Miranda Gold Corp
15381 - 36th Avenue
South Surrey, BC V3Z 0J5
Tel: (604) 417-4653
Fax: (604) 648-8706
TSX Venture Exchange Symbol: MAD
Frankfurt and Berlin Stock Exchange Symbol: MRG
NASD OTC Bulletin Board Exchange Symbol: MRDDF
|Jun 18, 2018|
Miranda Gold Signs Option Agreement On Advanced Gold-Copper Project In Colombia
Vancouver, BC, Canada -- June 18, 2018 -- Miranda Gold Corp. ("Miranda") (TSX-V: MAD) is very pleased to announce it has signed an option agreement on the Cauca project - an advanced gold-copper project in the Miocene-age mineral belt of southern Colombia. The Cauca project is in the Cauca department, 47km south of the department capital Popayan - in the Almaguer Mining District - and consists of one title and one application, for a total land area of 1,808 hectares. The Miocene Mineral Belt containing Cauca extends from Colombia into Ecuador, and is characterized by numerous well-known districts and discoveries including Solgold's Cascabel Project less than 40km from the Colombia border. Cauca is within one of the least explored terrains in Colombia. Cauca will join Miranda's Mallama Project for our second project in this important region.
The agreement is between Miranda and Carboandes, a private Colombian coal producer active in the central Andes. Carboandes drilled a significant gold-copper-silver deposit called "La Custodia" on the Cauca project in 2010.
Drilling in La Custodia and other targets (62 core holes for 22,047m total) on the project shows gold-copper porphyry mineralization with a persistent overprint of epithermal gold and carbonate-gold-base metal veins. Carboandes produced an internal resource estimate from the La Custodia deposit of 700,000 ounces at 0.66 g Au/t; but Miranda believes vertical epithermal veins are significantly under-sampled by wide-spaced drilling, and a more accurate representation of higher-grade veins in the deposit may provide a higher estimated resource grade.
Of particular interest to Miranda in the La Custodia deposit, are local intercepts containing epithermal mineralization that range from 2m at 28.4 g Au/t (2 g Ag/t) up to 2m at 1,095 g Au/t (257g Ag/t) superposed on lower-grade porphyry-style veinlets. Miranda has determined that core intercepts over 1 g Au/t consistently show high-angle epithermal veins sub-parallel to core, cross-cutting porphyry-style veins. It is likely that numerous untested veins or vein extensions occur between the current drill-holes that are spaced at an average of 100m to 200m.
Important "takeaways" for the Cauca acquisition are:
Structural controls and porphyry-emplacement are related to fault and fracture systems of the Cauca-Romeral Mega-structure or Suture zone. The predominant lithologies are continental sediments intruded by hypabyssal diorite and quartz-diorite porphyry. Alteration is external propylitic to phyllic to internal potassic in the core of the intrusives. Epithermal veins trend predominantly northwest and secondarily northeast and have phyllic and potassic selvages. The La Custodia is a gold-copper porphyry deposit with a persistent low-sulfidation epithermal overprint, including gold-silver quartz veins, veinlets and stockwork, and quartz-carbonate veins with base metals and gold.
The epithermal mineralization shows classic dark ginguro texture and abundant fine-to-coarse free gold. Fluid inclusion studies show temperatures of vein formation at 400 to 500°C for Type A and Type B porphyry-style veins, and 150°C for epithermal veins, indicating specific stages for vein formation. Porphyry mineralization was probably followed by carbonate-gold-base metal veins, and then low-temperature gold - silver veins.
The project has several exploration targets. Exploration targets similar to La Custodia include La Esperanza and El Limón - both with porphyry-gold-copper combined with epithermal-type mineralization. The Hueco Hondo prospect is 3.8km from La Custodia - midway between La Custodia and La Esperanza -- and is characterized by parallel northwest-trending epithermal veins that show reconnaissance channel sample values up to 127 g Au/t. The Hueco Hondo target is important in that it may illustrate the prevalent orientation of veins on the project, including the orientation of potentially under-sampled veins in La Custodia. Hueco Hondo consists of multiple parallel high-grade veins without a porphyry component, further supporting a persistent epithermal overprint.
Several gold-arsenic soil anomalies occur across a significant part of the 1,808 hectare property - but only two anomalies have been drilled to date. Drilling in one of these soil anomalies resulted in the identification of the La Custodia deposit. Open soil anomalies occur between La Custodia and Hueco Hondo, east of La Custodia, and north, south and east of La Esperanza, which is seven kilometers north of La Custodia. Several high level stream sediment anomalies have not been followed up with prospecting or soil grids.
Historic Internal Valuation Studies:
Carboandes discovered the La Custodia in 2010, and produced a project technical report. They have conducted internal studies in support of resource estimations, preliminary economic evaluations, metallurgy, and mining studies. The internal resource estimate of the La Custodia - completed and internally reported in 2015 -- provided a resource of 700,000 ounces gold at 0.66 g Au/t. Within this resource, using a plus-0.3 g Au/t cut-off, a three-dimensional "grade-shell" was modeled and used for a trial pit optimization. Internal to the pit, the gold-grade shell contains estimates of 307,450 ounces of gold, 1,323,000 ounces of silver, and 80,897,000 pounds of copper from a volume of 34 million tons of mineralized material - at prices significantly below current prevailing prices. Additional plus-0.3 g Au/t grade shells occur both below and adjacent to the pit shell. The vendor's internal metallurgical work shows a 95% gravimetric recovery of gold in the oxide zone and an 85% recovery of gold; 80% recovery of copper; and 60% recovery of silver combining gravity with flotation, in the sulfide zone.
The optimization utilized very preliminary assumptions for mining costs for an open-pit blast, shovel, and truck operation with a production rate of 5,000 tons per day. A simple inverse distance-squared isometric projection appropriate to generally uniformly distributed mineralization, with cumulative frequency grade capping was used to model grades. The optimization used metal prices of $1,254 per ounce gold, $15.80 ounce silver, and $2.05 per pound copper and recovery by gravimetric and conventional flotation milling. Recoveries were estimated from multiple bench-scale and larger tests performed by independent labs. The Carboandes internal report refers to all of its estimated resource as "inferred" but this should be considered a general term and not completed in accordance with CIM definitions of mineral resource categories.
No other resource estimates pre-date or post-date the 2015 estimate, and a qualified person has not done enough work to verify or classify this historical resource estimate as current mineral resources or reserves. Therefore, Miranda is not treating the information as a current mineral resource or reserve. The internal work was conducted using professional internal company standards and is considered reliable for its level of detail, but Miranda has not independently reviewed and substantiated the work - Miranda is using the internal Carbonandes work only to provide an estimate of exploration potential and as rationale to continue exploration. An independent qualified person will need to perform their own grade and resource modeling after additional drilling - and will do its own cost estimations and studies before preparing and filing an independent NI 43-101 technical report to support the mineral resource. Most important will be an accurate measurement and projection of higher grade epithermal-associated gold.
Importantly, Carboandes' internal pit design is contained within a small area of only 14 hectares of the total 1,808 hectare project area. The project is near the Pan-American Highway and secondary paved roads, the national power grid, and an airport. Topographic, elevation, social, and environmental aspects of the Project are favorable for exploration and development.
The Agreement provides Miranda a 60-day due diligence period before it becomes fully effective. The due diligence will start immediately.
Work completed on the Cauca project is summarized in the following table:
Significant drill intercepts are provided in the following table from the La Custodia deposit. Only intercepts greater than 0.5 g Au/t are shown. Values over 1 g Au/t consistently show some amount of epithermal quartz or quartz-carbonate veins, generally sub-parallel to core and thus the veins are probably near vertical.
Miranda believes that closer-spaced, and properly angled holes with respect to the vein trend, will better delineate the continuity and thickness of sub-vertical, higher gold grade epithermal veins that we believe are presently under-sampled on a volume weighted basis in the current La Custodia drill pattern and the La Custodia internal resource estimate.
** True thicknesses cannot be accurately estimated at this time, but generally, due to the nature of the deposit, drill thicknesses are thought to be close to true thicknesses.
Miranda has signed a definitive option agreement to earn up to 100% of the Cauca Project, in three phases, as follow:
Data disclosed in this press release have been reviewed and verified by Miranda's Chief Executive Officer, Mr. Joseph Hebert, C.P.G., B.Sc. Geology, and Qualified Person as defined by National Instrument 43-101.
Miranda is a gold exploration company active in Colombia. Miranda employs a prospect generator and joint venture business model. Miranda focuses on generating projects with world-class discovery potential, and then joint ventures multiple projects to maximize the chance of discovery, while reducing economic risk and shareholder dilution. Miranda has an ongoing relationship with IAMGold Corporation.
For more information related to Miranda contact Joseph Hebert, Chief Executive Officer at 1-775-340-0450 or email@example.com - www.mirandagold.com
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 contains forward-looking statements that are based on the Company's current expectations and estimates. Forward-looking statements are frequently characterized by words such as "plan", "expect", "project", "intend", "believe", "anticipate", "estimate", "suggest", "indicate" and other similar words or statements that certain events or conditions "may" or "will" occur. Such forward-looking statements involve known and unknown risks, uncertainties and other factors that could cause actual events or results to differ materially from estimated or anticipated events or results implied or expressed in such forward-looking statements. Such factors include, among others: the actual results of current exploration activities; conclusions of economic evaluations; changes in project parameters as plans to continue to be refined; possible variations in ore grade or recovery rates; accidents, labor disputes and other risks of the mining industry; delays in obtaining governmental approvals or financing; and fluctuations in metal prices. There may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Any forward-looking statement speaks only as of the date on which it is made and, except as may be required by applicable securities laws, the Company disclaims any intent or obligation to update any forward-looking statement, whether as a result of new information, future events or results or otherwise. Forward-looking statements are not guarantees of future performance and accordingly undue reliance should not be put on such statements due to the inherent uncertainty therein.
Notice to US investors:
U.S. investors are cautioned that mineral deposits on adjacent properties are not indicative of mineral deposits on our properties. We advise U.S. investors that the SEC's mining guidelines strictly prohibit information of this type in documents filed with the SEC.
This press release uses the terms "measured resources", "indicated resources" and "inferred resources", which are estimated in accordance with the Canadian National Instrument 43-101 and the Canadian Institute of Mining and Metallurgy Classification system. We advise investors that while those terms are recognized and required by Canadian regulations, the U.S. Securities and Exchange Commission does not recognize them. U.S. investors are cautioned not to assume that any part or all of mineral deposits in these categories will ever be converted into reserves. In addition, "Inferred resources" have a great amount of uncertainty as to their existence, and great uncertainty as to their economic and legal feasibility. It cannot be assumed that all or any part of an Inferred Mineral Resource will ever be upgraded to a higher category. Under Canadian rules, estimates of Inferred Mineral Resources may not form the basis of feasibility or pre-feasibility studies, except in certain exceptional cases. U.S. investors are cautioned not to assume that part or all of an inferred resource exists, or is economically or legally minable.
You can view the Next News Releases item: Thu Jun 21, 2018, Miranda's New Applications Provide A Regional-Scale Exploration Play Between Continental Gold's Buriticá And Anglogold Ashanti's Nuevo Chaquiro
You can view the Previous News Releases item: Tue Mar 20, 2018, Miranda Closes $1.5 Million Private Placement
You can return to the main News Releases page, or press the Back button on your browser.