Guyana Goldstrike Extends Trenching of Quartzite-metachert Host Rock Over 100 Metre Long Horizon at Toucan Ridge Area, Marudi Project

At trench TTR-18-7 quartzite-metachert (the host rock for gold mineralization) has been trenched and exposed at surface for a continuous length of 107.5 metres. The south end of TTR-18-7 is near Toucan Creek where alluvial gold has been mined in the past.

Locke Goldsmith M Sc. P Eng. P Geo., VP Exploration states, "Trenching over a 100 metres of continuous quartzite-metachert, the host rock for gold mineralization at Marudi, is very significant. It establishes Toucan Ridge as a top priority for further exploration to determine the potential of it becoming a new and third mineralized zone at the Property. Further emphasizing the areas importance is the recent discovery of visible gold in our previous trench. Mineralization in the host rock at Marudi may or may not be present at surface due to erosion at different levels of the strata. The visual gold therefore identified at surface is another indicator that we are in the correct strata. This coupled with the length of the host rock horizon is establishing Toucan Ridge as a strong priority candidate for the Company's upcoming drill program."

Toucan Ridge Trenching and Magnetite

The Toucan Ridge area is the fourth of nine areas of interest that the Company has explored since commencing its Phase One exploration program. The Company has successfully uncovered and identified the host rock (quartzite-metachert) in all four areas explored.

To date, four trenches have been completed on Toucan Ridge for a length of approximately 580 m. In these trenches, concentrations of magnetite in quartzite-metachert occur in discrete horizons that may be traceable from trench to trench. The Company has planned a high-resolution airborne geophysical survey over the entire 13,500-acre Property using magnetic and radiometric systems. These systems are designed to detect magnetite and potassium concentrations respectively. Discrete horizons of magnetite in quartzite-metachert would be mapped by the survey. Interpretation of the resulting imagery can then be applied to further define and prioritize future trenching and drill targets for our planned drill program.

Trenching is planned to continue eastward from TTR-18-7 along the ridge following the trend of quartzite-metachert. The Toucan Ridge area is roughly 1.75 kilometres in length.

About Quartzite-metachert (Host Rock) at Marudi

At Marudi, all important gold mineralization discovered to date is associated with the medial quartzite-metachert (host rock) unit of the Marudi Mountain Formation. Gold occurs within the magnetite-hematite rich quartzite and in the magnetite-silicate iron formation. Mineralization of the host rock may be affected at surface by the erosion at different levels of the strata. Therefore, all discoveries of quartzite-metachert on the Property are considered important for the potential of containing mineralization at surface and/or at depth and should be explored through trenching and drilling. When discovered these areas are assigned high levels of priority for further exploration work, including drilling in the Company's planned drill program.

Map of Historical Exploration at Marudi with Location of Toucan Ridge (Toucan Hill) Area

Source: 43-101 Technical Report, December 20, 2017

Marudi Property Mazoa Hill Resource Estimate Report G. Mosher M. Sc. P. Geo.

Click Image To View Full Size

Historical Trenching

Previous operators at Marudi reported 3,327.40 metres of trenching and assayed 1,069 samples with gold values assayed up to 11 g/t of gold. (Source: D. Strickland P. Geo NI 43-101 Technical Report, November 30, 2016)

Sampling and assaying

All samples collected during this program were delivered to Activation Laboratories Ltd. (Actlabs) located in Georgetown, Guyana for gold content by Fire Assay (FA). Actlabs is ISO 17025 accredited and/or certified to 9001: 2008. With 25+ years' experience, with full analytical laboratories that perform high quality analysis to many industries around the world.

Quality assurance / Quality control (QA/QC)

Actlabs is an ISO 9001:2008 qualified assayer that performs and makes available internal assaying controls. Certified blanks and standards are systematically used as part of Guyana Goldstrike's QA/QC program with one blank and standard inserted at every 20 sample intervals.

Property Geology

Gold mineralization at Marudi is regarded as being related to iron-formation-hosted gold ("IFG") deposits that occur in other cratonic greenstone belts around the world. These deposits can be remarkably long-lived with sizeable gold production. They have a strong association between gold and iron sulfide minerals, the presence of gold bearing quartz veins and structures, the occurrence of deposits in structurally complex terranes, and the absence of lead and zinc enrichment.

Examples of some existing IFG deposits are: the Homestake Mine, Lupin Mine, and Musselwhite Mine.

The Homestake Mine is located in South Dakota USA and was the largest and deepest gold mine in North America. It has reported production of 43.9 million ounces of gold (source: https://en.wikipedia.org/wiki/Homestake_Mine_(South_Dakota) and was in production from 1878-2001.

The Lupin Mine located in Nunavut, Canada, no longer in production, produced approximately 3 million ounces of gold (source: http://www.kinross.com/news-and-investors/news-releases/press-release-details/2003/Suspension-of-Operations-at-the-Lupin-Mine/default.aspx).

The Mussellwhite mine has estimated reserves of 2.29 million ounces of gold (source: https://en.wikipedia.org/wiki/Musselwhite_mine) and is owned and operated by Goldcorp and will be in production until 2020.

About Guyana Goldstrike Inc.

Guyana Goldstrike Inc. is a Canadian based junior gold company focused on the exploration, development, and operation of the Marudi Gold Project in Guyana, South America.

www.guyanagoldstrike.com

About the Marudi Gold Project

The Company is developing the Marudi Gold Project located in Guyana, South America, the project is unique in that it has a 20-year mining license in good standing, all-season road access, infrastructure in place, with an established mining camp serviced by employees, service buildings, and a full-time mining manager. The Property has three known gold bearing areas, specifically the alluvial areas, the saprolite, and the underlying hard-rock.

There has been 42,000 metres of historic diamond drilling (141 holes) completed on the Project by prior operators. The Company has recently completed a mineral resource estimate on the Mazoa Hill zone containing 259,100 indicated gold ounces within 4,428,000 tonnes grading 1.8 grams/tonne (g/t) and 86,200 inferred gold ounces within 1,653,000 tonnes grading 1.60 grams/tonne (g/t). There exists excellent exploration upside through the development of previously identified mineralized bedrock targets on the Project.

For information concerning the mineral resource estimate and the Project, readers are encouraged to review "Technical Report: Marudi Property Mazoa Hill Mineral Resource Estimate", a technical report prepared for the Company by Global Mineral Resource Services and is available at http://www.guyanagoldstrike.com/images/pdf/43101_Report_Guyana_Goldstrike_Mazoa_Hill_Zone_Jan_2018.pdf and under the Company's profile on SEDAR www.sedar.com.

About Guyana

The Republic of Guyana is located in South America between Venezuela and Suriname. The country is English speaking and under British Common Law with a democratically-elected government. It has an established mining act and a rich history of gold production. In 2016, 690,000 ounces of gold was produced by operators mining in the country. The Fraser Institute's 2016 Annual Survey of Mining listed Guyana as the third best mining jurisdiction with regards to investment attractiveness in the Latin America and Caribbean Basin sub-group. The Guiana Shield is the geographic gold-hosting region, and is world-recognized as a premier gold region that is highly prospective, under-explored and has geological continuity with West Africa.* In 2016, two mines in Guyana declared the commencement of commercial production: the Aurora deposit (Guyana Goldfields) and the Karouni deposit (Troy Resources).

* Independent Technical and Environmental Review Karouni Gold Project - Guyana, Behre Dolbear Australia Pty Ltd, April 29, 2016

Qualified Person

Locke Goldsmith, M.Sc., P. Eng, P. Geo, Chief Geologist and Exploration Manager for the Company, is a Qualified Person in accordance with National Instrument 43-101 - Standards of Disclosure for Mineral Projects. Mr. Goldsmith has reviewed and approved the scientific and technical content of this news release.

On behalf of the Board of Directors of

Guyana Goldstrike Inc.

Peter Berdusco

President and Chief Executive Officer

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

This news release may contain certain "Forward-Looking Statements" within the meaning of the United States Private Securities Litigation Reform Act of 1995 and applicable Canadian securities laws. When used in this news release, the words "anticipate", "believe", "estimate", "expect", "target, "plan", "forecast", "may", "schedule" and other similar words or expressions identify forward-looking statements or information. These forward-looking statements or information may relate to future prices of commodities, accuracy of mineral or resource exploration activity, reserves or resources, regulatory or government requirements or approvals, the reliability of third party information, continued access to mineral properties or infrastructure, fluctuations in the market for gold, changes in exploration costs and government regulation in Guyana, status of artisanal mining activities and associated rights, and other factors or information. Such statements represent the Company's current views with respect to future events and are necessarily based upon a number of assumptions and estimates that, while considered reasonable by the Company, are inherently subject to significant business, economic, competitive, political and social risks, contingencies and uncertainties. Many factors, both known and unknown, could cause 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. The Company does not intend, and does not assume any obligation, to update these forward-looking statements or information to reflect changes in assumptions or changes in circumstances or any other events affections such statements and information other than as required by applicable laws, rules and regulations.

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