Results show that the silver-gold mineralization at the project appears to be amenable to standard cyanidation processing with average recoveries of 95% gold and 87% silver.
HIGHLIGHTS
Twelve composites from 6 of the veins on the Tonopah West project returned an average gold recovery of 95% and an average silver recovery of 87%; Gold recoveries range between 90% to 98%, and the silver recoveries range between 81% and 94%; The Merten vein, the largest vein in the DPB resource area, returned an average gold recovery of 96% and a silver recovery of 90%; The high-grade
A total of twelve vein composites were assembled and delivered to Kappes and Cassidy (KCA) in
Blackrock project geologists constructed a set of low-grade and high-grade composites for each of the major veins in the DPB and Victors areas. The low-grade (LG) composite was assembled from coarse drill reject material based on gold and silver assays with a calculated silver equivalent (AgEq) grade of greater than 150 g/t AgEq, but less than 300 g/t AgEq. The high-grade (HG) composite was created of similar coarse reject material based on gold and silver assays with a calculated silver equivalent (AgEq) grade of greater than 300 g/t AgEq. The silver equivalent grade was calculated by using the silver assay added to the gold assay times 100.
All composites were leached for 96 hours on 45 micron material.
Based on these attractive initial results, the Company plans additional metallurgical testwork after its maiden resource estimate is completed.
Blackrock's exploration activities at the
About
Blackrock is a junior precious metals focused exploration company that is on a quest to make an economic discovery. Anchored by a seasoned Board, the Company is focused on its
Contact:
Tel: 604 817-6044
Email: andrew@blackrocksilver.com
Forward Looking Statements
This news release contains 'forward-looking statements' within the meaning of Canadian securities legislation. Such forward looking statements concern the Company's strategic plans, completion and exercise of the Tonopah option agreement, timing and expectations for the Company's exploration and drilling programs, estimates of mineralization from drilling, geological information projected from sampling results and the potential quantities and grades of the target zones. Such forward looking statements or information are based on a number of assumptions, which may prove to be incorrect. Assumptions have been made regarding, among other things: conditions in general economic and financial markets; accuracy of assay results; geological interpretations from drilling results, timing and amount of capital expenditures; performance of available laboratory and other related services; future operating costs and the historical basis for current estimates of potential quantities and grades of target zones. The actual results could differ materially from those anticipated in these forward looking statements as a result of the risk factors including the timing and content of work programs; results of exploration activities and development of mineral properties; the interpretation and uncertainties of drilling results and other geological data; receipt, maintenance and security of permits and mineral property titles; environmental and other regulatory risks; project costs overruns or unanticipated costs and expenses; availability of funds; failure to delineate potential quantities and grades of the target zones based on historical data, the impact of COVID 19 on operations and general market and industry conditions. Forward-looking statements are based on the expectations and opinions of the Company's management on the date the statements are made. The assumptions used in the preparation of such statements, although considered reasonable at the time of preparation, may prove to be imprecise and, as such, readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date the statements were made. The Company undertakes no obligation to update or revise any forward-looking statements included in this news release if these beliefs, estimates and opinions or other circumstances should change, except as otherwise required by applicable law.
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