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Antilles Gold Limited (“Antilles Gold” or the “Company”) (ASX: AAU, OTCQB: ANTMF) is pleased to advise results from the first 7 of 25 shallow diamond drill holes in a 2,000m in-fill program on the Nueva Sabana oxide deposit in central Cuba, which was completed in July 2024.
The aim of the program was to increase the Indicated Resources in the Initial Mineral Resource Estimate advised to ASX on 6 March 2024.
HIGHLIGHTS
Gold Domain – Nueva Sabana
Copper Domain – Nueva Sabana
Sampling Techniques and Data are set out in the JORC Code 2012 Edition Template attached.
NUEVA SABANA GOLD-COPPER MINE
- The in-fill results continue the excellent grades for both gold and copper in the oxide deposit that were incorporated in the Scoping Study for the first stage of the proposed Nueva Sabana gold-copper mine reported to ASX on 7 May 2024.
- Results from the remaining 18 holes are expected by the end of this month.
- An updated Mineral Resource Estimate (“MRE”) for the proposed mine is expected to be completed within two weeks of receiving these results, after which the pit design and mine schedule will be updated, followed by a Pre-Feasibility Study in September 2024.
- The Nueva Sabana oxide deposit is metallurgically simple, and the mine is being planned as a copper project which will benefit from the high-grade gold cap during initial operations.
- Metallurgical test work by Blue Coast Research Laboratories in Canada has indicated a gold recovery of 85% from a simple rougher flotation circuit, and a concentrate of 70.2 g/t Au.
- A copper recovery of 84.5% yielded concentrate grades of 27% Cu from a rougher and cleaner circuit, which has formed the basis of the process design criteria for the Nueva Sabana concentrator.
- Planning and permitting for the proposed mine is well advanced.
- Total development costs are estimated to be ~US$30 million including ~US$5 million of pre- development and concession acquisition costs, and ~US$25 million for mine construction based on quotations for site works, industrial buildings, and a turnkey offer for the design and construction of the concentrator and associated power station.
- The project requires minimal pre-stripping and will not involve the purchase of a mining fleet which is to be hired from the Cuban subsidiary of an international supplier.
- Finance for the mine construction is being negotiated in the form of an advance on concentrate purchases by an international commodities trader.
- The Nueva Sabana project, which is being developed by the 50% owned joint venture company, Minera La Victoria SA, is expected to be development-ready in October 2024.
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This article includes content from Antilles Gold, licensed for the purpose of publishing on Investing News Australia. This article does not constitute financial product advice. It is your responsibility to perform proper due diligence before acting upon any information provided here. Please refer to our full disclaimer here.
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Antilles Gold Limited
Investor Insight
Antilles Gold’s gold and copper projects in Cuba are underpinned by a strong partnership with a Cuban Government-owned mining company that effectively fast-tracks and de-risks its promising projects, offering a strategic value proposition for investors.
Overview
Antilles Gold (ASX:AAU,OTCQB:ANTMF) is an Australian mining company focused on gold and copper projects in Cuba through a joint venture with the Cuban Government’s mining company, GeoMinera. This partnership has resulted in rapid project permitting and access to several new development opportunities for the Australian company.
Antilles Gold offers strong growth potential through two near‐term development projects, Nueva Sabana and La Demajagua, and two exploration projects, the El Pilar porphyry system and Sierra Maestra copper concessions.
Joint venture projects in Cuba
Nueva Sabana is a near‐term, gold‐copper mine development within the joint venture with GeoMinera, and is expected to initially produce around 70 grams per tonne (g/t) gold in a concentrate from a high‐grade gold cap followed by ~27 percent copper concentrate with gold credits. The project development strategy includes the completion of a feasibility study in September 2024, and the commencement of construction soon after.
The second proposed development is the La Demajagua open-pit mine, which is likely to produce ~50,000 tonnes per annum (tpa) of gold arsenopyrite concentrate (32 g/t gold, 27 percent arsenic), and ~10,000 tpa of gold antimony concentrate (28.8 g/t gold, 48 percent antimony, 1,200 g/t silver) for nine years. According to the plans, construction will commence in late 2025, with commissioning in mid‐2027. La Demajagua will also include the construction of a concentrate processing facility to treat La Demajagua’s gold arsenopyrite concentrate, with the capacity to produce 50,000 oz gold per year in dore, which will further increase JV profit and cashflow.
The joint venture’s two exploration projects comprise the 720‐hectare El Pilar Concession in Central Cuba covering a cluster of three copper‐gold porphyry deposits (El Pilar, Gaspar and San Nicholas), the adjacent 17,000 hectare San Nicholas concession with porphyry style mineralisation, and two concessions totaling 52,600 hectares within the producing Sierra Maestra copper belt in southeast Cuba (La Cristina and Vega Grande), with both indicating of porphyry deposits highly prospective for copper, gold and molybdenum.
Surface mineralisation at El Pilar
Antilles Gold has completed a technical evaluation of the El Pilar porphyry system which was advised to ASX on 15 February 2024.
The joint venture intends to invest part of the surplus cash flow from the Nueva Sabana mine to fund the exploration of major copper targets, including the El Pilar copper‐gold porphyry system, and those in the Sierra Maestra copper belt.
Company Highlights
- Antilles Gold Limited is an Australian mining company listed on the ASX (AAU) and OTCQB (ANTMF).
- The company is focused on gold and copper projects in Cuba through a 50:50 joint venture with the Cuban Government’s mining company, GeoMinera, opening new development opportunities for Antilles and de-risking permitting processes.
- The joint venture is engaged in four development projects: 1) Nueva Sabana gold‐copper mine; 2) La Demajagua gold mine; 3) El Pilar porphyry copper project; and 4) Exploration of two concessions within the Sierra Maestra copper belt. Of these, Nueva Sabana and La Demajagua offer near‐term development opportunities.
- Nueva Sabana is a near‐term gold‐copper mine development that is expected to generate strong cash flow from concentrate sales from end‐2025.
- La Demajagua is an open-pit mine gold project commencing construction in Q4 2025 with commissioning in mid‐2027.
- El Pilar and Sierra Maestra concessions are exploration projects.
- Investment in Cuba offers several benefits, including richness in minerals, low operating costs and royalties, stable government and regulations, several investment incentives and the availability of a skilled workforce.
Key Projects
Nueva Sabana Project
Prominer Mining Technology will supply Nueva Sabana concentrator
Nueva Sabana is the company’s near‐term, gold‐copper mine development project. The project is held in the 50:50 joint venture with GeoMinera. It will be an open-pit mine developed on the oxide zone overlaying the El Pilar porphyry copper deposit in central Cuba.
Results from 24,000 metres of historical drilling, 1,800 metres drilled in 2022, and the 10,000 metres drilled in 2023 have established a mineral resource estimate (MRE). Results of a scoping study were advised to ASX on 7 May 2024, and a feasibility study is in progress for the proposed development which will be followed by a 12‐month construction phase.
Drilling has shown outstanding grades for gold and copper, and increasing lateral and vertical boundaries of the copper domain.
The proposed mining rate for the project will be 500,000 tpa of ore with a low waste‐to‐ore ratio. The anticipated initial production of 70 g/t gold concentrate will be followed by a ~27 percent copper concentrate with gold credits.
The estimated project cost is approximately US$33 million, of which approximately US$6 million is shareholders equity with the balance of $27 million expected to be funded through an advance on purchases of the concentrates by an international commodities trader.
Chinese engineering group, Prominer Mining Technology, which has extensive experience in designing and constructing gold and copper concentrators, is expected to supply the crushing and flotation circuits for the Nueva Sabana mine.
La Demajagua Project
La Demajagua involves the development of a gold‐antimony‐silver deposit as an open-pit mine by the joint venture company, Minera La Victoria.The project is located within a 900 hectare mining concession on the Isle of Youth, 60 nautical miles from mainland Cuba. The project site is 35 kilometres from the port city of Nueva Gerona and enjoys excellent infrastructure in terms of accessibility by highway, and availability of water, electricity and fiber optic cable.The project has an MRE of 905,000 oz gold equivalent for the open-pit operation. The MRE was calculated from 29,000 metres of drilling undertaken by the JV, and selective results from about 50,000 metres of historic drilling and revised after the receipt of additional antimony assays. The project expects mining of about 815,000 tpa of ore to produce two concentrates: 50,000 tpa of gold‐arsenopyrite and 10,000 tpa of gold‐antimony‐silver for nine years.
The project will also include a concentrate processing facility to produce gold doré from the gold-arsenopyrite concentrate. The facility will comprise a 50,000‐tpa two‐stage fluidized‐bed roaster, a carbon-in-leach (CIL) circuit, and an antimony recovery circuit. The overall production target is 75,000 oz gold equivalent per year. Chinese engineering firm BGRIMM Technology Group, which has extensive experience in designing and constructing roasters, is expected to supply the process plant on a turnkey basis.
The total development cost is estimated at US$165 million, expected to be funded by US$75 million of equity, which includes contributions by a third shareholder in the project, and the balance of US$90 million in debt. The life‐of‐mine cash surplus is estimated at ~US$600 million, with an NPV of ~US$330 million based on US$1,800/oz gold, and US$13,000/t antimony.
A revised scoping study including the concentrate processing facility is expected in December 2024, and construction is anticipated to commence in late 2025, with commissioning targeted for mid‐2027.
El Pilar Copper‐Gold Porphyry System Project
El Pilar is an exploration project of a cluster of three copper‐gold porphyry deposits: El Pilar, Gaspar and Camilo. The project comprises a 752 hectare exploration license and an adjacent 17,000 hectare reconnaissance permit covering the San Nicholas copper targets.
The project site benefits from established infrastructure with close access to a major highway, high‐tension power, and a 60 kilometre rail link to Palo Alto port.
Previous mapping, soil sampling, ground magnetics, an aeromagnetic survey and 24,000 metres of shallow drilling confirmed the existence of copper‐gold mineralization and identified the exposures as a potentially large, leached porphyry system. The surface exposures at El Pilar are leached phyllic caps to a cluster of copper‐gold porphyry cores. The extent of surficial hydrothermal alteration indicates the porphyry intrusions have large dimensions, and potential depths greater than 1,000 metres.
Ground magnetics and induced polarization surveys in early 2023 have confirmed a cluster of three potentially large porphyry intrusives – El Pilar, Gaspar and Camilo. A 10‐hole initial program has demonstrated positive results with good copper intercepts in porphyry‐style veining and has indicated the proximity of drilling to the core of El Pilar porphyry intrusive. In particular, drill hole PDH‐004A assayed 1.23 percent copper over its length of 134 metres from 49 metres.
Sierra Maestra Copper Belt Project
The project is an exploration project covering two highly prospective concessions for copper, gold and molybdenum in the Sierra Maestra copper belt in southeast Cuba. It includes a 3,600-hectare geological investigation license in La Cristina, and the adjoining 49,000‐hectare Vega Grande reconnaissance license.
The copper belt spans more than 200 kilometres of Cretaceous‐age geology intruded by Eocene stocks, which are the source of widespread gold and base‐metals mineralization. The project is near the El Cobre mine which is the oldest operating copper mine in the Americas. The concessions incorporate a series of copper‐gold‐molybdenum zones that display significant footprints of hydrothermal alteration normally associated with potentially large porphyry systems.
An extensive, two‐year prospecting program will be carried out on the two concessions, commencing in Q4 2024, to identify drill targets.
Management Team
Brian Johnson – Executive Chairman
Brian Johnson is a graduate of civil engineering from the University of Western Australia and a member of the Institute of Engineers, Australia. He has rich experience in the construction and mining industries in Australia, Southeast Asia and North America. He was instrumental in establishing successful companies in the iron ore and coal sectors. Previously, he has served as a director of two listed gold producers, and of companies with stock exchange listings in London, New York, Vancouver and Australia.
James Tyers – Chief Executive Officer
James Tyers is a member of the AusIMM and has more than 30 years of experience in the mining industry, holding senior management roles in gold and iron ore operations. He has been associated with the Palm Springs Gold Mine in the Kimberley region of Western Australia, and the Cornishman Project, a JV between Troy Resources and Sons of Gwalia. He has experience developing and operating iron ore projects in the mid‐west of Western Australia. He was responsible for developing the Las Lagunas Project and is the project director for the La Demajagua gold mine in Cuba.
Ugo Carlo – Non‐executive Director
Ugo Carlo has more than 30 years of experience in the Australian mining industry. Throughout his career, he has served in several senior leadership roles at Rocklands Richfield, Austral Coal and Conzinc Rio Tinto Australia Group. He is also a former director of the Port Kembla Coal Terminal, the New South Wales Joint Coal Board, and interim chairman of the New South Wales Minerals Council.
Angela Pankhurst – Non‐executive Director
Angela Pankhurst has more than 20 years of experience as an executive and non‐executive director, primarily in the mining industry. She has been a senior executive for companies with projects in Kazakhstan, Nigeria, Vietnam, South Africa and Australia. She has held senior leadership positions at Antilles Gold and Central Asia Resources. She is currently a director of Consolidated Zinc and a director of Imritec.
Tracey Aitkin – Chief Financial Officer
Tracey Aitkin is a professional member of CPA Australia and has more than 30 years of rich experience in finance, administration and staff management across a range of industries, including mining, manufacturing, retail, transport and agriculture. She joined the company in 2009 and was named CFO in 2010.
Dr. Jinxing Ji – Technical Director
Dr. Jinxing Ji is a seasoned metallurgist with six years of research experience in universities and 26 years of practical experience in the mining industry related to gold, silver, copper, zinc and lead. His broad experience includes due diligence, metallurgical test work, pre‐feasibility study, feasibility study, detailed design, plant commissioning support, and operational support for projects in Turkey, Greece, Canada, China, Romania, Brazil and Papua New Guinea.
Steve Mertens – Mining Director
Steve Mertens is a mining engineer with more than 20 years of industry experience across a range of commodities, including nine years based in Latin America. He has been associated with the Goro Nickel Project in New Caledonia and the Mina de Cobre Project in Panama. Prior to his current role as general manager for the Minera La Victoria JV company, he was the mining manager for Antilles Gold’s Las Lagunas operation in the Dominican Republic.
Chris Grainger – Exploration Director
Chris Grainger holds a PhD in economic geology from the University of Western Australia. He is an Australian geologist with more than 25 years of international experience with involvement in grassroots and brownfield exploration, as well as resource definition and development, with a focus on precious and base metals in South and Central America and the Caribbean. He has been associated with Continental Gold’s Buritica gold‐silver project, and Cordoba Minerals’ Alacran copper‐gold project.
Rio Silver
Investor Insight
Rio Silver’s value proposition leverages a wholly owned 4,300 hectares of mineral concessions in a historic Peruvian mining district, a management team holding a 29 percent stake and over two decades of local experience, extensive exploration data and promising historical drill results.
Overview
Rio Silver (TSXV:RYO) is a precious metals mining and exploration company with a focus on the acquisition, exploration and development of precious metals deposits in South America. The company is currently focused on advancing its 100 percent-owned Niñobamba silver-gold project in Peru. The company has decades of experience navigating the mining regulatory landscape of Peru and considers itself to be well-positioned for the coming mining cycle.
Rio Silver’s flagship Niñobamba property is located in the Department of Ayacucho about 330 kilometers southeast of Lima. The 4,300-hectare property is wholly owned by the company and the project is drill ready. The Niñobamba project partially comprises a 2,200 hectare property which was previously owned by Newmont Mining (NYSE:NEM) and Southern Peru Mining. The balance was held by AngloGold Ashanti and Bear Creek Mining but has since been strategically acquired and consolidated into Rio Silver’s property.
The Ninobamba project engulfs a collapsed caldera, an ancient volcano, where the Niñobamba North and South zones were mineralized in a hot spring environment within the wall rock of the caldera surrounded by areas that contain high-sulfidation mineralization with near surface silver and gold deposits modeled for Rio Silver using leapfrog 3D software. The neighbouring Jorimina deposit, 6.5 kilometers to the west, where Newmont spent more than US$7 million, concluded an internal, positive, preliminary economic assessment, detailing a predominantly gold-rich, low to mid-sulfidation deposit found in the floor structure of this collapsed caldera.
The company’s management and advisory team is made up of experienced industry veterans, some with as many as 25 years of experience working in Peru. The team has an in-depth understanding of the regulatory processes associated with mining exploration in the country.
To date, Rio Silver and other historical operators have completed US$10 million in exploration expenditure on the Niñobamba property. The company has low overhead expenditure and strong alliances in Peru that are helping it achieve new initiatives for enhanced sustainability.
The company now holds a 3 percent net smelter return (NSR) royalty with guaranteed minimum payments from a recent property sale and these initiatives enable more exploration by helping Rio Silver with sustaining costs.
Company Highlights
- Rio Silver owns six mineral concessions covering 4,300 hectares of wholly-owned land in a historic Peruvian mining district.
- The property was historically surrounded by big-name miners (Newmont, Southern Peru Copper) and is now wholly owned by Rio Silver.
- Experienced management team with more than two decades of mining experience in Peru.
- Extensive trenching completed at the Niñobamba zone.
- The management team holds a 29 percent stake in the company.
- US$10 million in exploration expenditure completed to date by Rio and historical operators.
- All the historical data has been collected from previous owners.
- Historical drilling on the Niñobamba property intersected 130 meters of 2.55 oz/t silver and 72.3 meters of 1.19 g/t gold.
- New gold zone identified include 56 meters at 98.9 g/t silver and 21.77 meters at 1.32 g/t gold, 102.46 g/t silver.
Key Project
Niñobamba Silver Project, Peru
Located 330 kilometers southeast of Lima in the Department of Ayacucho, the Niñobamba property is 100 percent wholly owned by Rio Silver. The property includes six mineral concessions covering 4,300 hectares. The district has historically been mined by major international gold miners including Newmont Goldcorp and Southern Peru Mining.
The property was initially explored by AngloGold (JSE:ANG) in 2001. Anglo drilled five widely-spaced core holes totaling 861 meters focusing in an area of intense hydrothermal surface alteration. AngloGold’s drilling highlights included assay results of 87.0 grams per tonne (g/t) silver over a drilled interval of 130 meters starting from a depth of 9 meters reported from drill hole DDH-2 and 54.0 g/t silver over a drilled interval of 96 meters starting from 23 meters reported from the AN-04 drill hole.
Adjacent zones acquired from major miners
In 2016, Rio Silver consolidated its property by acquiring the surrounding 2,200 hectares of adjoining land from Newmont Mining and Southern Peru Copper. These included the 2,000 hectare Jorimina zone, which is located about 6.5 kilometers west of the Niñobamba and is believed to be part of the same high-sulfidation silver-gold system identified in the main Niñobamba zones. Along with the property came an extensive database of information including results and reports from an exploration program by the mining majors which encompassed 553 hectares. Newmont’s exploration included mapping, 2,147 rock samples and induced polarization geophysics. This historic exploration indicated a gold anomalous area of more than 700 meters by 1,000 meters as well as four strong chargeability anomalies coinciding with gold-silver in rock anomalies.
Newmont’s historic data includes samples of 17.4 meters of 3.06 g/t gold and 200 meters of 0.26 g/t gold. Historic exploration in the Jorimina zone conducted by Newmont in 2009 and 2010 shows highlights of 72.3 meters of 1.19 g/t gold starting at 53-meter depth.
In 2024, Rio Silver completed a surface access agreement with the local community for one year at the Jorimina project after an environmental impact study and community workshops were also completed to represent the final steps of the drill permitting application process.
Exploration and trenching results
To date, extensive trenching has been completed by Rio Silver on the Niñobamba property. In 2012, the company began conducting surface trenching in areas proximate to historical drilling locations. Exploration has focused primarily on the north and south zones of silver mineralization approximately 400 meters apart with variable thicknesses. Surface sampling near trenches in the north zone returned highlights of 1.32 g/t gold and 102.46 g/t silver. Sampling near trenches in the south zone returned highlights of 42.62 meters of 130.98 g/t silver. Additional highlights can be found on Rio Silver’s website.Management Team
Chris Verrico - President, CEO, and Director
Chris Verrico has extensive experience with rural-remote infrastructure construction and contract mining throughout BC, the Yukon, Alaska and Nunavut. He has been a director for a dozen startup junior mining companies, most of which have become public companies. Verrico has managed numerous exploration projects in North America, Mexico and throughout western South America. He is currently the director of Juggernaught Exploration.
Christopher Hopton - CFO
Christopher Hopton has over 25 years of experience in senior accounting and financial roles. He is currently the CFO of Sirona Biochem.
Steve Brunelle - Chairman
Steve Brunelle is the former officer and director of Corner Bay Silver, which was acquired by Pan American Silver. He has 35 years of experience in mineral exploration throughout the Americas and is currently an Officer and Director for several TSXV companies.
Jeffrey J Reeder - Advisor
Jeffrey J Reeder is a professional geologist with more than two decades of experience working in Peru. Reeder possesses an in-depth understanding of the rules, practices, and processes involved in conducting mining and exploration in the country and is currently the president of Peruvian Metals that owns a custom toll milling facility in northern Peru.
Jim McCrea – Adviser
Jim McCrea has more than 30 years’ experience in exploration, mining geology and mineral resource estimation. He worked for junior mining/exploration companies and engineering companies SRK and Snowden. His geological expertise ranges from technical review and due diligence to resource estimation and feasibility studies. McCrea has experience in a range of commodities, but primarily gold, silver and copper, with particular focus on North and South America. He has performed ore body modeling and resource estimation for the successfully targeted takeover company Cumberland Resources by Agnico-Eagle Mines. More recently, McCrea completed many mineral resource estimations underpinning acquisitions such as Minera San Cristóbal S.A. of Bolivia, Arena Minerals and Montan Mining, to mention a few.
Edward J Badidaa, - Director
Edward J Badidaa is a professional accountant with over 40 years of financial management and corporate governance experience. He currently serves as a director for Patagonia Gold.
Richard Mazur - Director
Richard Mazur is the co-founder and past managing director of RLG International operating in over 30 countries worldwide with more than 300 employees.
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