Mr. Elmer Stewart reports
COPPER FOX ANNOUNCES INITIAL PHASE II ANALYTICAL RESULTS FROM VAN DYKE OXIDE COPPER DEPOSIT
Copper Fox Metals Inc. and its wholly owned subsidiary, Desert Fox Copper Inc., have provided the initial results (469 samples) from the phase II analytical program on the Van Dyke in-situ leach oxide copper deposit (see news release May 28, 2019).
Highlights
- DDH-OXY-17B returned an average of 0.297 per cent acid soluble copper (ASCu) over a 137.40-metre core interval including a 14.93 m interval grading 1.022 per cent ASCu.
- DDH OXY-29 returned an average of 0.362 per cent ASCu over a 144.48 m interval including a 25.64 m core interval grading 0.839 per cent ASCu.
- Seven of the eight drill holes reported in this news release returned significantly thicker mineralized intervals compared with the historical mineralized intervals.
- The ASCu/TCu (total copper) ratio for holes reported in this news release averaged 73.1 per cent compared with 60.7 per cent in the historical database.
Elmer B. Stewart, president and chief executive officer of Copper Fox, stated: "The phase II analytical program continues to return higher concentrations of acid soluble copper over significantly thicker mineralized intervals compared to the historical database. Updating of the geological model for the Van Dyke oxide copper deposit has significantly increased confidence in understanding the controls on the mineralization. Contingent on receipt of all analytical results from the phase II analytical program, Copper Fox will assess the possibility of completing an updated resource estimate for the project."
The weighted average acid soluble copper concentrations using a 0.05-per-cent ASCu cut-off for the drill holes reported in this news release are shown in the table. To compare the weighted average grades between the historical and 2019 analytical results, the analytical results from the historical database were weight averaged over the same interval corresponding to the 2019 interval.
2019 Historical 2019 Historical Acid soluble
DDH ID From (m) To (m) Int. (m) TCu (%) TCu (%) ASCu (%) ASCu (%) 2019/historical (%)
OXY-17B* 308.76 446.23 137.47 0.513 0.535 0.297 0.224 133
incl. 343.51 347.17 3.66 1.225 1.276 1.056 0.948 111
incl. 363.02 377.95 14.93 1.168 1.226 1.022 0.961 106
OXY-27* 522.12 657.45 135.33 0.331 0.351 0.284 0.25 114
incl. 544.98 556.56 11.58 0.777 0.858 0.713 0.75 95
VD-6 361.49 500.48 138.99 0.33 0.354 0.296 0.298 110
incl. 376.43 379.78 3.35 1.315 1.41 1.311 1.282 102
VD-9 547.12 576.99 29.87 0.334 0.335 0.154 0.037 416
VD-10 312.72 349.3 36.58 0.613 0.62 0.2 0.037 514
369.42 395.63 26.21 0.584 0.586 0.17 0.011 1,545
OXY-29 271.27 415.75 144.48 0.508 0.525 0.362 0.384 94
incl. 279.5 305.11 25.61 1.043 1.079 0.839 0.896 94
incl. 313.03 319.13 6.1 1.39 1.479 1.261 1.378 92
OXY-22 403.57 546.81 143.24 0.135 0.151 0.093 0.059 158
OXY-18 398.07 529.63 131.06 0.357 0.356 0.309 0.263 117
incl. 421.54 436.17 14.63 1.29 1.275 1.176 1.098 107
551.38 629.11 77.73 0.289 0.296 0.127 0.065 195
incl. 583.39 584.91 1.52 1.753 1.209 1.617 1.026 158
The mineralized intervals do not represent true widths.
* Partial results reported in 2014.The attached table compares the thickness of the 2019 mineralized intervals (based on 0.05-per-cent ASCu cut-off) with the reported historical mineralized intervals for the eight holes reported in this news release.
2019 results Historical results
DDH ID From (m) To (m) Int. (m) From (m) To (m) Int. (m) Thickness (m) 2019 minus historical (m)
OXY-17B* 308.76 446.23 137.47 336.19 396.85 60.66 76.81
OXY-27* 522.12 657.45 135.33 521.21 655.32 134.11 1.22
VD-6 361.49 500.48 138.99 361.49 459.64 98.15 21.33
480.97 500.48 19.51
VD-9 547.12 576.99 29.87 N/R N/R 0 29.87
VD-10 312.72 349.30 36.58 N/R N/R 0 36.58
369.42 395.63 26.21 N/R N/R 0 26.21
OXY-29* 271.27 415.75 144.48 268.22 366.67 98.45 46.03
OXY-22 403.57 546.81 143.24 408.74 491.03 82.29 60.95
OXY-18 398.07 529.13 131.06 408.74 442.57 33.83 42.06
469.09 524.26 55.17
551.38 629.11 77.73 574.55 588.26 13.71 64.02
The mineralized intervals do not represent true widths.
N/R: no analysis above 0.05 per cent ASCu.
* Partial results reported in 2014.The weighted average grades for the mineralized intervals were estimated using a 0.05-per-cent ASCu cut-off, in line with the cut-off grade used in the maiden resource estimate for the Van Dyke project completed in 2014. A maximum interval of three metres grading less than 0.05 per cent ASCu within the mineralized interval was tolerated when estimating the weighted average.
Analytical procedures
Sample preparation and analytical work were completed by Skyline Assayers & Laboratories located in Tucson, Ariz. Skyline's package codes CuT, CuSeq and CuCn were used to determine total copper, sequential copper and cyanide soluble copper. Sequential copper analysis uses a 0.25-gram sample digested (at room temperature) in 5 per cent sulphuric acid and the solution is then diluted to 100 millilitres with deionized water. The residue from the sample is digested in 10 per cent sodium cyanide solution and diluted to 100 ml. Atomic absorption spectrometry (AAS) was used to determine copper concentrations. Skyline has an ISO/IEC 17025/2005 accreditation.
Quality control
A total of 15 blanks and 28 certified reference standards were inserted (insertion rate 1:11) with the samples for which analyses are being reported. The Skyline results for the blank and standards were within plus and/or minus per cent of accepted value for the blank and standards.
Elmer B. Stewart, MSc, PGeol, president and CEO of Copper Fox, is the company's non-independent, nominated qualified person pursuant to National Instrument 43-101, Standards for Disclosure for Mineral Projects, and has reviewed and approves the scientific and technical information disclosed in this news release.
About Copper Fox Metals Inc.
Copper Fox is a Tier 1 Canadian resource company listed on the TSX Venture Exchange, focused on copper exploration and development in Canada and the United States. The principal assets of Copper Fox and its wholly owned Canadian and United States subsidiaries, being Northern Fox Copper Inc. and Desert Fox Copper Inc., are the 25-per-cent interest in the Schaft Creek joint venture with Teck Resources Ltd. on the Schaft Creek copper-gold-molybdenum-silver project located in northwestern British Columbia and a 100-per-cent ownership of the Van Dyke oxide copper project located in Miami, Ariz.
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