Blackrock Silver Terminates Option and Exploration Agreement on the Tonopah North Project

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Vancouver, British Columbia--(Newsfile Corp. - May 15, 2024) - Blackrock Silver Corp. (TSXV: BRC) (the "Company" or "Blackrock") announces that its wholly-owned Nevada subsidiary, Blackrock Gold Corp. ("Blackrock Gold") has terminated the exploration and option to enter a joint venture agreement (the "Option Agreement") dated January 9, 2023 among Blackrock Gold, Tearlach Resources Limited ("Tearlach Resources") and Tearlach's wholly owned Nevada subsidiary, Pan Am Lithium (Nevada) Corp. ("PAL", and together with Tearlach Resources, "Tearlach").

Pursuant to the Option Agreement, Tearlach was granted the option to acquire, in two stages, up to a 70% interest in the lithium minerals in certain unpatented mining claims forming a portion of the Company's Tonopah North project ("Tonopah North" or the "Project") in Esmeralda County and Nye County, Nevada, upon incurring cumulative exploration expenditures of US$15,000,000 and the completion of a Feasibility study within 5 years.

Tearlach failed to make a US$100,000 cash payment due April 30, 2024 and following a 10-day cure period, Blackrock Gold elected to terminate the Option Agreement.

Over the last 18 months, Tearlach completed eleven core holes that expanded the Tonopah North lithium mineralization to an area of 3.0 kilometres by 3.5 kilometres and identified multiple lithium zones with significant thickness starting at the surface in the Siebert Formation. A majority of the drillholes intersected an upper claystone unit which averages 50.3 metres thick (165 feet) and a lower claystone horizon which averages 7.6 metres wide (25 feet). The depth of younger alluvial cover overlying the upper claystone horizon is approximately 10 metres thick and ranges between 3 to 20 metres (10 to 65 feet) thick. The upper and lower lithium zones are open in all directions. The geology and lithium mineralization appear similar to the immediately adjoining TLC lithium deposit owned by Lithium Americas.

Tearlach has spent over US$1-million in exploration drilling and assays on Tonopah North since January 2023, and has added significant value and geologic understanding to the Project. In addition, Tearlach staked 37 unpatented lode claims increasing the land position from 1,636 hectares (4,042 acres) to 1,862 hectares (4,600 acres). These claims cover additional untested Siebert Formation. The claims lie within the Tonopah North area of interest and belong to Blackrock.

The Company is compiling and evaluating the results of the exploration completed on Tonopah North by Tearlach and will decide the next steps for the Project.