Founders Metals Announces Positive Metallurgical Test Work
Founders Metals (TSXV: FDR, OTCQX: FDMIF) has announced positive metallurgical test results for its Antino Gold Project in Suriname. The testing revealed excellent gold extraction rates averaging 94.9% for fresh rock and 95.3% for saprolite. The optimal primary grind size of P80 at 50 μm achieved 95.0% gold recovery. Comminution tests showed medium hardness levels consistent with other Guiana Shield gold deposits, with Bond Ball Mill Work Index averaging 13.2 kWh/t. The study also demonstrated negligible concentrations of deleterious elements and low acid consumption. Testing of historical tailings samples showed an average gold recovery of 96.8%.
Founders Metals (TSXV: FDR, OTCQX: FDMIF) ha annunciato risultati positivi dei test metallurgici per il suo Antino Gold Project in Suriname. I test hanno rivelato eccellenti tassi di estrazione dell'oro, che mediamente raggiungono il 94,9% per la roccia fresca e il 95,3% per il saprolite. La dimensione di granulometria primaria ottimale P80 di 50 μm ha ottenuto un recupero dell'oro del 95,0%. I test di frantumazione hanno mostrato livelli di durezza media in linea con altri giacimenti d'oro dello Scudo Guianese, con un indice di lavoro del mulino a palle di Bond che mediamente è di 13,2 kWh/t. Lo studio ha anche dimostrato concentrazioni trascurabili di elementi deleteri e un basso consumo di acido. I test su campioni storici di scarti hanno mostrato un recupero medio dell'oro del 96,8%.
Founders Metals (TSXV: FDR, OTCQX: FDMIF) ha anunciado resultados positivos de las pruebas metalúrgicas para su Antino Gold Project en Surinam. Las pruebas revelaron excelentes tasas de extracción de oro que promediaron el 94,9% para roca fresca y el 95,3% para saprolita. El tamaño de molienda primaria óptimo P80 de 50 μm logró una recuperación de oro del 95,0%. Las pruebas de conminución mostraron niveles de dureza media consistentes con otros depósitos de oro del Escudo Guayana, con un índice de trabajo en el molino de bolas de Bond que promedió 13,2 kWh/t. El estudio también demostró concentraciones negligibles de elementos dañinos y bajo consumo de ácido. Las pruebas de muestras históricas de relaves mostraron un promedio de recuperación de oro del 96,8%.
Founders Metals (TSXV: FDR, OTCQX: FDMIF)는 수리남의 Antino Gold Project에 대한 긍정적인 야금 시험 결과를 발표했습니다. 시험 결과, 신선한 암석에 대한 평균 금 추출률이 94.9%, 사프로라이트의 경우 95.3%로 뛰어난 것으로 나타났습니다. 최적의 1차 분쇄 크기인 P80 50 μm에서 95.0%의 금 회수가 달성되었습니다. 분쇄 시험에서는 다른 기아나 쉴드 금 매장지와 일치하는 중간 경도의 수준이 나타났으며, 본드 볼 밀 작업 지수가 평균 13.2 kWh/t로 측정되었습니다. 연구는 또한 유해 요소의 농도가 미미하고 산의 소비가 낮다는 것을 입증했습니다. 역사적인 폐기물 샘플 시험 결과 평균 96.8%의 금 회수가 확인되었습니다.
Founders Metals (TSXV: FDR, OTCQX: FDMIF) a annoncé des résultats positifs de tests métallurgiques pour son Antino Gold Project au Suriname. Les tests ont révélé d'excellents taux d'extraction de l'or, atteignant en moyenne 94,9 % pour la roche fraîche et 95,3 % pour le saprolite. La taille de broyage primaire optimale P80 à 50 μm a atteint un taux de récupération de l'or de 95,0 %. Les tests de comminution ont montré des niveaux de dureté moyens compatibles avec d'autres dépôts d'or du bouclier guyanais, avec un indice de travail au moulin à billes de Bond atteignant en moyenne 13,2 kWh/t. L'étude a également démontré des concentrations négligeables d'éléments nuisibles et une faible consommation d'acide. Les tests d'échantillons historiques de résidus ont montré une récupération moyenne de l'or de 96,8 %.
Founders Metals (TSXV: FDR, OTCQX: FDMIF) hat positive metallurgische Testergebnisse für sein Antino Gold Project in Surinam bekanntgegeben. Die Tests zeigten hervorragende Goldgewinnungsraten mit einem Durchschnitt von 94,9% für frisches Gestein und 95,3% für Saprolit. Die optimale Primärmahlgröße P80 bei 50 μm erzielte eine Goldausbeute von 95,0%. Zerkleinerungstests zeigten mittlere Härtegrade, die mit anderen Goldlagerstätten im Guiana-Schild übereinstimmten, wobei der Bond-Ball-Mill-Arbeitsindex im Durchschnitt 13,2 kWh/t betrug. Die Studie zeigte auch vernachlässigbare Konzentrationen schädlicher Elemente und einen geringen Säureverbrauch. Die Tests von historischen Rückstandsstreifen ergaben eine durchschnittliche Goldausbeute von 96,8%.
- High gold extraction rates: 94.9% for fresh rock and 95.3% for saprolite
- Strong tailings recovery rate of 96.8%, enabling potential low-cost mining opportunities
- Medium hardness levels (13.2 kWh/t) suggesting favorable economics in energy consumption compared to regional competitors
- Negligible deleterious elements and low acid consumption indicating cost-effective processing
- None.
Vancouver, British Columbia--(Newsfile Corp. - November 21, 2024) - Founders Metals Inc. (TSXV: FDR) (OTCQX: FDMIF) (FSE: 9DL0) ("Founders" or the "Company") announces metallurgical test results for its Antino Gold Project ("Antino" or the "Project") in southeastern Suriname. Testing was focused on the chemical and mineralogical characterization, comminution testing, gravity test work and a comprehensive cyanidation study.
Highlights
- Gold extraction for gravity-leach averaged
94.9% (fresh rock) and95.3% (saprolite) - Primary grind size of P80 at 50 µm resulted in the best overall gold recovery (
95.0% ) - Comminution test results show medium hardness levels; in-line with other Guiana Shield gold deposits
- Negligible concentrations of deleterious elements, low acid consumption, and no significant preg-robbing
Colin Padget, Founders' President & CEO, commented, "These positive metallurgical results represent another major de-risking milestone for Antino. With
Gold Recovery Results Summary
Initial metallurgical testing was completed in British Columbia, Canada by Blue Coast Research Ltd. with direction from Founders and Fuse Advisors Inc. The study includes five drill core composite samples from the Froyo Gold Zone ("Froyo") and three tailings samples from historical artisanal mining areas (Figure 1). The study includes comminution test work, preliminary gravity gold recovery tests, and grind and cyanidation optimization work.
Comminution
Comminution testing was completed on all fresh rock composites to characterize sample hardness. Bond Ball Mill Work Index ("BMWI") tests on fresh rock samples have an average BWMI of 13.2 kWh/t. This is considered medium hardness and in-line with other gold deposits in the Guiana Shield. For example, the preliminary fresh rock test work reported for Newmont's Merian Mine averages 19.0 kWh/t1, suggesting potential for more favourable economics at Antino in terms of energy consumption on grind.
1 Newmont, Merian Operations NI 43-101 Technical Report, 2018
Gravity Gold Recovery
In this study, an Extended Gravity Recoverable Gold (E-GRG) test was completed on a single master sample representative of the Froyo Gold Zone ("Froyo Composite"). Additional smaller-scale gravity assessment tests were done on each of the various drill core and historical tailings composites to assess potential differences in their respective gravity test performance. Maximum gold recovery in the E-GRG testing was
Grind and Cyanidation Optimization
A total of 36 cyanidation tests were performed to evaluate the influence of primary grind size, reagent dosage, oxygen addition, and combined gravity/cyanidation test work, and the Froyo Composite was used for further testing and flowsheet optimization. The optimal grind and cyanidation conditions for gold recovery on the Froyo Composite are at a primary grind size of P80 at 50 µm and 0.50 g/L of sodium cyanide. Additionally, gold recoveries in excess of
Tailings Test Results
Metallurgical testing was also completed on three tailings samples from Upper Antino. These samples, taken from the Froyo, Ginger, and Donut targets (Figure 1), demonstrated an average gold recovery of
Future Test Work
Founders intends to complete the following additional test work:
- Mineralogy assessment of core and leach tailings samples
- Further cyanide destruction tests on leach tailings
- Additional comminution testing to assess potential deposit-scale variability
- Acid-base-accounting tests on core samples, leach tailings, and waste rock samples
Image A & B: Reflected light micrographs of typical Antino gold mineralization
Image A: Free gold in a quartz-carbonate matrix and infilling fractures in pyrite
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Image B: Abundant fracture fill gold in pyrite
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Figure 1: Upper Antino Tailings
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About Founders Metals
Founders Metals is a Canadian-based exploration company focused on advancing the Antino Gold Project located in Suriname, South America, in the heart of the Guiana Shield. Antino is 20,000 hectares and has produced over 500,000 ounces of gold from surface and alluvial mining to date2. The Company will complete 45,000 metres of drilling in 2024 and is fully financed for up to 60,000 metres in 2025.
2 2022 Technical Report - Antino Project; Suriname, South America. K. Raffle, BSc, P. Geo & Rock Lefrançois, BSc, P.Geo.
Qualified Persons
The technical content of this news release has been reviewed and approved by Travis O'Farrell, P.Eng., a qualified person as defined by National Instrument 43-101.
ON BEHALF OF THE BOARD OF DIRECTORS,
Per: "Colin Padget"
Colin Padget
President, Chief Executive Officer, and Director
Contact Information
Katie MacKenzie, Vice President, Corporate Development
Tel: 306 537 8903 | katiem@fdrmetals.com
Cautionary Statement Regarding Forward-Looking Information
This press release contains "forward-looking information" within the meaning of applicable Canadian securities legislation. Forward-looking information includes, without limitation, statements regarding the use of proceeds from the Company's recently completed financings and the future or prospects of the Company. Generally, forward-looking information can be identified by the use of forward-looking terminology such as "plans", "expects" or "does not expect ", "is expected ", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate", or "believes", or variations of such words and phrases or state that certain actions, events or results "may", "could", "would", "might" or "will be taken", "occur" or "be achieved". Forward-looking statements are necessarily based upon a number of assumptions that, while considered reasonable by management, are inherently subject to business, market, and economic risks, uncertainties, and contingencies that may cause actual results, performance, or achievements to be materially different from those expressed or implied by forward-looking statements. Although the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, other factors may cause results not to be as anticipated, estimated, or intended. There can be no assurance that such information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking information. Other factors which could materially affect such forward-looking information are described in the risk factors in the Company's most recent annual management discussion and analysis. The Company does not undertake to update any forward-looking information except in accordance with applicable securities laws.
All material information on Founders Metals can be found at www.sedarplus.ca.
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FAQ
What are the gold recovery rates from Founders Metals' (FDMIF) Antino Project metallurgical tests?
What is the optimal grind size for gold recovery at Founders Metals' (FDMIF) Antino Project?
What is the Bond Ball Mill Work Index (BMWI) for Founders Metals' (FDMIF) Antino Project?
