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Trilogy Metals Reports High Grade Drilling Results at the Bornite Project

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Trilogy Metals Reports High Grade Drilling Results at the Bornite Project

 

 

 

 

 

Trilogy Metals Inc. (TSX:TMQ) (NYSE American: TMQ) is pleased to announce the second and final set of assay results from this summer’s exploration diamond drilling program at the Bornite Project, which is part of the Company’s Upper Kobuk Mineral Projects located in the Ambler mining district of Northwest Alaska.  All amounts are in USD.  

 

The six Bornite drill holes reported below comprise approximately 4,596 meters from the 7,610-meter drill campaign which was completed in September. The results from the first four holes at Bornite were announced on September 10, 2019. Three of the six drill holes contain significant copper mineralization and were designed as infill holes to the 300 to 400-meter step-out holes completed in 2017 and 2018. Whereas, the other three holes are step out exploration holes. 

 

Drilling Highlights – Bornite Project

 

At a cutoff grade of 0.5% copper the most recent drill results from the Bornite Project are as follows:

 

  • RC19-0264 intersected 20 mineralized intervals including:
    • 78.9 metres averaging 2.35% copper;
    • 44.7 metres averaging 1.29% copper;
    • 48.1 metres averaging 1.13% copper; and
    • 15.5 metres averaging 3.24% copper.
  • RC19-0265 intersected 11 mineralized intervals including:
    • 16.3 metres averaging 2.93% copper;
    • 24.3 metres averaging 1.52% copper; and
    • 12. 4 metres averaging 1.95% copper.
  • RC19-260 intersected eight mineralized intervals including:
    • 8.1 metres averaging 1.75% copper.
  • The remaining three holes (RC19-0262, RC19-0263 and RC19-0266), which are exploration holes, did not encounter any significant mineralization.

 

At a higher cutoff grade of 1.5% copper, the most recent drill results from the Bornite Project are as follows:

 

  • RC19-0264 intersected 18 mineralized intervals including:
    • 22.8 metres averaging 2.86% copper;
    • 5.1 metres averaging 11.01% copper;
    • 7.2 metres averaging 5.98% copper;
    • 13.0 metres averaging 1.92% copper; and
    • 6.7 metres averaging 2.14% copper.
  • RC19-0265 intersected 10 mineralized intervals including:
    • 8.7 metres averaging 4.58% copper;
    • 12.4 metres averaging 2.01% copper; and
    • 8.9 metres averaging 2.38% copper.

 

James Gowans, Interim President and CEO of Trilogy Metals commented, “One of the factors that drew me to become involved with the Company is the fact that the Bornite Project is one of the highest-grade copper projects in the world. As an engineer, who had constructed high-quality mines throughout the world, the Bornite Project has many affinities to some of the world class assets that I have worked on, specifically the size and grade. I look forward to advancing this project, which nicely complements our other high-grade project at Arctic.”

 

The 2019 drilling budget of $9.2 million for Bornite was funded entirely by South32 Limited (ASX, LSE, JSE: S32; ADR: SOUHY), which funding represents the third and final payment under the Company’s option agreement with South32 and maintains the Option Agreement in good standing.

 

This year’s program at Bornite was comprised of 10 drill holes totaling approximately 7,610 metres through a combination of infill and expansion drill holes in and around the known resource. The first set of results from four drill holes was released on September 10, 2019 (https://trilogymetals.com/news/2019/trilogy-metals-reports-drilling-results-from-newly-discovered-zone-at-the-sunshine-prospect-and-drilling-results-at-the-bornite-project).

 

RC19-0262, RC19-0263 and RC19-0266 were all exploration holes designed to test targets identified by various geophysical methods away from the existing resource.  RC19-0262 was designed to test the far east side of the deposit following up on a district-wide Versatile Time Domain Electromagnetic anomaly identified during the spring 2019 VTEM/Z – Axis Tipper Electromagnetic survey; RC19-0263, on the far west side of the deposit was testing a gravity anomaly identified during the 2017 field program; and RC19-0266 was testing the south-end of the South Reef mineralization where copper mineralization (azurite, malachite) is observed at the surface of Iron Mountain.

 

On September 1, 2019, Trilogy Metals completed its summer exploration drilling program at Bornite and Sunshine and geotechnical activities at its Arctic Project. Additional drill results from the Arctic Project and the Sunshine prospect are anticipated to be released over the next few weeks as they become available.

 

Results for Bornite are presented in Table 1 at a cutoff grade of 0.5% copper to be comparable with previous drill results released by the Company.  All but hole RC19-0264 were drilled normal to stratigraphy and therefore the intercepts can be considered to be true widths. Hole RC19-0264 was drilled at a northeast azimuth to intersect a moderately southwest dipping mineralized carbonate vein set identified in previous oriented drill holes and is oblique to the main stratigraphically controlled mineralizationResults at a more selective higher-grade cutoff of 1.5% copper are also presented in Table 2 to show locally higher-grade intervals.  Table 3 shows drill hole locations.  Figure 1 shows the location of the drill holes on a plan map and Figure 2 shows a cross-section through drill hole RC19-0264 and Figure 3 shows a cross-section through drill hole RC19-0265.

 

Table 1 – 0.5% Cu cut-off with maximum 3 m internal waste – Minimum 1.5 m interval

 

 

Hole From (m) To (m) Length (m) Cu (%) Co (%)
RC19-0260 652.05 655.77 3.72 0.62 0.010
664.59 672.69 8.1 1.75 0.010
814.12 815.69 1.57 0.82 0.001
856.66 858.62 1.96 0.55 0.014
864.29 865.93 1.64 0.69 0.013
869.3 871.54 2.24 0.72 0.019
899.23 900.85 1.62 0.62 0.004
907.59 911.83 4.24 1.37 0.015
RC19-0262 No Significant Mineralization
RC19-0263 No Significant Mineralization
RC19-0264 228.98 231.35 2.37 0.75 0.001
383.4 391.68 8.28 0.73 0.020
394.92 410.83 15.91 0.53 0.015
420.02 468.13 48.11 1.13 0.020
471.88 516.61 44.73 1.29 0.015
522.41 530.35 7.94 0.81 0.011
533.4 543.71 10.31 0.89 0.008
549.16 595.1 45.94 0.81 0.008
600.04 603.5 3.46 0.54 0.029
610.88 629.61 18.73 0.59 0.008
640.25 643.81 3.56 0.70 0.010
648 653.64 5.64 0.46 0.013
660.04 676.3 16.26 0.93 0.010
680.95 694.18 13.23 1.06 0.016
718.73 797.66 78.93 2.35 0.017
801.32 816.82 15.5 3.24 0.028
827.4 835.37 7.97 0.73 0.007
841.56 845.82 4.26 0.63 0.015
864.41 865.93 1.52 0.76 0.009
923.54 927.21 3.67 0.73 0.012
RC19-0265 520.6 523.34 2.74 2.82 0.030
534.51 542.37 7.86 1.59 0.004
560.53 572.92 12.39 1.95 0.015
576.8 580.83 4.03 2.54 0.014
594.8 611.09 16.29 2.93 0.078
628.19 629.88 1.69 0.72 0.005
633.68 657.93 24.25 1.52 0.010
667.67 678.14 10.47 0.99 0.007
682.14 687.45 5.31 1.85 0.007
696.83 698.69 1.86 2.44 0.002
RC19-0266 No Significant Mineralization

 

 

Table 2 – 1.5% Cu cut-off with maximum 3 m internal waste – Minimum 1.5 m interval

 

 

Hole From (m) To (m) Length (m) Cu (%) Co (%)
RC19-0260 665.78 668.73 2.95 3.08 0.019
RC19-0262 No Significant Mineralization
RC19-0263 No Significant Mineralization
RC19-0264 436.79 449.76 12.97 1.92 0.036
475.29 477.29 2.00 1.75 0.018
480.43 485.87 5.44 1.97 0.008
488.9 495.58 6.68 2.14 0.007
528.61 530.35 1.74 1.55 0.009
537 538.83 1.83 1.66 0.007
559.76 561.82 2.06 2.22 0.010
661.77 663.58 1.81 1.59 0.014
685.95 687.63 1.68 1.83 0.018
722.58 727.99 5.41 2.44 0.021
731.52 733.45 1.93 2.23 0.008
740.7 745.24 4.54 2.29 0.015
752.86 775.68 22.82 2.86 0.032
781.87 786.99 5.12 11.01 0.006
RC19-0264 801.32 802.95 1.63 1.62 0.005
809.63 816.82 7.19 5.98 0.055
RC19-0265 520.6 522.27 1.67 3.71 0.041
536.06 537.07 1.01 9.06 0.004
564.03 572.92 8.89 2.38 0.018
578.51 580.83 2.32 3.61 0.021
598.6 607.32 8.72 4.58 0.139
635.51 637.49 1.98 2.51 0.020
645.57 657.93 12.36 2.01 0.013
671.82 673 1.18 2.68 0.001
684.03 687.45 3.42 2.41 0.005
696.83 698.69 1.86 2.44 0.002
RC19-0266 No Significant Mineralization

 

 

Table 3 – Bornite Drill Hole Locations

 

 

Hole East (m) North (m) Elevation (m) Azimuth Dip Length
RC19-0260 590464 7440760 319 206 -77 947
RC19-0262 591218 7439500 435 206 -77 915
RC19-0263 588910 7440860 211 206 -80 738
RC19-0264 589837 7440408 246 34 -65 960
RC19-0265 590631 7440377 292 206 -75 748
RC19-0266 589256 7438650 508 220 -70 288

 

 

Mineralization within the Bornite deposit occurs as a series of “Reefs” hosted by both the Upper and Lower Bornite Carbonate sequences separated by generally unmineralized phyllite units. The Cu-Co mineralization at Bornite occurs in three distinct carbonate zones, the Upper Reef, the Lower Reef and the South Reef.  All three zones were drill tested this year.

 

 

Mineralization is typically observed as breccia matrix replacement and is generally dominated by chalcopyrite and sometimes by bornite with chalcocite – particularly in the higher-grade zones.  Mineralization can also be observed as vein and replacement zones containing chalcopyrite and calcite/dolomite gangue.  These styles of mineralization were observed in all holes mentioned in this press release.

 

QA/QC Program Bornite

 

The drill program, sampling protocol, and data verification were managed by qualified persons employed by the Company. Diamond drill holes were typically collared at PQ (internal diameter of 85 millimeters) and reduced to HQ (internal diameter of 63.5 millimeters) during the drilling process. Samples were collected using a 0.2-metre minimum length, a 2.5-metre maximum length and a 1.9-metre average sample length. Drill core recovery averaged 93% for Bornite drill core. Three quality control samples (one blank, one certified standard and one duplicate) were inserted into each batch of 20 samples. The drill core was sawn, with half sent to ALS Minerals in Fairbanks for sample preparation and the sample pulps forwarded to ALS’s North Vancouver facility for analysis. ALS Minerals is an independent company certified as ISO 9001:2008 and accredited to ISO / IEC 17025:2005 from the Standards Council of Canada. The assay results for the primary and quality control samples were reviewed by an independent database manager and passed with good inferred quality.  The Company will submit 5% of the assay intervals from prospective lithologies to an independent check assay lab.

 

Qualified Persons

 

Andrew W. West, Certified Professional Geologist, Exploration Manager for Trilogy Metals Inc., is a Qualified Person as defined by National Instrument 43-101. Mr. West has reviewed the scientific and technical information in this news release and approves the disclosure contained herein.

 

About Trilogy Metals

 

Trilogy Metals Inc. is a metals exploration and development company focused on exploring and developing the Ambler mining district located in northwestern Alaska. It is one of the richest and most-prospective known copper-dominant districts located in one of the safest geopolitical jurisdictions in the world. It hosts world-class polymetallic volcanogenic massive sulphide deposits that contain copper, zinc, lead, gold and silver, and carbonate replacement deposits which have been found to host high-grade copper and cobalt mineralization. Exploration efforts have been focused on two deposits in the Ambler mining district – the Arctic VMS deposit and the Bornite carbonate replacement deposit. Both deposits are located within the Company’s land package that spans approximately 143,000 hectares. The Company has an agreement with NANA Regional Corporation, Inc., a Regional Alaska Native Corporation that provides a framework for the exploration and potential development of the Ambler mining district in cooperation with local communities. Our vision is to develop the Ambler mining district into a premier North American copper producer.

 

Posted October 28, 2019

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