Northisle Copper and Gold Inc.’s (TSXV: NCX) latest assay results continue to affirm the interpretation that higher grade mineralisation exists in under-drilled areas of the modelled pit at Hushamu, on Vancouver Island, Canada
In addition, HU22-06 was continued in copper mineralisation for at least 200 meters beyond the outline of the modelled pit shell.
“Drilling at Hushamu during early 2022 continues to demonstrate the potential for improved grade and tonnage at Hushamu. In addition, we have demonstrated that historical visual interpretations of the alteration profile at Hushamu may have underestimated the overall size of the mineralised portion of the system,” Robin Tolbert, Vice President Exploration, said.
Hushamu 2022 Drill Results
Northisle has now received the assay results of the six drill holes from its 2022 Spring drill programme at Hushamu (HU22-01 to HU22-06), which has the objective of converting in-pit Inferred Mineral Resources to Indicated Mineral Resources ahead of the company’s planned pre-feasibility study.
The mineralisation remains open to the northwest and southeast of the deposit and based on results released today is interpreted to be open at depth significantly past previous modelling.
The significance of the additional 2022 Spring infill holes at Hushamu are:
- HU22-01 shows significant mineralisation extends from hole H-12-03 along the base of the proposed pit bottom. This may add tonnes and maintain the mineral grades over a longer distance than previously estimated.
- HU22-02 shows a thicker combined mineralised interval than holes EC-184 and H-12-09 on either side of it. An additional hole will be drilled in the gap between these two holes.
- HU22-03 and HU22-04 were infill holes drilled to the south of the main mineralised zone. Both intersected leached altered zones with a few narrow copper intercepts >0.01% Cu.
- HU22-05 was part of a two-hole program to fill in the gap between H-12-08 and H17-02 and test the extent below the planned pit bottom. This hole showed mineralisation extends to this point but not to depth. An in-fill hole between this hole and H17-02 is required to test to the south of an interpreted fault along Section 5613600E.
- HU22-06 indicates that mineralisation extends significantly beyond the modelled outline of the 2021 PEA pit shell on Section 581000 E:
- Historical drilling generally ends at the interpreted interface of CMG alteration and propylitic alteration.
- XRF scanning of drill core in real time indicated that core contained copper below the previously interpreted bottom of CMG alteration, so drilling was continued.
- Results suggest future drilling should continue to greater depth and may represent a significant extension of mineralisation.
- The spring drilling programme continues to demonstrate the potential to improve tonnage and grade in an updated Mineral Resource estimate at Hushamu through both upgrading of existing blocks as well as extension of the overall orebody.
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