Marengo Releases Results for Recent Sampling and Exploration Drilling at Rima Prospect

TORONTO, ONTARIO--(Marketwired - March 9, 2015) -

NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR FOR DISSEMINATION IN THE UNITED STATES

Marengo Mining Ltd. (TSX:MRN) (ASX:MMC) (POMSoX:MMC) ("Marengo") is pleased to announce the results of a recent sampling and drilling program at its Rima Prospect ("Rima"), as it continues to advance its Yandera copper project ("Project") in Papua New Guinea.

Rima is located approximately 700 metres to the northwest of the western edge of the Imbruminda resource area that forms part of the Yandera copper project (Figure 1). Rima was discovered in 2014 while geologists - following up on work completed in 2008 and 2009 - were mapping and sampling in creeks west of the Imbrum river. Surface sampling of some creeks in the Rima area revealed elevated copper content in grab and channel samples (Figure 2 and Table 1).

In late 2014, Marengo completed four drill holes (totalling 1004.6 metres) at Rima in search of higher grade copper mineralization to complement the current Yandera resource. The results (Tables 2-5) confirm the presence of higher grade mineralization, and one of the next phases of work is to constrain its limits.

Higher grade mineralization at Rima appears to be hosted in a phyllically altered structural domain within a broader zone of potassically altered porphyritic quartz diorite and granodiorite. Sheeted veins within these structural zones of phyllic alteration have a north-northwesterly strike and dip steeply to the west-southwest. Domains of these sheeted veins appear to occur in a northwesterly trending corridor (Figure 3).

"The results at Rima are encouraging and suggest the presence of additional domains of near-surface higher grade copper mineralization that collectively, may enhance the current Yandera resource," said Chief Executive Officer Pieter Britz.

"Given these encouraging results, we are not proceeding with the remainder of the previously announced 10-hole drill program. Rather, we are working towards completion of a more extensive field program during 2015, leading to a more comprehensive drill program in 2016. We remain enthusiastic about the potential of Rima and other similar prospects."

Drilling results:

Table 1. Results from Surface Samples at Rima. Coordinates are UTM in AGD 1966, Zone 55.

(1) "ppm" means parts per million.

Table 2. Significant Drill Results for YD560 (AZIM 134°, INCL -60°, TD 200.7 m)

(1) "g/t" means grams per tonne.

Table 3. Significant Drill Results for YD561 (AZIM 065°, INCL -65°, TD 263.4 m)

Table 4. Significant Drill Results for YD562 (AZIM 245°, INCL -65°, TD 300.6 m)

Table 5. Significant Drill Results for YD563 (AZIM 58°, INCL -65°, TD 239.9 m)

*CuEQ% means copper equivalent percentage and is calculated using spot prices of $1200/oz Au, $2.60/lb Cu, and $7.50/lb Mo, which results in in equation CuEQ% = Cu% + Au g/t*0.6731 + Mo%*2.885; and Marengo makes no assumptions about future metal prices.

Full drill results are available on our website.

To view Figure 1. Map of Yandera Project Area with Rima Prospect Area, visit the following link: http://media3.marketwire.com/docs/mar_fig1.jpg

To view Figure 2. Map of Recent Sampling at Rima, visit the following link: http://media3.marketwire.com/docs/mar_fig2.jpg

To view Figure 3. Vertical cross section through holes YD560, YD 561, YD 562, and YD 563. Copper results shown on the side of the drill trace. Legend: HGR: granodiorite; POD: porphyritic quartz diorite; BXi: breccia; PAN: porphyritic andesite, visit the following link: http://media3.marketwire.com/docs/mar_fig3.jpg

This news release does not constitute an offer to sell or the solicitation of an offer to buy any ordinary shares within the United States. The ordinary shares have not been offered and will not be registered under the United States Securities Act of 1933, as amended (the "1933 Act"), or any state securities laws. Accordingly, the ordinary shares may not be offered or sold in the United States or to U.S. persons (as such terms are defined in Regulation S under the 1933 Act) unless registered under the 1933 Act and applicable state securities laws or an exemption from such registration are granted.

Cautionary Statement Regarding Forward-Looking Information

This news release contains forward looking information. Such forward-looking information is often, but not always, identified by the use of words such as "seek", "anticipate", "believe", "plan", "estimate", "expect" and "intend" and statements that an event or result "may", "will", "should", "could", or "might" occur or to be achieved and any other similar expressions. In providing the forward-looking information in this news release, the Company has made numerous assumptions regarding: (i) the accuracy of exploration results received to date; (ii) anticipated costs and expenses; (iii) that the results of the feasibility study continue to be positive; and (iv) that future exploration results are as anticipated. Management believes that these assumptions are reasonable. Forward-looking information is subject to known and unknown risks, uncertainties and other factors that could cause actual results to differ materially from those contained in the forward-looking information, including a actual results of exploration. Some of these risks, uncertainties and other factors are described under the heading "Risks Factors" in the Company's annual information form available on the SEDAR website. Forward-looking information is based on estimates and opinions of management at the date the statements are made. Except as required by law, Marengo does not undertake any obligation to update forward-looking information even if circumstances or management's estimates or opinions should change. Readers should not place undue reliance on forward-looking information.

Factors that could cause actual results to vary materially from results anticipated by such forward-looking statements include the actual results of exploration activities, changes in market conditions, risks relating to international operations, fluctuating metal prices and currency exchange rates, and other risks of the mining industry. Although Marengo has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking statements, there may be other factors that cause actions, events or results not to be anticipated, estimated or intended. There can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Marengo undertakes no obligation to update forward-looking statements if circumstances or management's estimates or opinions should change except as required by applicable securities laws. The reader is cautioned not to place undue reliance on forward-looking statements. Statements concerning mineral reserve and resource estimates may also be deemed to constitute forward-looking statements to the extent they involve estimates of the mineralization that will be encountered if the property is developed. Reference is made to the most recent annual information form of Marengo filed with Canadian securities regulators which includes further discussion of the risk factors which may impact the business and operations of Marengo.

Scientific and technical information in this report including that relating to drilling intercepts and mineralization were prepared by Mr. John Mears. Mr. Mears, P. Geo is a Member of the Australasian Institute of Mining and Metallurgy and a full-time consultant of Marengo Mining Ltd.. Mr. Mears has sufficient experience which is relevant to the style of mineralization and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2004 Edition of the Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves (The JORC Code, 2004 Edition). Mr. Mears consents in writing to the issue of this report, to the extent of matters based on his information in the form and context in which it appears.

Except to the extent not set out herein, for a (i) summary description of rock types, geological controls and dimensions of mineralized zones, and the identification of any significantly higher grade intervals within a lower grade intersection; (ii) a summary of the relevant analytical values, widths and, to the extent known, the true widths of the mineralized zones; (iii) a summary description of the geology, mineral occurrences and nature of the mineralization found; and (iv) a summary description of the type of analytical or testing procedures utilized, sampled, sample size, the name and location of each analytical or testing laboratory used and any relationship of the laboratory to the issuer please refer to the Company's technical report filed on SEDAR and dated November 9, 2007. There is no drilling, sampling, recovery or other factors that could materially affect the accuracy or reliability of the data referred to herein.

For further information on the Project and the resources contained therein, please refer to the Company's Canadian NI 43-101 and Australian JORC technical report "Yandera Copper Project, Madang Province, Papua New Guinea" (dated April 2012) which is available on the Company's website and at the (Canadian) SEDAR website.