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Arizona Sonoran Intersects 621 ft of 2.0% Total Copper at Parks/Salyer Infill Drilling within 872.5 ft of 1.64% CuT of Continuous Mineralization

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Arizona Sonoran Intersects 621 ft of 2.0% Total Copper at Parks/Salyer Infill Drilling within 872.5 ft of 1.64% CuT of Continuous Mineralization

 

 

 

 

 

Arizona Sonoran Copper Company Inc. (TSX:ASCU) (OTCQX:ASCUF)  announces 60% completion of its 105,000 ft (32,000 m) infill to indicated drilling program at Parks/Salyer, located ~1.3 mi (2 km) southwest of the Company’s Cactus Mine Project (see FIGURES 1-10). A total of 27 holes have now been drilled out of an anticipated 46 holes, with assays received to date for 15 holes, including the five reported in this release.

 

The program continues to support the tenor of mineralization while reducing drill spacing from 500 ft (150 m) to 250 ft (76 m) centres, suitable to upgrade the resource from the inferred category to the indicated category. Drilling has been staged to infill areas closest to the inferred high-grade core initially, before expanding out towards the west.

 

Highlights:

  • ECP-108 grade thickness surpasses the prior best intercept on the property
    • ECP-108: 872.5 ft (265.9 m) @ 1.64% CuT of continuous mineralization, including:
      • 621.0 ft (189.3 m) @ 2.00% CuT, 1.58% Cu TSol, 0.013% Mo (enriched)
      • Incl. 108.0 ft (32.9 m) @ 2.58% CuT, 2.45% Cu TSol, 0.009% Mo
      • 251.5 ft (76.7 m) @ 0.73% CuT, 0.019% Mo (primary)
  • ECP-107: 1,188.9 ft (362.4 m) @ 0.68% CuT of continuous mineralization, including:
    • 489.5 ft (149.2 m) @ 1.19% CuT, 1.13% Cu TSol, 0.013% Mo (enriched)
    • Incl. 139.3 ft (42.5 m) @ 2.42% CuT, 2.39% Cu TSol, 0.010% Mo
    • 699.4 ft (213.2 m) @ 0.33% CuT, 0.012% Mo (primary)
  • ECP-110: 762.2 ft (232.3 m) @ 0.90% CuT of continuous mineralization, including:
    • 419.0 ft (127.7 m) @ 1.15% CuT, 1.01% Cu TSol, 0.005% Mo (enriched)
    • 343.2 ft (104.6 m) @ 0.58 % CuT, 0.011% Mo (primary)
  • ECP-111: 443.0 ft (135.0 m) @ 0.78% CuT, 0.71% Cu TSol, 0.035% Mo (enriched)

NOTE: True widths are not known

 

George Ogilvie, Arizona Sonoran President and CEO commented, “This drilling continues to demonstrate the consistency of copper grade and thickness, in both the leachable and primary sulphide mineralization and within the high-grade core of the Parks/Salyer deposit. Two drills will finish the remaining 40% of the drill program this quarter, while a third drill rig will move to the NE Extension to conduct exploration holes. This infill drilling will allow us to upgrade the Parks/Salyer resource from its current inferred category to an indicated category, that can then be fed into our re-scoped PFS in late 2023, early 2024.”

 

Exploration Drilling Program Recap

 

The current 105,000 ft (32,000 m) drilling program is reducing drill spacings to 250 ft, aimed at upgrading the mineral resource category to indicated in support of the potential definition of maiden reserves in the upcoming PFS. To date the drilling of 27 infill core holes (59,289 ft | 18,071 m) has defined a high-grade zone within the eastern half of the deposit, which is currently being pursued westward with the remainder of the drilling, as demonstrated by the grade/thickness map of completed drilling.

 

Chalcocite and covellite are the dominant copper species in the enriched mineralization, replacing primary pyrite and chalcopyrite in their original depositional habits, such as veins, breccia fillings, voids and disseminations. These replacements styles, shown in FIGURES 1-10are representative of our enriched mineral zone. Chalcocite also tends to build on itself, resulting in zones of higher-grade mineralization where the enrichment fluids had time and opportunity to continue the secondary enrichment process.

 

TABLE 1: Parks/Salyer Drilling Highlights

 

Hole Id Zone Feet Metres CuT

%

TSol

%

Mo

%

From To Length From To Length
ECP-107 enriched 835.6 849.3 13.7 254.7 258.9 4.2 1.02 1.01 0.019
enriched 992.0 1481.5 489.5 302.4 451.6 149.2 1.19 1.13 0.013
including 992.0 1131.3 139.3 302.4 344.8 42.5 2.42 2.39 0.010
and 1161.5 1207.0 45.5 354.0 367.9 13.9 1.39 1.35 0.016
primary 1481.5 2180.9 699.4 451.6 664.7 213.2 0.33 0.03 0.012
including 1730.0 1780.0 50.0 527.3 542.5 15.2 0.50 0.04 0.018
and 1808.9 1846.3 37.4 551.4 562.8 11.4 0.50 0.02 0.026
and 1951.0 1969.4 18.4 594.7 600.3 5.6 0.63 0.03 0.015
and 2050.0 2112.1 62.1 624.8 643.8 18.9 0.79 0.05 0.024
and 2148.8 2173.0 24.2 655.0 662.3 7.4 0.59 0.04 0.014
ECP-108 enriched 1085.0 1706.0 621.0 330.7 520.0 189.3 2.00 1.58 0.013
including 1097.0 1205.0 108.0 334.4 367.3 32.9 2.58 2.43 0.009
and 1305.0 1415.0 110.0 397.8 431.3 33.5 2.47 2.01 0.011
and 1445.0 1475.0 30.0 440.4 449.6 9.1 2.82 2.38 0.010
primary 1706.0 1957.5 251.5 520.0 596.6 76.7 0.73 0.11 0.019
including 1716.0 1759.0 43.0 523.0 536.1 13.1 0.91 0.12 0.013
ECP-109 oxide 718.0 776.3 58.3 218.8 236.6 17.8 0.39 0.37 0.007
oxide 826.7 990.6 163.9 252.0 301.9 50.0 0.37 0.32 0.007
including 826.7 862.0 35.3 252.0 262.7 10.8 0.61 0.56 0.013
and 952.0 990.6 38.6 290.2 301.9 11.8 0.54 0.50 0.003
enriched 1011.5 1027.0 15.5 308.3 313.0 4.7 0.96 0.90 0.008
enriched 1111.5 1357.0 245.5 338.8 413.6 74.8 0.86 0.84 0.021
including 1111.5 1131.0 19.5 338.8 344.7 5.9 1.67 1.58 0.014
and 1191.0 1257.2 66.2 363.0 383.2 20.2 1.18 1.15 0.018
primary 1357.0 2160.0 803.0 413.6 658.4 244.8 0.39 0.07 0.015
including 1446.0 1527.5 81.5 440.7 465.6 24.8 0.55 0.19 0.025
and 1636.0 1669.0 33.0 498.7 508.7 10.1 0.55 0.22 0.030
ECP-110 enriched 1113.0 1532.0 419.0 339.2 467.0 127.7 1.15 1.01 0.005
including 1115.6 1215.0 99.4 340.0 370.3 30.3 1.95 1.90 0.003
and 1430.0 1450.0 20.0 435.9 442.0 6.1 1.64 1.42 0.008
primary 1532.0 1875.2 343.2 467.0 571.6 104.6 0.58 0.07 0.011  
including 1572.0 1602.0 30.0 479.1 488.3 9.1 0.99 0.09 0.027
and 1652.0 1682.0 30.0 503.5 512.7 9.1 0.82 0.17 0.018
ECP-111 oxide 1026.3 1267.0 240.7 312.8 386.2 73.4 0.49 0.43 0.024
including 1036.0 1066.0 30.0 315.8 324.9 9.1 0.90 0.56 0.019
and 1109.0 1111.7 2.7 338.0 338.8 0.8 7.31 6.49 0.041
and 1237.0 1267.0 30.0 377.0 386.2 9.1 0.75 0.71 0.018
enriched 1287.0 1730.0 443.0 392.3 527.3 135.0 0.78 0.71 0.035
including 1347.0 1434.0 87.0 410.6 437.1 26.5 1.46 1.45 0.056
and 1472.7 1527.0 54.3 448.9 465.4 16.6 1.18 1.13 0.035
primary 1730.0 2136.0 406.0 527.3 651.1 123.7 0.25 0.03 0.009
including 2034.7 2062.0 27.3 620.2 628.5 8.3 0.47 0.05 0.010
  1. Intervals are presented in core length and are drilled with very near vertical dip angles.
  2. Drill assays assume a mineralized cut-off grade of 0.5% CuT reflecting the potential for heap leaching of underground material in the case of Oxide and Enriched or in the case of Primary material to provide typical average grades. Holes were terminated below the basement fault.
  3. Some intercepts in the western exploration holes assumed a mineralized cut-off grade of 0.1% CuT to provide typical average grades of the tenor of mineralization.
  4. Assay results are not capped. Intercepts are aggregated within geological confines of major mineral zones.
  5. True widths are not known.

 

Table 2: Drilling details

 

Hole Easting (m) Northing (m) Elevation (ft) TD (ft) Azimuth Dip
ECP-107 421686.5 3644929.8 1371.1 2207.0 0.0 -90.0
ECP-108 421995.0 3644939.2 1375.6 1957.5 0.0 -90.0
ECP-109 421694.7 3645013.2 1373.4 2233.0 0.0 -90.0
ECP-110 422063.0 3644900.5 1375.2 1910.5 0.0 -90.0
ECP-111 421693.6 3645191.4 1378.5 2335.5 0.0 -90.0

 

 

Quality Assurance / Quality Control

 

Drilling completed on the project between 2020 and 2022 was supervised by on-site ASCU personnel who prepared core samples for assay and implemented a full QA/QC program using blanks, standards, and duplicates to monitor analytical accuracy and precision. The samples were sealed on site and shipped to Skyline Laboratories in Tucson AZ for analysis. Skyline’s quality control system complies with global certifications for Quality ISO9001:2008.

 

Technical aspects of this news release have been reviewed and verified by Allan Schappert – CPG #11758, who is a qualified person as defined by National Instrument 43-101– Standards of Disclosure for Mineral Projects.

 

Links from the Press Release


Figures 1-10: 
https://arizonasonoran.com/projects/exploration/maps-and-figures/

 

About Arizona Sonoran Copper Company

 

ASCU’s objective is to become a mid-tier copper producer with low operating costs and to develop the Cactus and Parks/Salyer Projects that could generate robust returns for investors and provide a long term sustainable and responsible operation for the community and all stakeholders. The Company’s principal asset is a 100% interest in the Cactus Project (former ASARCO, Sacaton mine) which is situated on private land in an infrastructure-rich area of Arizona. Contiguous to the Cactus Project is the Company’s 100%-owned Parks/Salyer deposit that could allow for a phased expansion of the Cactus Mine once it becomes a producing asset. The Company is led by an executive management team and Board which have a long-standing track record of successful project delivery in North America complemented by global capital markets expertise.

 

Posted January 17, 2023

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