Arizona Sonoran Drilling Extends Mineralization West of the Modelled Cactus Open Pit
17 November 2021 - 12:30PM
Business Wire
Arizona Sonoran Copper Company Inc. (TSX:ASCU) (“ASCU” or
the “Company”), an emerging US-based copper developer and near-term
producer, announces the first set of drilling results from its 8
initial diamond drill holes for over 2,938 m (9,639 ft) along the
western periphery of the Cactus West pit. The drilling demonstrates
continuous leachable mineralization including extensions outwards
from the modelled pit shell by at least 61 m (200 ft).
Mineralization from the infill drilling remains open to the west
(see FIGURES 1 – 3) and
TABLE 1 below.
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 ongoing
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
TABLE 1, below.
Drilling Highlights (please see TABLE 1 for full
set of drilling results)
- Leachable material identified extending 61 m (200 ft) west from
the modelled open pit
- ECW-029 0.774 % Cu TSol over 34 m (113 ft) of enriched
mineralization
- ECW-025 0.272% Cu TSol over 108 m (355 ft) of oxide
mineralization
- ECW-022 0.519% Cu TSol over 40 m (130 ft) of enriched
mineralization
- ECW-023 0.695% Cu TSol over 15.3 m (50.3 ft) of enriched
mineralization
George Ogilvie, Arizona Sonoran President and CEO 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 floatation 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 step out drilling and were further targeted by
the current infill program. This portion of the drilling traces the
NE-SW trend of the high-grade center of the historic Sacaton West
orebody. Results from this portion of the current drilling
reinforce the positive results from the previous step out 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.
TABLE 1: Drilling Highlights
Hole
Metres
Feet
TCu
Tsol
Mineralization
From
To
Length
From
To
Length
ECW-022
163.7
166.1
2.4
537.0
545.0
8.0
0.246
0.205
oxide
188.1
191.1
3.0
617.0
627.0
10.0
0.333
0.314
enriched
199.6
203.0
3.4
655.0
666.0
11.0
0.159
0.110
oxide
206.0
226.2
20.1
676.0
742.0
66.0
0.314
0.283
oxide
232.3
238.4
6.1
762.0
782.0
20.0
0.319
0.318
oxide
247.5
250.5
3.0
812.0
822.0
10.0
0.524
0.510
enriched
281.0
284.1
3.0
922.0
932.0
10.0
0.623
0.586
enriched
296.3
299.3
3.0
972.0
982.0
10.0
0.192
0.173
oxide
317.6
357.2
39.6
1042.0
1172.0
130.0
0.552
0.519
enriched
357.2
397.6
40.4
1172.0
1304.6
132.6
0.199
0.020
primary
ECW-023
156.3
158.2
1.9
512.7
519.0
6.3
0.270
0.203
oxide
164.3
170.4
6.1
539.1
559.0
19.9
0.115
0.044
oxide
172.5
175.6
3.1
565.9
576.0
10.1
0.175
0.157
enriched
194.7
210.0
15.3
638.7
689.0
50.3
0.750
0.695
oxide
236.5
239.6
3.0
776.0
786.0
10.0
0.284
0.261
oxide
263.9
294.4
30.6
865.7
966.0
100.3
0.397
0.356
oxide
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
1001.5
35.5
0.461
0.377
enriched
305.3
425.5
120.2
1001.5
1396.0
394.5
0.385
0.032
primary
incl.
361.5
395.3
33.8
1186.0
1297.0
111.0
0.580
0.038
ECW-024
149.8
206.3
56.5
491.6
677.0
185.4
0.247
0.195
oxide
206.3
218.5
12.2
677.0
717.0
40.0
0.668
0.607
enriched
227.7
230.7
3.0
747.0
757.0
10.0
1.275
1.178
enriched
236.8
252.1
15.2
777.0
827.0
50.0
0.247
0.199
oxide
252.1
266.7
14.6
827.0
875.0
48.0
0.398
0.363
enriched
ECW-025
176.2
179.7
3.6
578.0
589.7
11.7
0.350
0.311
oxide
180.2
182.9
2.7
591.1
600.0
8.9
0.114
0.079
oxide
189.0
297.2
108.2
620.0
975.0
355.0
0.319
0.272
oxide
297.2
319.8
22.6
975.0
1049.3
74.3
0.238
0.042
primary
ECW-026
145.0
164.3
19.3
475.8
539.0
63.2
0.262
0.226
oxide
164.3
170.1
5.8
539.0
558.0
19.0
0.653
0.616
enriched
170.1
200.6
30.5
558.0
658.0
100.0
0.239
0.195
oxide
203.6
252.4
48.8
668.0
828.0
160.0
0.419
0.271
enriched
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
primary
ECW-027
306.9
310.6
3.7
1007.0
1019.0
12.0
0.431
0.371
oxide
316.1
331.3
15.2
1037.0
1087.0
50.0
0.224
0.193
oxide
353.6
354.6
1.1
1160.0
1163.5
3.5
0.952
0.937
enriched
360.6
368.5
7.9
1183.0
1209.0
26.0
0.255
0.251
enriched
377.3
404.5
27.1
1238.0
1327.0
89.0
0.303
0.296
enriched
404.5
469.4
64.9
1327.0
1540.0
213.0
0.134
0.031
primary
ECW-028
199.9
208.5
8.5
656.0
684.0
28.0
0.293
0.254
oxide
223.4
226.2
2.7
733.0
742.0
9.0
0.101
0.048
oxide
231.0
246.3
15.2
758.0
808.0
50.0
0.161
0.138
oxide
276.8
279.8
3.0
908.0
918.0
10.0
0.174
0.150
enriched
325.5
331.6
6.1
1068.0
1088.0
20.0
0.884
0.704
enriched
356.8
359.7
2.9
1170.5
1180.0
9.5
0.180
0.121
enriched
359.7
396.2
36.6
1180.0
1300.0
120.0
0.181
0.025
primary
ECW-029
141.4
184.9
43.4
464.0
606.5
142.5
0.308
0.266
oxide
184.9
219.2
34.3
606.5
719.0
112.5
0.815
0.774
enriched
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
oxide
240.5
283.2
42.7
789.0
929.0
140.0
0.503
0.409
enriched
283.2
333.5
50.3
929.0
1094.0
165.0
0.246
0.029
primary
- Intervals are presented in core length; are drilled with dip
angles between 55 degrees and 75 degrees to target zones for
expansion of mineralization.
- Drill assays assume a mineralized cut-off grade of 0.1% CuT
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.
- Assay results are not capped. Intercepts are aggregated within
geological confines of major mineral zones.
Table 2: Drill
details
Hole
Easting
Northing
Elevation
Depth
Azimuth
Dip
ECW-022
388487
63755.44
1442.515
1304.6
90
-45
ECW-023
388549.7
63522.79
1440.507
1396
85
-55
ECW-024
388655.8
63299.22
1440.143
1011
80
-50
ECW-025
388422.3
63084.55
1435.619
1049.3
70
-60
ECW-026
388733.6
63020.49
1436.774
944
70
-55
ECW-027
387759.6
63329.03
1434.005
1540
90
-60
ECW-028
388349.6
63761.94
1441.334
1300
94
-55
ECW-029
388731.2
63020.03
1436.823
1094
70
-80
Quality Assurance / Quality Control
Drilling completed on the
project in 2020 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,
who is a qualified person as defined by National Instrument 43-101–
Standards of Disclosure for Mineral Projects.
Links from the Press Release
FIGURES 1-3:
https://arizonasonoran.com/projects/cactus-mine-project/press-release-images/
Neither the TSX nor the
regulating authority has approved or disproved the information
contained in this press release.
About Arizona Sonoran Copper Company (www.arizonasonoran.com |
www.cactusmine.com)
ASCU’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% 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 track record of successful project delivery in North
America complemented by global capital markets expertise.
Forward-Looking Statements
Forward-looking statements involve known and unknown risks,
uncertainties and other factors which may cause the actual results,
performance or achievements of ASCU to be materially different from
any future results, performance or achievements expressed or
implied by the forward-looking statements. Factors that could
affect the outcome include, among others: future prices and the
supply of metals; the results of drilling; inability to raise the
money necessary to incur the expenditures required to retain and
advance the properties; environmental liabilities (known and
unknown); general business, economic, competitive, political and
social uncertainties; results of exploration programs; accidents,
labour disputes and other risks of the mining industry; political
instability, terrorism, insurrection or war; or delays in obtaining
governmental approvals, projected cash operating costs, failure to
obtain regulatory or shareholder approvals.
Although ASCU has attempted to identify important factors that
could cause actual actions, events or results to differ materially
from those described in forward-looking statements, there may be
other factors that cause actions, events or results to differ from
those anticipated, estimated or intended. Forward-looking
statements contained herein are made as of the date of this news
release and ASCU disclaims any obligation to update any
forward-looking statements, whether as a result of new information,
future events or results or otherwise, except as required by
applicable securities laws.
View source
version on businesswire.com: https://www.businesswire.com/news/home/20211117005583/en/
Alison Dwoskin, Director, Investor Relations 647-233-4348
adwoskin@arizonasonoran.com
George Ogilvie, President, CEO and Director 416-723-0458
gogilvie@arizonasonoran.com
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