GB Minerals Ltd. Announces Results of Annual General and Special Meeting of Shareholders

Vancouver, British Columbia--(Newsfile Corp. - September 20, 2017) - GB Minerals Ltd. (TSXV: GBL) (the "Company") is pleased to announce that all the resolutions put to shareholders at the Company's annual general and special meeting held on September 20, 2017 (the "Meeting") were duly passed with over 90% of the votes in favour of the resolutions.

At the Meeting, the Company's shareholders ratified and approved an advance notice policy which had been adopted by the board of directors of the Company on July 24, 2017 (the "Advance Notice Policy"). The Company's shareholders also approved an amendment to the articles of the Company to include the provisions of the Advance Notice Policy. The purpose of the Advance Notice Policy is to provide shareholders, directors and management of the Company with a clear framework for nominating directors of the Company at a shareholders' meeting. The Advance Notice Policy, among other things, includes a provision that requires advance notice to the Company in certain circumstances where nominations of persons for election to the board of directors are made by shareholders of the Company. The Advance Notice Policy fixes a deadline by which director nominations must be submitted to the Company prior to any annual or special meeting of shareholders and sets forth the information that must be included in the notice to the Company. No person will be eligible for election as a director of the Company unless nominated in accordance with the Advance Notice Policy.

In the case of an annual meeting of shareholders, notice to the Company must be made not less than 30 days and not more than 65 days prior to the date of the annual meeting; provided, however, that, in the event that the annual meeting is to be held on a date that is less than 50 days after the date on which the first public announcement of the date of the annual meeting was made, notice may be made not later than the close of business on the 10^th day following such public announcement. In the case of a special meeting of shareholders (which is not also an annual meeting) called for the purpose of electing directors (whether or not called for other purposes), notice to the Company must be made not later than the close of business on the 15^th day following the day on which the first public announcement of the date of the special meeting was made.

The articles of the Company, as amended, shall be made available under the Company's profile at www.sedar.com and on the Company's corporate website www.gbminerals.com.

ON BEHALF OF THE BOARD

Luis da Silva
President and Chief Executive Officer

For further information please contact:

Luis da Silva
President and Chief Executive Officer
Telephone: + 1 (604) 569-0721

Angel Law
Chief Financial Officer and Corporate Secretary
Telephone: +1 (604) 569-0721

ABOUT GB MINERALS LTD.

On September 14, 2015, the Company announced the results of, and filing on SEDAR, of a new feasibility study on its Farim phosphate project entitled "NI 43-101 Technical Report On the Farim Phosphate Project" (the "2015 Feasibility Study").

The Farim phosphate project is located in the northern part of central Guinea-Bissau, West Africa, approximately 25 kilometres south of the Senegal border, approximately 5 kilometres west of the town of Farim and some 120 kilometres northeast of Bissau, the capital of Guinea-Bissau, on a 30.6 km² mining lease license granted by the Government of Guinea-Bissau to the Company's wholly owned subsidiary, GB Minerals AG, in May 2009. The Company also holds a mining license in relation to the Farim phosphate project.

The Farim phosphate project consists of a high grade sedimentary phosphate deposit of one continuous phosphate bed which extends over a known surface area of approximately 40 km². It is estimated to contain measured and indicated resources of 105.6 million dry tonnes at a grade of 28.4% P₂O₅ and additional inferred resources of 37.6 million dry tonnes at 27.7% P₂O₅. The measured and indicated resources include 44.0 million dry tonnes of reserves based on a 25 year mine plan at 1.75 million tonnes per annum ("mtpa") of mine production at the following run of mine grades: 30.0% P₂O₅, 2.6% Al₂O₃, 41.0% CaO, 4.7% Fe₂O₃, and 10.6% SiO₂. The phosphate ore will be beneficiated for a final phosphate rock concentrate production of 1.32 mtpa at a 34.0% P₂O₅ grade at 3% moisture.

The 25 year mine plan also assumes a beneficiation process that involves scrubbing (both drum and attrition) followed by particle sizing to remove the fraction under 20 µm. This new beneficiation process will result in a 34.0% P₂O₅ product grade, mass recovery of 75.5% and 78.4% P₂O₅ recovery confirmed by a pilot scale test on a one tonne sample that took place in May 2015. After passing through the process plant, the final production of phosphate concentrate, based on 1.75 mtpa of run of mine feed, will be 1.32 mtpa. The life of mine operating costs are approximately US$52.13 per tonne of final concentrate. The initial capital cost for the project is estimated at US$193.8 million and does not include owner's costs which amount to US$11 million and include items such as project insurance, resettlement and owner's team costs. Owner's costs have been included in the financial analysis.

For additional information, please visit us at www.gbminerals.com.

QUALIFIED PERSON

The Company's Qualified Person is Dan Markovic, P. Eng., who has reviewed and approves this press release.

FORWARD LOOKING STATEMENTS

Certain information in this news release relating to the Company is forward-looking and related to anticipated events and strategies. When used in this context, words such as "will", "anticipate", "believe", "plan", "intend", "target" and "expect" or similar words suggest future outcomes. Forward-looking information contained in this press release includes, but may not be limited to, the business plans, statements or information relating to the anticipated development activities of the Company, the Farim Project (including the quantity and quality of mineral resource and mineral reserve estimates), the potential to upgrade inferred mineral resources, the ability of the Company to develop the Farim Project into a commercially viable mine and the proposed new plans relating thereto regarding operations and mine design, estimates relating to tonnage, grades, recovery rates, future phosphate production, future cash flows, life of mine estimates, expectations regarding production and estimates of capital and operating costs. By their nature, such statements are subject to significant risks and uncertainties that may cause actual results or events to differ materially from current expectations. Readers are cautioned not to place undue reliance on forward-looking information as actual results could differ materially from the plans, expectations, estimates or intentions expressed in the forward-looking information. Forward-looking information speaks only as of the date on which it is made and, except as may be required by applicable law, the Company disclaims any obligation to update or modify such forward-looking information, either as a result of new information, future events or for any other reason.

Disclosure herein of exploration information and of mineral resources and mineral reserves is derived from the 2015 Feasibility Study. Information relating to "mineral resources" and "mineral reserves" is deemed to be forward-looking information as it involves the implied assessment based on certain estimates and assumptions that the mineral resources and mineral reserves can be profitable in the future. Such estimates are expressions of judgment based on knowledge, mining experience, analysis of drilling results and industry practices. Valid estimates made at a given time may significantly change when new information becomes available. By their nature, mineral resource and mineral reserve estimates are imprecise and depend, to a certain extent, upon statistical inferences which may ultimately prove unreliable. If such estimates are inaccurate or are reduced in the future, this could have a material adverse impact on the Company. Accordingly, readers should not place undue reliance on forward-looking information. Mineral resources that are not mineral reserves do not have demonstrated economic viability. Due to the uncertainty that may be attached to inferred mineral resources, it cannot be assumed that all or any part of an inferred mineral resource will be upgraded to an indicated or measured mineral resource as a result of continued exploration.

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