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Marimaca Copper Corp.: 2021 Exploration Program Starts and Drill Rigs Mobilized

VANCOUVER, British Columbia, Jan 12, 2021 (GLOBE NEWSWIRE via COMTEX) --

Marimaca Copper Corp. ("Marimaca Copper" or the "Company") (TSX: MARI) is pleased to announce the mobilization of drilling contractors, the construction of the first drill pads and the commencement of construction of the infrastructure and support facilities for the 2021 exploration program across the Marimaca Copper District.

Highlights

° Numerous deeper holes drilled at Marimaca during Phase II drilling intercepted sulphide mineralization below the Marimaca Oxide Deposit ("MOD"). Significant results previously released to the market include:

? 42 metres averaging 0.57% CuT from 272 metres in ATR-30

? 26 metres averaging 0.97% CuT from 178 metres in ATR-78

? 16 metres averaging 1.4% CuT from 122 metres in ATR-79

? 44 metres averaging 1.05% CuT from 206 metres in ATR-82

? 26 metres averaging 0.84% CuT from 148 metres in ATR-84

? 36 metres averaging 1.68% CuT from 84 metres in ATR-85

? 38 metres averaging 1.04% CuT from 180 metres in ATR-93; and

? 48 metres averaging 1.30% CuT from 78 metres in ATR-94.

° Several holes ended in mineralization and the sulphide zone remains open in all directions

° Induced Polarization ("IP") complete, release pending processing and interpretation

° Exploration program will expose mineralization and provide additional information with respect to oxide target

Hayden Locke, President of Marimaca Copper, commented:

"Our team has worked tirelessly over the holiday season to prepare for the upcoming exploration program and we are excited to announce that drill rigs have been mobilized and site preparations are well underway. The first rig will focus on the Marimaca Sulphide Target, which has the potential to deliver a meaningful extension to the outstanding Marimaca Oxide Project. We have completed IP surveys and the results are pending final processing and review.

"We have also commenced the construction of roads near the Mercedes Target, coincident with the large surface geochemical anomaly. This will provide additional geological information by exposing mineralization and allowing for more detailed mapping and sampling.

"In addition, the team has completed sampling at the Cindy Target, just to the north of Mercedes. Widespread copper mineralization has been noted in the mapping and sampling work completed and the results should be available to release to the market in the coming weeks.

"We are entering an exciting phase for the Company as we move to test several high priority exploration targets, each of which, if we are successful, could change the scale of the opportunity at Marimaca."

Overview of Work Underway in the Marimaca District

Support Facilities Construction, Drill Pad Construction and Rig Mobilization

During late December and early January, the Company commenced construction of the drilling support facilities. Contractors were mobilized and construction of the first drill pads commenced for the Marimaca Sulphide Target. Drilling is expected to commence before the end of January 2021.

Figure 1: Drilling Support Facilities for 2021 Exploration Program

<a data-type="gnw-snippetgallery" href="https://www.globenewswire.com/Tracker?data=OPuBMpl7I-uVBbwLwL8o5G7YAuX35JvD1xPDsLBYexIA6aQVZJtYjSHTpeote1UUvlC60XSbfCGb1ix6sX25hRU1Ew4xTgTtm2ZW7j7kbuQ=" rel="nofollow" target="_blank"><img alt="Drilling Support Facilities for 2021 Exploration Program: Media Snippet" data-mce-src="/api/ImageRender/DownloadFile?resourceId=32654b50-c533-4a3f-a63c-77d773874827&size=3" src="https://ml.globenewswire.com/Resource/Download/32654b50-c533-4a3f-a63c-77d773874827" /></a>

The first holes into the Marimaca Sulphide Target will focus on extensions of the sulphide mineralization intersected during previous infill drilling campaigns. These included numerous broad zones of high-grade material immediately below the oxide resource, with several of the drill holes ending in mineralization. Significant results previously released to the market include:

The Company has completed an IP survey for the Marimaca Sulphide Target. The results are in the final phase of reprocessing and analysis and should be released to the market, in the coming weeks.

Figure 2: Preparation of Drill Pads -- https://www.globenewswire.com/NewsRoom/AttachmentNg/a0f96ecf-fcaa-4ab4-a2cb-5ac9b04b847d

Mercedes Oxide Target

The Mercedes Target is located approximately 3km to the north of the MOD and was identified as a large-scale magnetic high, which has many characteristics in common with the MOD (refer to release 23 September 2020) including its structural orientation and size.

The Company has completed a sampling program on a 50 metre by 50 metre grid (refer to release 9 December 2020) over the magnetic anomaly and extending to the west over the area believed to be prospective for oxide mineralization, as well as completing geological mapping and reconnaissance work over the same area. This work has defined a large copper anomaly extending approximately 600 metres by 500 metres with values above 200ppm copper, open to the northwest under the gravels.

Figure 3: Mercedes Target; Location, Magnetic High and Geochemical Anomaly -- https://www.globenewswire.com/NewsRoom/AttachmentNg/1acb870d-2550-4e5d-9e68-6c1a5ffded3c

The Mercedes Oxide anomaly is of similar scale to the original MOD geochemical anomaly, but with a key difference that, due to limited workings and infrastructure construction in the area of Mercedes, very little of the mineralization is exposed at surface. The Company is currently constructing drilling access roads in the Mercedes area, which should expose areas of mineralization and allow more detailed mapping and sampling to be conducted prior to drilling.

In addition, the Company has completed Induced Polarization surveys at the Mercedes Target with release of results pending processing and interpretation.

Cindy Target

During December and early January, the Company completed mapping and geochemical sampling at the Cindy Target, located just north of the Mercedes Target. Mapping has identified an extensive area of mineralization, which has been sampled. Cindy is coincident with a large magnetic high and is also the site of high grade, chalcopyrite-magnetite, artisanal underground mining. Results of the geochemical sampling will be released to the market in the coming weeks.

In addition, the Company has completed Induced Polarization surveys at the Mercedes Target with release of results pending processing and interpretation.

Figure 4: Results of Magnetic Survey and Location of Cindy Target -- https://www.globenewswire.com/NewsRoom/AttachmentNg/6362a321-c99a-42b5-8a4d-41d9286c2e71

Roble Target

The results of the district magnetic survey (refer to release 23 September 2020) highlighted the regionally extensive nature of the Naguayan Fault System, but also identified another fault system, which was previously unknown and that is also coincident with a large-scale magnetic anomaly.

The Roble Target is located on the Roble Fault System, which splays from the Naguayan Fault System to the north east. The Company has completed first pass geological mapping, geochemical sampling and some geophysical work including limonite index work to understand the level of oxidation beneath the cover. The results will be available for release to the market in the coming weeks.

Figure 5: Regional Mag Survey Results and Roble Target -- https://www.globenewswire.com/NewsRoom/AttachmentNg/be8b4a75-38f8-4008-94f7-ba4d19369225

Qualified Person

The technical information in this news release, including the information that relates to geology, drilling and mineralization was prepared under the supervision of, or has been reviewed by Sergio Rivera, Vice President of Exploration, Marimaca Copper Corp, a geologist with more than 36 years of experience and a member of the Colegio de Geologos de Chile and of the Institute of Mining Engineers of Chile, and who is the Qualified Person for the purposes of NI 43-101 responsible for the design and execution of the drilling program.

Mr. Rivera confirms that he has visited the Marimaca Project on numerous occasions, is responsible for the information contained in this news release and consents to its publication.

Contact Information

For further information please visit www.marimaca.com or contact:

Tavistock

+44 (0) 207 920 3150

Jos Simson/Emily Moss

marimaca@tavistock.co.uk

Forward Looking Statements

This news release includes certain "forward-looking statements" under applicable Canadian securities legislation. These statements relate to future events or the Company's future performance, business prospects or opportunities. Forward-looking statements include, but are not limited to, the impact of a rebranding of the Company, the future development and exploration potential of the Marimaca Project. Actual future results may differ materially. There can be no assurance that such statements will prove to be accurate, and actual results and future events could differ materially from those anticipated in such statements. Forward-looking statements reflect the beliefs, opinions and projections on the date the statements are made and are based upon a number of assumptions and estimates that, while considered reasonable by Marimaca Copper, are inherently subject to significant business, economic, competitive, political and social uncertainties and contingencies. Many factors, both known and unknown, could cause actual results, performance or achievements to be materially different from the results, performance or achievements that are or may be expressed or implied by such forward-looking statements and the parties have made assumptions and estimates based on or related to many of these factors. Such factors include, without limitation: risks related to share price and market conditions, the inherent risks involved in the mining, exploration and development of mineral properties, the uncertainties involved in interpreting drilling results and other geological data, fluctuating metal prices, the possibility of project delays or cost overruns or unanticipated excessive operating costs and expenses, uncertainties related to the necessity of financing, the availability of and costs of financing needed in the future as well as those factors disclosed in the Company's documents filed from time to time with the securities regulators in the Provinces of British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, New Brunswick, Nova Scotia, Prince Edward Island and Newfoundland and Labrador. Accordingly, readers should not place undue reliance on forward-looking statements. Marimaca Copper undertakes no obligation to update publicly or otherwise revise any forward-looking statements contained herein whether as a result of new information or future events or otherwise, except as may be required by law.

<img class="__GNW8366DE3E__IMG" src="https://ml.globenewswire.com/release/track/9e42f0ef-1d50-47e9-969b-7c9c943b3f8c" referrerpolicy="no-referrer-when-downgrade" width="1" height="1" style="display:none;" /><p>https://ml.globenewswire.com/media/e4a760f7-1418-45c4-885b-48ef1385a38c/small/marimaca-logo-png.png

https://ml.globenewswire.com/media/e4a760f7-1418-45c4-885b-48ef1385a38c/small/marimaca-logo-png.png

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