Infill Drilling Intersects Intervals Of Gold From Surface
Bluestone Resources Inc.(TSXV: BSR) (OTCQB: BBSRF) has promising reported assay results from its 2021 infill drill campaign that focused on the Salinas silica cap, a layer of near-surface, low-grade disseminated mineralisation some 100-150m thick that overlies the high-grade quartz-adularia vein swarms at the company’s Cerro Blanco Gold Project in Guatemala.
President and CEO, Jack Lundin, said this recent drilling was undertaken to support the upcoming feasibility study for a surface mining scenario.
Results include the following drilled intercepts:
- 140.2 meters grading 1.1 g/t Au and 8.2 g/t Ag;
- 57.6 meters grading 3.1 g/t Au and 9.9 g/t Ag;
- 150.1 meters grading 0.8 g/t Au and 5.4 g/t Ag;
- 189.3 meters grading 0.8 g/t Au and 2.5 g/t Ag; and
- 7.6 meters grading 30.2 g/t Au and 85.5 g/t Ag.
“The Salinas unit forms the top of the Cerro Blanco deposit and the recent pivot to surface mining now allows this upper layer to be mined and processed during the preliminary years of mine life. This supplementary drill programme was initiated and successfully completed on schedule and will contribute to a new resource estimation currently underway,” Mr Lundin said.
“The Salinas accounts for about one-fifth of the current resource, and these encouraging results will lead to the definition of additional ounces and improved detail in the mine plan.”
With previous drill campaigns focusing on the high-grade veins within the underlying Mita unit, the primary objective of the drill programme was to increase the density of drillholes within the Salinas unit, define extensions to the mineralisation, and potentially upgrade the current mineral resource to a higher classification.
The new estimate is expected to improve the current resource classification for the Cerro Blanco surface operation and will form the basis of the open pit reserves calculation as part of the feasibility study.
The Cerro Blanco Gold Project is an advanced stage near surface development project. A PEA on the project highlighted an asset capable of producing over 300 koz/yr with an average annual production of 231 koz/yr at all-in sustaining costs of ~$642/oz over an initial 11-year mine life.
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