North Bay Resources Announces MET Results of 97% Gold Recovery with Upgrade to 11.2 Ounces per Ton Concentrate, Fran Gold Project; Completes 120 Ton Winter Ore Shipment
North Bay Resources (NBRI) has announced significant metallurgical results from its Fran Gold Project in British Columbia, achieving 97% gold recovery through combined gravity (67%) and flotation (30%) processes. The head grade of 0.9 ounces per ton gold was upgraded to a total concentrate of 11.23 ounces per ton, representing a 12x concentration.
The company has completed a 120-ton winter ore shipment to its Bishop Gold Mill in California, packed in 82 super-sacks averaging 2,900 lbs each. Recent refinery results showed gold concentrations of 0.3 and 0.5 ounces per ton from two separate 2-ton samples. The company is upgrading its gravity separation equipment and optimizing its mill circuit.
The Fran Gold Project spans 34,360 acres and features a gold deposit extending 3,700 feet in length, with widths up to 120 feet and depths over 700 feet. The property has approximately 5,000 tons of surface material available for shipment.
North Bay Resources (NBRI) ha annunciato risultati metallurgici significativi dal suo Fran Gold Project nella Columbia Britannica, ottenendo un recupero dell'oro del 97% attraverso processi combinati di gravità (67%) e flottazione (30%). Il grado iniziale di 0,9 once d'oro per tonnellata è stato aggiornato a un concentrato totale di 11,23 once per tonnellata, rappresentando una concentrazione di 12 volte.
L'azienda ha completato una spedizione di minerale invernale di 120 tonnellate al suo impianto di lavorazione dell'oro a Bishop, in California, confezionato in 82 super sacchi con una media di 2.900 sterline ciascuno. I recenti risultati della raffineria hanno mostrato concentrazioni di oro di 0,3 e 0,5 once per tonnellata da due campioni separati di 2 tonnellate. L'azienda sta aggiornando le sue attrezzature di separazione per gravità e ottimizzando il circuito del suo mulino.
Il Fran Gold Project si estende su 34.360 acri e presenta un deposito d'oro lungo 3.700 piedi, con larghezze fino a 120 piedi e profondità oltre 700 piedi. La proprietà ha circa 5.000 tonnellate di materiale superficiale disponibile per la spedizione.
North Bay Resources (NBRI) ha anunciado resultados metalúrgicos significativos de su Fran Gold Project en Columbia Británica, logrando una recuperación de oro del 97% a través de procesos combinados de gravedad (67%) y flotación (30%). La ley inicial de 0.9 onzas de oro por tonelada se actualizó a un concentrado total de 11.23 onzas por tonelada, representando una concentración de 12 veces.
La empresa ha completado un envío de mineral invernal de 120 toneladas a su molino de oro en Bishop, California, empaquetado en 82 super bolsas con un promedio de 2,900 libras cada una. Los resultados recientes de la refinería mostraron concentraciones de oro de 0.3 y 0.5 onzas por tonelada de dos muestras separadas de 2 toneladas. La empresa está mejorando su equipo de separación por gravedad y optimizando el circuito de su molino.
El Fran Gold Project abarca 34,360 acres y presenta un depósito de oro que se extiende por 3,700 pies de longitud, con anchos de hasta 120 pies y profundidades de más de 700 pies. La propiedad tiene aproximadamente 5,000 toneladas de material superficial disponible para envío.
노스 베이 리소스(NBRI)는 브리티시 콜롬비아의 프랜 골드 프로젝트에서 중요한 금속 공학 결과를 발표하며, 중력(67%) 및 플로테이션(30%) 과정을 통해 97%의 금 회수율을 달성했다고 밝혔습니다. 초기 금 품위 0.9 온스/톤은 총 농축물 11.23 온스/톤으로 업그레이드되어 12배 농축을 나타냅니다.
회사는 캘리포니아의 비숍 금 제련소로 120톤의 겨울 광석 선적을 완료하였으며, 평균 2,900파운드의 82개의 슈퍼 샌드백에 포장되었습니다. 최근 제련소 결과는 두 개의 개별 2톤 샘플에서 각각 0.3 및 0.5 온스/톤의 금 농도를 보여주었습니다. 회사는 중력 분리 장비를 업그레이드하고 제련소 회로를 최적화하고 있습니다.
프랜 골드 프로젝트는 34,360 에이커에 걸쳐 있으며, 길이 3,700피트의 금 매장층과 120피트까지의 너비 및 700피트 이상의 깊이를 특징으로 합니다. 이 부지는 선적을 위해 약 5,000톤의 표면 물질을 보유하고 있습니다.
North Bay Resources (NBRI) a annoncé des résultats métallurgiques significatifs de son projet Fran Gold en Colombie-Britannique, atteignant un taux de récupération de l'or de 97% grâce à des procédés combinés de gravité (67 %) et de flottation (30 %). La richesse initiale de 0,9 once d'or par tonne a été revalorisée à un concentré total de 11,23 onces par tonne, représentant une concentration de 12 fois.
L'entreprise a complété un envoi hivernal de minerai de 120 tonnes à son usine de traitement de l'or à Bishop, en Californie, conditionné dans 82 super sacs pesant en moyenne 2 900 livres chacun. Les résultats récents de la raffinerie ont montré des concentrations d'or de 0,3 et 0,5 once par tonne à partir de deux échantillons séparés de 2 tonnes. L'entreprise améliore son équipement de séparation par gravité et optimise le circuit de son moulin.
Le projet Fran Gold s'étend sur 34 360 acres et présente un gisement d'or de 3 700 pieds de long, avec des largeurs allant jusqu'à 120 pieds et des profondeurs de plus de 700 pieds. La propriété dispose d'environ 5 000 tonnes de matériau de surface disponible pour l'expédition.
North Bay Resources (NBRI) hat bedeutende metallurgische Ergebnisse aus seinem Fran Gold Project in British Columbia bekannt gegeben, wobei eine Goldausbeute von 97% durch kombinierte Schwerkraft- (67 %) und Flotationsverfahren (30 %) erzielt wurde. Der ursprüngliche Gehalt von 0,9 Unzen Gold pro Tonne wurde auf ein Gesamtkonzentrat von 11,23 Unzen pro Tonne erhöht, was eine 12-fache Konzentration darstellt.
Das Unternehmen hat einen Winter-Mineralsendung von 120 Tonnen an seine Bishop Gold Mill in Kalifornien abgeschlossen, verpackt in 82 Supersäcken mit einem Durchschnitt von 2.900 Pfund pro Stück. Die aktuellen Raffinerieergebnisse zeigten Goldkonzentrationen von 0,3 und 0,5 Unzen pro Tonne aus zwei separaten 2-Tonnen-Proben. Das Unternehmen aktualisiert seine Schwerkrafttrennungsanlagen und optimiert den Mühlenkreislauf.
Das Fran Gold Project erstreckt sich über 34.360 Acres und weist ein Goldvorkommen von 3.700 Fuß Länge auf, mit Breiten von bis zu 120 Fuß und Tiefen von über 700 Fuß. Das Grundstück verfügt über etwa 5.000 Tonnen Oberflächenmaterial, die für den Versand verfügbar sind.
- 97% gold recovery achieved through combined gravity and flotation processes
- Successful 12x concentration upgrade from 0.9 to 11.23 ounces per ton gold
- Completed 120-ton ore shipment to processing facility
- Large gold deposit identified with grades up to 2.6 oz/ton gold
- 5,000 tons of surface material available for immediate shipment
- Recent refinery results (0.3-0.5 oz/ton) show lower grades than previous assays (1.2-2.3 oz/ton)
- Current mill circuit showing dilution issues at Deister Table
BISHOP, Calif., Dec. 16, 2024 (GLOBE NEWSWIRE) -- North Bay Resources Inc. (the “Company” or “North Bay”) (OTC: NBRI) is pleased to announce results of metallurgical studies from its Fran Gold Project, British Columbia. Recovery, totaling
Multi-element analyses were conducted at Woods Process Services using a CEM Mars 6 microwave digestion system and an Agilent ICP-OES 5800. The samples were digested using a three-acid method in the microwave digestion system, which applies precise microwave energy to rapidly and evenly heat the acid mixture, ensuring complete dissolution of the sample matrix. The resulting solution was analyzed using the Agilent ICP-OES 5800, which works by introducing the solution into a high-temperature plasma. The plasma excites the atoms and ions of the elements, causing them to emit light at characteristic wavelengths. These emissions are measured by an optical emission spectrometer, enabling accurate quantification of barium, calcium, cadmium, cobalt, chromium, copper, iron, potassium, lithium, magnesium, manganese, sodium, nickel, lead, strontium, and zinc.
The grind study was conducted on 1,000 gram portions to determine the time required to mill the material to a target grind size of
Gravity separation was performed on the two milled samples using the Knelson concentrator. The heavy material, known as concentrates or cons, is collected in the cone using centrifugal force and the gangue material, (tails), is washed away with water sprays. The cons and the tails are dried and prepped for fire assay. The cons are fired to extinction and a split of the tails are sent for single fire assay. The tails sample was also analyzed on the ICP-OES for multi-element scan and on the LECO for sulfur speciation.
Two flotation tests were conducted on the gravity tails. The milled and gravity scalped material was conditioned for 5 minutes with PAX and Aero 3477 for 5 minutes. MIBC was then added as a frother and the concentrate was collected for 5 minutes. Another dose of PAX and Aero 3477 was added and condition for 5 minutes. MIBC frother was added and the concentrates was collected for another 5 minutes. This sequence was performed 4 separate times. The individual concentrates were kept separate, dried, and sent to be fire assayed to extinction for gold and silver.
The tails portions were dried and a sample split to be sent to fire assay, ICP multi-element scan, and sulfur speciation.
Table 1.1 Fire Assay Head Analyses – Gold and Silver | |||||||
| Sample ID | Sample Weight (g) | Au mg | Ag mg | Au oz/t | Ag oz/t | Au g/mt | Ag g/mt |
| 3624-27 A | 15.00 | 0.470 | 0.600 | 0.914 | 1.167 | 31.3337 | 40.000 |
| 3624-27 A | 15.00 | 0.466 | 0.594 | 0.906 | 1.155 | 31.0670 | 39.600 |
| 3624-27 A | 15.00 | 0.463 | 0.627 | 0.900 | 1.219 | 30.8670 | 41.800 |
| Average | 0.907 | 1.180 | 31.089 | 40.467 | |||
Table 1.4 Fire Assay Gravity Cons and Tail Analyses – Gold and Silver | |||||||
| Sample ID | Sample Weight (g) | Au (mg) | Ag (mg) | Au g/mt | Ag g/mt | Au oz/t | Ag oz/t |
| Gravity Cons 1 | 89.59 | 26.25 | 21.13 | 292.979 | 235.830 | 8.545 | 6.878 |
| Gravity Tails 1 | 15.00 | 0.23 | 0.89 | 15.467 | 59.133 | 0.451 | 1.725 |
| Gravity Cons 2 | 97.17 | 21.42 | 23.69 | 220.397 | 243.779 | 6.428 | 7.110 |
| Gravity Tails 2 | 15.00 | 0.22 | 0.91 | 14.667 | 60.400 | 0.428 | 1.762 |
Table 1.5 Fire Assay Flotation Cons and Tails Analyses – Gold and Silver | |||||||
| Sample ID | Sample Weight (g) | Au (mg) | Ag (mg) | Au g/mt | Ag g/mt | Au oz/t | Ag oz/t |
| Flotation Cons Pull 1 (F-1) | 106.37 | 8.42 | 79.13 | 79.129 | 743.908 | 2.308 | 21.697 |
| Flotation Cons Pull 2 (F-1) | 73.76 | 1.87 | 25.31 | 25.313 | 343.193 | 0.738 | 10.010 |
| Flotation Cons Pull 3 (F-1) | 39.87 | 0.55 | 13.74 | 13.745 | 344.737 | 0.401 | 10.055 |
| Flotation Cons Pull 4 (F-1) | 40.87 | 0.36 | 8.76 | 8.759 | 214.325 | 0.255 | 6.251 |
| Flotation Tails (F-1) | 15.00 | 0.06 | 0.37 | 4.133 | 24.800 | 0.121 | 0.723 |
| Flotation Cons Pull 1 (F-2) | 99.53 | 7.75 | 77.82 | 77.816 | 781.832 | 2.270 | 22.803 |
| Flotation Cons Pull 2 (F-2) | 48.43 | 1.36 | 28.06 | 28.061 | 579.416 | 0.818 | 16.900 |
| Flotation Cons Pull 3 (F-2) | 36.72 | 0.37 | 10.02 | 10.022 | 272.924 | 0.292 | 7.960 |
| Flotation Cons Pull 4 (F-2) | 32.69 | 0.22 | 6.67 | 6.669 | 203.998 | 0.195 | 5.950 |
| Flotation Tails (F-2) | 15.00 | 0.03 | 0.05 | 2.000 | 3.333 | 0.058 | 0.097 |
Fran Gold Winter Shipment
Loading and transport of a 120 ton shipment to the Company’s Bishop Gold Mill, California has been completed. Eighty-two super-sacks with an average weight of 2,900 lbs. have been transported to the railroad and the first load is expected to arrive today. The 240,000 lbs. shipment utilized fewer super-sacks than expected indicating potential for high metal content as the gold is generally associated with up to
Picture 1. Packed Super Sacks at Fran Gold Project
Gravity Primary Equipment Upgrade and Refinery Results
As a result of the recent MET study, additional gravity separation equipment has been acquired including Knudson Bowl centrifugal concentrator and Gemini Table. The equipment will be placed in a gravity primary position immediately following the raker/classifier. Equipment is expected to be installed this week. The Company has identified a Knelson Concentrator 16 tons per hour for acquisition and is currently in negotiations.
Recent samples to the Company’s refinery partner have produced results from the first 2 tons of material at 0.3 ounces per ton gold and the second 2 tons at 0.5 ounces per ton. While a significant increase in concentration has been achieved, the results indicate dilution at the Deister Table due to high concentration of quartz and overflow, as well as a lack of flotation. The mill circuit is flotation primary with gravity meant for scavenger recovery; flotation reagents are expected to arrive this week. The Deister Table is now being further optimized by the Company’s Process Engineers. Primary optimization is the tilt of the table to prevent overflow and the slowing of the flow of slurry to increase concentration and recovery of gold only.
Fran Gold Project
The Property is 34,360 acres and is located 20 miles from Centerra Gold’s 60,000 tonne per day Mt. Milligan Copper, Gold Mine (299Mt @
On behalf of the Board of Directors of
NORTH BAY RESOURCES INC.
Jared Lazerson
CEO
info@northbay-resources.com
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This news release may contain certain “Forward-Looking Statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995 and applicable Canadian securities laws.
A photo accompanying this announcement is available at https://www.globenewswire.com/NewsRoom/AttachmentNg/5a62dc36-6834-4ad1-b668-e8ccd7e36266
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