Louied91
1 year ago
$TCVNF $TOC.CN Tocvan Diagnostic Leach Study Reports High Percentage of Recoverable Gold and Silver
https://www.accesswire.com/748318/Tocvan-Diagnostic-Leach-Study-Reports-High-Percentage-of-Recoverable-Gold-and-Silver
Highlights
Diagnostic Leach Study Reports High-Percentage of Recoverable Gold and Silver (Au: 95 to 99%; Ag: 73 to 97%)
Head Screen Assays Report High-Grade Gold and Silver (2.7 to 24.9 g/t Au and 8.8 to 74.2 g/t Ag)
Gravity Concentrate Assays for Gold and Silver range from 35.6 to 290.3 g/t Au and 53 to 1,152 g/t Ag
Majority of Gold and Silver can be Recovered with Gravity Concentration and Agitated Cyanide Leach
Drill core sample indicates same recovery potential at depth (150m down hole) as at surface.
Video Discussion Link:
CALGARY, AB / ACCESSWIRE / April 11, 2023 / Tocvan Ventures Corp. (the "Company") (CSE:TOC)(OTCQB:TCVNF)(FSE:TV3), is pleased to provide the results of a Precious Metal Diagnostic Leach Study from its Pilar Gold-Silver Project in Sonora, Mexico. Five composite samples were collected for the study; three Main Zone surface channel composites (samples 494741, 494743 and 494745); one 4-T surface channel composite (sample 494747); and one drill core coarse reject composite (sample 494749) from drill hole JES-22-62 at 150-meter downhole depth, 125-meters from surface (108.6m of 0.8 g/t Au, including 9.5m of 7.6 g/t Au). Table 1 summarizes the findings of the report and highlights the total recoverable amount of gold and silver possible by gravity concentration followed by agitated cyanide leach of the gravity tails. Precious metal characterization for each sample is summarized in Table 2, highlighted by a large percentage of free gold and silver with the remaining portion predominantly "exposed but attached", indicating a large percentage of the gold and silver can be recovered. The study was completed by independent and ISO certified, metallurgical lab LTM, a full report of the study is available on the Company's website.
"These results far surpass our expectations and provide us with new insight on the optimization of gold and silver recovery at Pilar" stated Brodie Sutherland, CEO. "To have such a large percentage of the gold and silver free and accessible for multiple recovery methods allows us to evaluate the most efficient ways to develop the project. This is a huge checkmark for the project and an excellent indicator to the industry that Pilar can be developed. We look forward to further evaluating the bulk sample data in the coming months."
Louied91
1 year ago
$TCVNF $TOC.C Tocvan Outlines High-Grade Gold Results for Start of Diagnostic Leach Study; Stockpile of Bulk Sample Complete
https://www.accesswire.com/746380/Tocvan-Outlines-High-Grade-Gold-Results-for-Start-of-Diagnostic-Leach-Study-Stockpile-of-Bulk-Sample-Complete
Highlights
Precious Metal Diagnostic Leach Head Grade Results Return High-Grade Gold
Bulk Sampling and Plant Conditioning Completed
Coarse Free Gold Identified in Screened Material
Gravity Recovery Circuit Added for Testing
Video Discussion Link: Tocvan Ventures - Bulk Sample Progress Update *Free Gold Identified* - YouTube
CALGARY, AB / ACCESSWIRE / March 29, 2023 / Tocvan Ventures Corp. (the "Company") (CSE:TOC)(OTCQB:TCVNF)(FSE:TV3), is pleased to provide a progress update on its first bulk sample at the Pilar Gold-Silver Project in Sonora, Mexico. Over 1,200 tonnes of material have been stockpiled, with first shipments of material completed. Crushing, screening circuit and laboratory setup is completed. Material crushing and screening has started. Foundation and drainage system for leach pad installation is ongoing. Separate to the Bulk Sample, head-grade results from the precious metal diagnostic leach tests have returned high-grade results with the five samples averaging 6.2 g/t Au, 7.6 g/t Au, 1.3 g/t Au, 11.1 g/t Au and 7.6 g/t Au respectively (see Table 1). Diagnostic leach tests are ongoing and were collected from four trench areas and one select drill core coarse reject sample. Preliminary results from the study suggest free gold is present in the samples and has been confirmed visually by testing sieved (<3/8") material. A gravity concentrator unit will be utilized to conduct formal testing for the presence and abundance of free gold in the finer grained fraction. At Pilar, trenching related to the bulk sample has unearthed several buried underground working entrances along quartz vein structures, another indicator of the robust mineralized system and a useful tool for mapping new high-grade structures.
"We are extremely pleased with the bulk sample progress so far and how quickly we are learning more about the robust mineralized system at Pilar," stated Brodie Sutherland, CEO. "All the material we need for the sample is now stockpiled. Through trenching and excavation for the sample we have unearthed historic workings that clearly were focused on higher-grade mineralization, this will provide us with key information to aid in future targeting. The new exposures are also giving us excellent structural data to enhance our modelling. We are also seeing free gold visible in the finer fraction of sample material which we will evaluate further. In addition, the first results highlighting the head-grade for samples collected for diagnostic leach have returned very encouraging results. We look forward to updating shareholders as we progress."
Louied91
1 year ago
$TCVNF Tocvan Provides Progress Report on Metallurgical Study and Bulk Sample. Extends Drill Permit at Pilar for Two Years
https://www.accesswire.com/743558/Tocvan-Provides-Progress-Report-on-Metallurgical-Study-and-Bulk-Sample-Extends-Drill-Permit-at-Pilar-for-Two-Years
Highlights
Samples Selected for Precious Metal Diagnostic Leach
Bulk Sampling and Metallurgical Plant Conditioning Ongoing
Local ISO Certified Lab, LTM selected for Analysis and Bulk Sample Quality Control
Permit Confirmed for an Additional Two-years of Drilling and Trenching at Pilar
CALGARY, AB / ACCESSWIRE / March 14, 2023 / Tocvan Ventures Corp. (the "Company") (CSE:TOC)(OTCQB:TCVNF)(FSE:TV3), is pleased to provide a progress update on its first bulk sample at the Pilar Gold-Silver Project in Sonora, Mexico. Material preparation and heap leach pad preparation are ongoing. Trenching and sample extraction at Pilar are ongoing. At the processing site, crusher and conveyor belt circuits have been brought online and are ready for testing. Ground conditioning is complete and ready for liner installation followed by gravel bed and drainage system setup. Laboratorio Technologico de Metalurgia (LTM) has been selected to oversee and quality check the progress of the bulk sample. LTM is an ISO Certified Lab based in Hermosillo with internationally trained and certified technical experts in metallurgical analysis. Concurrently with the bulk sample, a Precious Metal Diagnostic Leach study will be completed by LTM to assist in the understanding of gold characteristics and leach kinetics to optimize future process facilities. Five (5) - 10-kilogram samples collected from surface and drill core for the Precious Metal Diagnostic Leach study. Scope of work will include: 1) Head Grade Analysis; 2) Precious Metal Characterization (Results for each category to be provided: Free Gold; Exposed but Attached; Associated with Carbonates; Sulphide Associated; and Encapsulated in Siliceous Minerals).
In addition, the Company is also pleased to announce it has completed a renewed permit for Pilar. The permit is valid for two-years, allowing for nine trench areas and 83 drill pads at Pilar. The permit will provide access for planned infill and step-out drilling along the 1.2-kilometer trend that remains largely untested at Pilar.
"This is a very exciting time for us as we get ready for the first bulk sample of surface material from Pilar" stated Brodie Sutherland, CEO. "This will set the stage for moving Pilar towards development, showcasing the expected head grade and recovery blended across our key oxide zones. Having a local certified laboratory to assist in the metallurgical analysis and to quality check the results is just another added benefit of operating in a top mining jurisdiction. Gold characterization studies will guide us on improving recovery and understanding the mineralized system at Pilar. With the addition of being able to drill Pilar for another two-years, this completely opens the potential for defining more mineralization on a very prospective trend. We look forward on updating shareholders as the operation progresses."
About the Bulk Sample
Up to 1,000 tonnes of oxide-gold material will be extracted from select areas exposed at surface across the project area, focusing on the Main Zone and 4-T Trends where preliminary column leach studies have returned promising head-grade and recovery results. Bulk Sample material will be extracted and prepared for processing by heap-leach method at a private mining operation less than 25 kilometers to the west of Pilar. Information from the sample will aim to provide a more detailed account of expected head-grade and recovery percentage of gold along with providing key information to optimize future production facilities. The information provided from the sample will be used for planning in coordination for permitting of full-scale mine and process facilities on-site at Pilar.
Louied91
1 year ago
$TCVNF Tocvan Outlines Areas for Bulk Sample with Surface Channel Sampling Yielding High-Grade Gold Up to 8.3 g/t Au and 38 g/t Ag at Pilar Gold-Silver Project
https://www.thenewswire.com/press-releases/1k49Fb7lV-tocvan-outlines-areas-for-bulk-sample-with-surface-channel-sampling-yielding-high-grade-gold-up-to-83-g-t-au-and-38-g-t-ag-at-pilar-gold-silver-project.html
Calgary, AB - TheNewswire - February 23, 2023 - Tocvan Ventures Corp. (the “Company”) (CSE:TOC) (OTC:TCVNF) (FSE:TV3), is pleased to announce the results from surface channel sampling across areas being prepared for the excavation of material for a Bulk Sample at its Pilar Gold-Silver Project in Sonora, Mexico. Channel sampling was completed every 5-meters perpendicular to exposed mineralization and alteration at surface along the Main Zone and 4-T trends. Eight locations were sampled to test varying levels of exposed mineralization, all eight trench locations returned anomalous gold and silver values. At the Main Zone, trench TR-2023-01, seven samples over a 35-meter trend returned an average grade of 2.2 g/t Au and 14.2 g/t Ag, ranging from 8.3 g/t to 0.1 g/t Au (see Table 1 and Figure 1). Along trench TR-2023-02, five samples over a 20-meter trend returned an average grade of 2.8 g/t Au and 9.5 g/t Ag, ranging from 7.1 to 0.7 g/t Au. Trench TR-2023-07 consisted of five samples along a 25-meter trend which returned an average grade of 2.2 g/t Au and 30.5 g/t Ag, ranging from 7.3 g/t to 0.1 g/t Au. Along the Main Zone south trend anomalous values of gold and silver were returned at surface where mineralization is known to be more pronounced at depth confirmed by drill hole JES-22-62, which returned 108.6m of 0.8 g/t Au. In total, 37 channel samples were collected across the property; 22 samples returned values above 0.15 g/t Au, including 12 samples above 1.0 g/t Au (see Figure 1 and Table 1 for full results).
Highlights
Gold values averaging 1.4 g/t, reported up to 8.3 g/t Au
Silver values averaging 11 g/t, reported up to 65 g/t Ag
Results will guide Bulk Sampling to produce a representative blend of material from surface at Pilar
"The results from channel sampling at Pilar are extremely encouraging, exceeding our expectations and showcasing the potential for consistent high-grade gold with silver values for our bulk sampling” stated Brodie Sutherland, CEO. “As we get set for our first bulk sample at Pilar this provides us with confidence in extracting significant grade over the already exposed portions of the mineralization not only at our established Main Zone but also along the 4-T trend.”
Up to 1,000 tonnes of oxide-gold material will be extracted from select areas exposed at surface across the project area, focusing on the Main Zone and 4-T Trends where preliminary column leach studies have returned promising head-grade and recovery results. Bulk Sample material will be extracted and prepared for processing by heap-leach method at a private mining operation less than 25 kilometers to the west of Pilar. Information from the sample will aim to provide a more detailed account of expected head-grade and recovery percentage of gold along with providing key information to optimize future production facilities. In coordination with the Bulk Sample, additional metallurgical sampling will be completed to identify gold characteristics to further improve gold extraction techniques. The process will be managed by an independent qualified professional specializing in the metallurgy of oxide-gold deposits. Total duration of the processing and analysis of the bulk sample is expected to span three to four months depending on the rate of precious metals actively recovered through the heap-leach process. The information provided from the sample will be used for planning in coordination for permitting of full-scale mine and process facilities on-site at Pilar.
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