Blackrock Announces Filing of Tonopah West Project Technical Report

In This Article:

Vancouver, British Columbia--(Newsfile Corp. - November 8, 2023) - Blackrock Silver Corp. (TSXV: BRC) (the "Company" or "Blackrock") is pleased to announce that it has filed on SEDAR+ an independent technical report and updated mineral resource estimate (the "Updated MRE") titled "Technical Report for Updated Estimate of Mineral Resources, Tonopah West Silver-Gold Project, Nye and Esmeralda Counties, Nevada, USA" effective October 6, 2023 and dated November 8, 2023 (the "Technical Report") for the Tonopah West silver-gold project. The Technical Report was prepared in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum Definition Standards for Mineral Resources and Mineral Reserves adopted May 19, 2014, and in accordance with National Instrument 43-101 - Standards of Disclosure for Mineral Projects and supports the disclosure made by the Company in its October 10, 2023 news release announcing the updated MRE. There are no material differences in the Technical Report from the information disclosed in the October 10, 2023 news release.

HIGHLIGHTS:

  • The Updated MRE contains a total of 0.57 million ounces ("Moz") of gold and 47.74Mozs of silver or 100.04Mozs of silver equivalent ("AgEq"), which is a 135% increase over the maiden resource estimate for Tonopah West (the "Maiden MRE") included in the technical report dated effective April 28, 2022;

  • At a 200 g/t AgEq cut-off, the average grade of the inferred mineral resource is 508.5 g/t AgEq, which is a 14% increase over the Maiden MRE;

  • The Updated MRE includes 6.12 million tonnes, which is a 106% increase over the Maiden MRE;

  • Blackrock's discovery costs are $0.29 per ounce of AgEq;

  • The Updated MRE is based on a structural re-interpretation of the Victor and DPB areas and incorporation of the new drill information from the Northwest Step Out target. The Updated MRE captures approximately 3-kilometres of strike along the Tonopah West vein system; and

  • Silver and gold mineralization remains open to the northwest and internally between Victor and DPB, and DPB and the Northwest Step Out target, and at depth.

Table 1: Tonopah West Updated 2023 Mineral Resource Estimate

AgEq cutoff
g/t
1

Tonnes

Silver g/t

Gold g/t

AgEq g/t2

Ounces of Silver

Ounces of Gold

Ounce of Silver Equivalent3

Classification4

200

6,119,000

242.6

2.90

508.5

47,738,000

570,000

100,038,000

Inferred

 

1 AgEq cutoff grade is based a total mining, processing and G&A cost of $119/tonne.
2 Silver Equivalent grade ratio used in this news is based on silver and gold prices of $22/ounce and $1,850/ounce, respectively, and recoveries for silver and gold of 87% and 95%, respectively. AgEq Factor= (Ag Price / Au Price) x (Ag Rec / Au Rec); g AgEq/t = g Ag/t + (g Au/t / AgEq Factor).
3 Rounding as required by reporting guidelines may result in apparent discrepancies between tonnes, grade, and contained metal content.
4 Mineral resources are not mineral reserves and do not have demonstrated economic viability. There is no certainty that all or any part of the mineral resources estimated will be converted into mineral reserves. The quantity and grade of reported inferred mineral resources in this estimation are uncertain in nature and there has been insufficient exploration to define these inferred mineral resources as indicated mineral resources. It is uncertain if further exploration will result in upgrading them to the Indicated mineral resources category.