will provide a first-pass drill test of exciting new targets at Curva West and a second phase of drilling on the Castora trend focused at the Southwest and Cerro Chato prospects."

Highlights from the first seasons exploration at the La Curva JV

Last season's drilling was concentrated on the Castora trend where 3,020 metres of diamond core were drilled in 19 holes, including a follow-up deep stratgraphic drill hole to test for the presence of permissive hosts rocks a depth at the Cerro Chatto prospect. Drilling for last season's exploration is interpreted to have intersected the upper portion of a gold-dominated epithermal system with both lower-grade, broader zones of disseminated style Au plus Ag mineralization and narrow, high-grade epithermal veinlets. Assays results include, from the Southwest prospect, 106.2 metres at 0.61 gram per tonne Au and 2.7 g/t Ag, from a dome margin breccia and up to 1.80 m at 6.88 g/t Au and 84.9 g/t Ag from banded epithermal veining (see news release Feb. 28, 2018).

In addition, surface exploration from last season confirmed the presence of a prospective geological environment for epithermal Au plus Ag mineralization at the undrilled Curva West and the Castora trend Southwest prospects. Hydrothermal alteration was shown to be associated with Jurassic-age rhyolite to dacite flow domes and dike emplacement, and is interpreted to be contemporaneous with development of a large syn-volcanic horst and graben structural setting. This geological setting is the outcome of regional-scale crustal extension, that produces large-scale normal faulting, a permissive structural environment that can foster significant vein development when associated with active epithermal systems as seen at the Curva project.

Geological mapping at Curva West has outlined epiclastic sedimentary breccia units hosting angular clasts (up to five m in diameter) of sinter, silicified volcanics crosscut by epithermal veining and individual clasts of Au plus Ag bearing epithermal veins. The angular mineralized clasts cluster in specific sites along the fault-bounded margin and over the "roof" of a prevolcanic Permo-Triassic-age horst block, suggest minimal alluvial transport of the clasts and proximity to source.

Rock chip sampling of mineralized clasts at Curva West returned geochemically anomalous to high grades of Au plus Ag with a best sample of 20.73 g/t Au and 18.0 g/t Ag. The mineralized clasts cluster in five target areas, often with distinctive vein textures and Au/Ag ratios, suggesting the presence of several distinct, potentially covered sources of Au plus Ag mineralization.

PXRF geochemical grid soil sampling of the epiclastics over Curva West prospect delineated areas of coincident epithermal pathfinder (arsenic plus antimony plus mercury plus or minus base metals) anomalies in the soils often at sites coincident with clusters of Au plus Ag bearing clasts. Handheld infrared spectrometer (IRSpec) alteration studies of the soils also showed the epiclastic matrix to be hydrothermally altered to an argillic mineral assemblage (kaolinite-dickite) characteristic of the upper levels of a classic epithermal alteration system.

The superposition of near-source Au plus Ag mineralized vein clasts in an epiclastic sediment, where the sedimentary matrix has been hydrothermally altered, suggests erosion of the upper mineralized interval of an epithermal system, contemporaneous with the burial of the late stages of the active hydrothermal system, causing alteration of the epiclastic matrix. Similar geological settings have been documented for significant Jurassic age Au-Ag deposits elsewhere; including the Marianas-San Marcos vein system1 in Santa Cruz province, that hosts approximately 70 per cent of Au plus Ag resources of the estimated 6.7-million-ounce Au equivalent reserves and resources in the Cerro Negro district, and the world-class Fruta del Norte Au plus Ag deposit in Ecuador. The analogies in geological setting between Curva West/Southwest and significant gold systems elsewhere, lends support for the drill testing of targets at the Curva project.

3-D models of ground magnetics and induced polarization electrical geophysics were generated from a combination of existing Mirasol data and new surveys completed this season under the OGC JV. The models show features that support the horst and graben geological setting for Curva West and the Southwest prospects, and have been integrated with other data sets to select and prioritize drill targets for this season's program.

Stephen Nano, president and chief executive officer of Mirasol, has approved the technical content of this news release. Mr. Nano is a chartered professional geologist and fellow of the Australasian Institute of Mining and Metallurgy (CP and FAusIMM) and is a qualified person under National Instrument 43-101.

Quality assurance/quality control of the La Curva exploration program

Mirasol applies industry-standard exploration sampling methodologies and techniques. All geochemical soil, stream, rock and drill samples are collected under the supervision of the company's geologists in accordance with industry practice. Geochemical assays are obtained and reported under a quality assurance and quality control (QA/QC) program. Samples are dispatched to an ISO 9001:2008 accredited laboratory in Argentina for analysis. Assay results from surface rock, channel, trench and drill core samples may be higher, lower or similar to results obtained from surface samples due to surficial oxidation and enrichment processes or due to natural geological grade variations in the primary mineralization.

We seek Safe Harbor.