Exploration during 2023 has demonstrated that the
Note on equivalent calculation: Copper equivalent is determined by calculating total contained metal value/ tonne, dividing by the copper price, and then dividing the resultant number of pounds of copper by 2204.6. Gold equivalent is determined by calculating total contained metal value/tonne, dividing by the gold price, and then multiplying the resultant number of troy ounces of gold by 31.103. Analyzed metal equivalent calculations are reported for illustrative purposes only. The metal chosen for reporting on an equivalent basis is the one that contributes the most dollar value after accounting for assumed recoveries, which is expected to be gold for Northwest Expo and copper for the overall North Island project.
GS23-04 and GS23-05 were targeted to intercept a large magnetic susceptibility anomaly (>0.012SI) located 1,200m southeast of the Red Dog Deposit and 1,300m west of historic drilling at the
Both holes intercepted highly anomalous copper mineralization and gold mineralization for their entire length. The significant intercepts highlighted above represent continuous intervals with >0.1% Cu. Both holes have silica-clay(pyrophyllite)-pyrite (SCP) alteration at the tops of the holes grading into quartz-sericite-pyrite alteration (QSP) throughout their length. This alteration pattern is interpreted to be located at the base of the lithocap transitioning into QSP alteration normally found adjacent to higher grade potassic cores of porphyry systems.
Subsequent to completion of the
Historic drill hole EC-120 was drilled vertically and foundered at 86m in SCP altered Bonanza Formation volcaniclastics. EC-130 was drilled at an azimuth of 360 degrees and a -60 degree dip for 163.4 metres and intersected propylitic and QSP alteration with very minor chalcopyrite-magnetite veinlets but no significant values.
Northisle has reviewed the assessment reports from previous programs at
Bowen, B. (1974). Geophysical, and Drilling Report on the Expo Groups
Bowen, B (1977). Drilling Report on the Expo Groups 2,4,5,6,7, Nanaimo Mining Division
Baker, D. (2005). Geological, Geochemical, Geophysical and Diamond Drilling Report on the Hushamu Property, Volumes A, B, C
Key Catalysts
The Company has a number of important catalysts over the next several months which it believes will continue to establish the
Q4 2023 to Q1 2024 - Phase 3 Drill results from
Q1 2024 - Drill results from
Q1 2024 -
Q1 2024 - Metallurgical testing results from
Ongoing - Continued progress on relationships with indigenous rightsholders and local stakeholders
Logging, Sampling and Assaying Procedures and QA/QC
The diamond drill core logging and sampling program was carried out under a rigorous quality assurance / quality control program using industry best practices. Drill intersections in this release are typically HQ to 100 m and NQ thereafter to the end of holes. After drilling, core was logged for geology, structure, and geotechnical characteristics utilizing Geospark core logging software, then marked for sampling and photographed on site. The cores for analyses were marked for sampling based on geological intervals with individual samples 3 m or less in length. Drill core was cut lengthwise in half with a core saw. Half-core was sent for assays reported in this news release. Prior to cutting core for assay bulk density was also determined on site by taking 15 to 20 cm lengths of whole core of each lithology at 10 m intervals. The ends of these were then cut at right angle to the core axis, retaining all pieces to be returned to the core box for later sample cutting and analysis. The diameter of each core sampled for bulk density was measured at each end with digital calipers to 3 decimal places and recorded. The length of the core was measured on four sides at 90 degrees to each other, to 2 decimal places and recorded. The software averaged the lengths and diameters. The mass of the dry core was measured twice on an Ohaus balance to 2 decimal places. If no discrepancy occurred the measurement was recorded. If there was a discrepancy the measuring was repeated until no discrepancy between 2 measurements occurred. The density was calculated using the formula Bulk Density = p times r-2 times h (where r is radius of core and h is length of core). Certified standard masses are used to calibrate the scale balance used for bulk density determinations. The balance in the core logging area was levelled on a large concrete block to avoid vibration, was leveled, and surrounded by a wooden partition to avoid wind affecting the balance. The measurements were recorded in Geospark logging software and Bulk Density calculated to 2 decimal places.
A total of 5% assay standards or blanks and 5% core duplicates are included in the sample stream as a quality control measure and are reviewed after analyses are received. Standards were obtained from WCM Minerals,
Pulps and rejects of holes with significant assay intervals are stored at Western Mineral Storage. The remaining split core is indexed and stored at Northisle logging and office facility in
About Northisle
Contact:
Tel: (778) 655-9582
Email: info@northisle.ca
This news release contains forward-looking statements. These forward-looking statements are based upon the reasonable beliefs of Northisle and its management as of the date of this news release; however, forward-looking statements involve risks and uncertainties and are based upon factors that may change and assumptions that may prove, with the passage of time, to be incorrect as a result of exploration and other risk factors associated with mineral exploration and development that are beyond the control of Northisle. Accordingly, undue reliance should not be placed upon such statements. If factors materially change or assumptions are materially incorrect, the actual results, performance or achievements of Northisle may be materially different from any future results, performances or achievements expressed or implied by such forward-looking statements. Northisle does not undertake any obligation to update or revise any forward-looking statements to reflect new information, future events or otherwise, except as required by applicable law.
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