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Arizona Sonoran Copper Company Inc
Symbol ASCU
Shares Issued 69,766,408
Close 2021-11-16 C$ 2.18
Recent Sedar Documents

Arizona Sonoran drills 108.2 m of 0.272% Cu at Cactus

2021-11-17 06:44 ET - News Release

Mr. George Ogilvie reports

ARIZONA SONORAN DRILLING EXTENDS MINERALIZATION WEST OF THE MODELLED CACTUS OPEN PIT

Arizona Sonoran Copper Company Inc. has released the first set of drilling results from its eight initial diamond drill holes for over 2,938 metres (9,639 feet) along the western periphery of the Cactus West pit. The drilling demonstrates continuous leachable mineralization including extensions outward from the modelled pit shell by at least 61 metres (200 feet). Mineralization from the infill drilling remains open to the west.

The 2021 mineral resource conversion drill program was designed to upgrade the current mineral resources at the Cactus West open pit and Cactus East underground, from inferred to indicated and from indicated to measured resources in advance of current continuing technical studies. Additionally, the program informs mineral resource growth zones for the 2022 expansion drilling program set to begin shortly. A full set of drill highlights may be found in the associated table.

Drilling highlights (please see the associated table for a full set of drilling results):

  1. Leachable material identified extending 61 m (200 ft) west from the modelled open pit;
  2. ECW-029: 0.774 per cent Cu TSol (total soluble copper) over 34 m (113 ft) of enriched mineralization;
  3. ECW-025: 0.272 per cent Cu TSol over 108 m (355 ft) of oxide mineralization;
  4. ECW-022: 0.519 per cent Cu TSol over 40 m (130 ft) of enriched mineralization;
  5. ECW-023: 0.695 per cent Cu TSol over 15.3 m (50.3 ft) of enriched mineralization.

George Ogilvie, Arizona Sonoran president and chief executive officer, stated: "These drilling results are the first of many exciting developments at the Cactus project. The drill program is designed to target some materials previously viewed as waste by Asarco, who at that time were processing sulphide-only material through a flotation mill. With ASCU targeting the leachable materials, which sit atop the sulphide mineralization for a heap leach operation, the infill to indicated and measured drilling program may positively affect the starter resource base and ultimately the economics of the pit."

He continued: "The first priority at Cactus is mineral resource conversion as we gear up for the upcoming prefeasibility study in 2022 with maiden reserves. Shortly, however, we will look to Park/Salyer for pure exploration drilling in conjunction with Cactus drilling."

Geological description

The Cactus West orebody extends southwesterly at depth under the western highwall of the pit and beneath the bounding West fault. Oxide and upper enriched ore zones were intersected to the west of the pit wall in 2020 stepout drilling and were further targeted by the current infill program. This portion of the drilling traces the northeast-southwest trend of the high-grade centre of the historic Sacaton West orebody. Results from this portion of the current drilling reinforce the positive results from the previous stepout drilling in this area. Core drilling continues northward up the western edge of the pit to complete this successful phase of infill drilling. Condemnation hole, ECW-027, was drilled as a sterilization hole to define the ultimate edge of the western pit for infrastructure planning purposes, located 305 m (1,000 ft) west of the open pit.

                                          DRILLING HIGHLIGHTS
                                          
Hole           From        To       Length          From            To       Length       TCu      TSol
                (m)       (m)          (m)          (ft)          (ft)         (ft)       (%)       (%)

ECW-022       163.7     166.1          2.4         537.0         545.0          8.0     0.246     0.205
              188.1     191.1          3.0         617.0         627.0         10.0     0.333     0.314
              199.6     203.0          3.4         655.0         666.0         11.0     0.159     0.110
              206.0     226.2         20.1         676.0         742.0         66.0     0.314     0.283
              232.3     238.4          6.1         762.0         782.0         20.0     0.319     0.318
              247.5     250.5          3.0         812.0         822.0         10.0     0.524     0.510
              281.0     284.1          3.0         922.0         932.0         10.0     0.623     0.586
              296.3     299.3          3.0         972.0         982.0         10.0     0.192     0.173
              317.6     357.2         39.6       1,042.0       1,172.0        130.0     0.552     0.519
              357.2     397.6         40.4       1,172.0       1,304.6        132.6     0.199     0.020
ECW-023       156.3     158.2          1.9         512.7         519.0          6.3     0.270     0.203
              164.3     170.4          6.1         539.1         559.0         19.9     0.115     0.044
              172.5     175.6          3.1         565.9         576.0         10.1     0.175     0.157
              194.7     210.0         15.3         638.7         689.0         50.3     0.750     0.695
              236.5     239.6          3.0         776.0         786.0         10.0     0.284     0.261
              263.9     294.4         30.6         865.7         966.0        100.3     0.397     0.356
incl.         270.1     282.2         12.2         886.0         926.0         40.0     0.524     0.489
              294.4     305.3         10.8         966.0       1,001.5         35.5     0.461     0.377
              305.3     425.5        120.2       1,001.5       1,396.0        394.5     0.385     0.032
incl.         361.5     395.3         33.8       1,186.0       1,297.0        111.0     0.580     0.038
ECW-024       149.8     206.3         56.5         491.6         677.0        185.4     0.247     0.195
              206.3     218.5         12.2         677.0         717.0         40.0     0.668     0.607
              227.7     230.7          3.0         747.0         757.0         10.0     1.275     1.178
              236.8     252.1         15.2         777.0         827.0         50.0     0.247     0.199
              252.1     266.7         14.6         827.0         875.0         48.0     0.398     0.363
ECW-025       176.2     179.7          3.6         578.0         589.7         11.7     0.350     0.311
              180.2     182.9          2.7         591.1         600.0          8.9     0.114     0.079
              189.0     297.2        108.2         620.0         975.0        355.0     0.319     0.272
              297.2     319.8         22.6         975.0       1,049.3         74.3     0.238     0.042
ECW-026       145.0     164.3         19.3         475.8         539.0         63.2     0.262     0.226
              164.3     170.1          5.8         539.0         558.0         19.0     0.653     0.616
              170.1     200.6         30.5         558.0         658.0        100.0     0.239     0.195
              203.6     252.4         48.8         668.0         828.0        160.0     0.419     0.271
incl.         205.3     212.8          7.5         673.4         698.0         24.6     1.136     1.011
              252.4     287.7         35.4         828.0         944.0        116.0     0.422     0.041
ECW-027       306.9     310.6          3.7       1,007.0       1,019.0         12.0     0.431     0.371
              316.1     331.3         15.2       1,037.0       1,087.0         50.0     0.224     0.193
              353.6     354.6          1.1       1,160.0       1,163.5          3.5     0.952     0.937
              360.6     368.5          7.9       1,183.0       1,209.0         26.0     0.255     0.251
              377.3     404.5         27.1       1,238.0       1,327.0         89.0     0.303     0.296
              404.5     469.4         64.9       1,327.0       1,540.0        213.0     0.134     0.031
ECW-028       199.9     208.5          8.5         656.0         684.0         28.0     0.293     0.254
              223.4     226.2          2.7         733.0         742.0          9.0     0.101     0.048
              231.0     246.3         15.2         758.0         808.0         50.0     0.161     0.138
              276.8     279.8          3.0         908.0         918.0         10.0     0.174     0.150
              325.5     331.6          6.1       1,068.0       1,088.0         20.0     0.884     0.704
              356.8     359.7          2.9       1,170.5       1,180.0          9.5     0.180     0.121
              359.7     396.2         36.6       1,180.0       1,300.0        120.0     0.181     0.025
ECW-029       141.4     184.9         43.4         464.0         606.5        142.5     0.308     0.266
              184.9     219.2         34.3         606.5         719.0        112.5     0.815     0.774
incl.         184.9     200.1         15.2         606.5         656.5         50.0     1.207     1.175
              219.2     240.5         21.3         719.0         789.0         70.0     0.464     0.412
              240.5     283.2         42.7         789.0         929.0        140.0     0.503     0.409
              283.2     333.5         50.3         929.0       1,094.0        165.0     0.246     0.029

(1) Intervals are presented in core length and are drilled with dip angles between 55 degrees and 75 
degrees to target zones for expansion of mineralization. 
(2) Drill assays assume a mineralized cut-off grade of 0.1 per cent CuT (total copper) reflecting the 
potential for heap leaching in the case of oxide and enriched material, or to provide typical average 
grades in the case of primary material. Most holes were terminated in primary mineralization. 
(3) Assay results are not capped. Intercepts are aggregated within geological confines of major 
mineral zones.

Quality assurance/quality control

Drilling completed on the project in 2020 was supervised by on-site Arizona Sonoran Copper Company 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, Ariz., for analysis. Skyline's quality control system complies with global certifications for quality International Organization for Standardization 9001:2008.

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

About Arizona Sonoran Copper Company Inc.

Arizona Sonoran Copper Company's objective is to become a mid-tier copper producer with low operating costs, develop the Cactus project 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-per-cent interest in the Cactus project (former Asarco, Sacaton mine), which is situated on private land in an infrastructure-rich area of Arizona. The company is led by an executive management team and board, which have a long-standing record of successful project delivery in North America complemented by global capital markets expertise.

We seek Safe Harbor.

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