Arizona Sonoran Drilling at MainSpring Confirms Near Surface Mineralization
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MainSpring -
Drilling at MainSpring has (1) extended the High Grade Mine Trend at
Highlights:
- The MainSpring zone is the southern extension of
- MainSpring is drilled over an area of at least 2,500 ft x 3,000 ft (762 m x 915 m), up-dip of
- ECM-198: Extends Parks/Salyer High Grade Mine Trend by 650 ft (198 m) to the southwest.
-
882 ft (269 m) @ 0.44% CuT of continuous mineralization
- Incl 83 ft (25 m) @ 1.41% CuT, 1.30% Cu TSol, 0.023% Mo (enriched)
- ECM-209: 256 ft (78 m) @ 0.51% CuT, 0.44% Cu TSol, 0.003% Mo (oxide)
- Incl 98 ft (30 m) @ 0.95% CuT, 0.87% Cu TSol, 0.004% Mo
- ECM-197: 367 ft (112 m) @ 0.31% CuT, 0.26% Cu TSol, 0.002% Mo (oxide)
- 125 ft (38m) @ 0.56% CuT, 0.47% Cu TSol, 0.003% Mo (enriched)
NOTE: True widths are not known
* Cactus Mineral Resources:
M&I: 446M tons @ 0.58% Cu for 5.2 Blbs copper
Inf: 234M tons @ 0.472% Cu for 2.2 Blbs copper
Resources at the Cactus project are a combination of leachable and primary mineralogizes
**Cactus Mineral Reserves: 276Mt @ 0.484% Cu TSol for 3.0 Blbs of copper
See PR dated
Drilling and Geology Recap
Of the 59 completed drill holes, 26 (35,529 ft | 10,828.3 m) were drilled in 2024, and 33 (35,718.9 ft | 10,887.1 m) were previously drilled by ASCU or the former option holder. The inferred drilling at MainSpring is defining a mineralized zone at least 2,500 ft by 3,000 ft (762 m x 915 m) that trends NW toward and is contiguous with the
MainSpring is the southern extension of the
*** See Mineral Resource Estimate and Technical Report,
TABLE 1: Significant Drilling Intercepts
Hole id |
Zone |
Feet |
Meters |
CuT (%) |
Cu Tsol (%) |
Mo (%) |
||||
from |
to |
length |
from |
to |
length |
|||||
ECM-197 |
oxide |
147.0 |
167.8 |
20.8 |
44.8 |
51.1 |
6.3 |
0.56 |
0.49 |
0.001 |
oxide/enriched |
233.2 |
277.6 |
44.4 |
71.1 |
84.6 |
13.5 |
0.36 |
0.33 |
0.002 |
|
oxide |
579.0 |
946.0 |
367.0 |
176.5 |
288.3 |
111.9 |
0.31 |
0.26 |
0.002 |
|
including |
602.0 |
727.0 |
125.0 |
183.5 |
221.6 |
38.1 |
0.56 |
0.47 |
0.003 |
|
ECM-198 |
oxide |
1,071.0 |
1,133.4 |
62.4 |
326.4 |
345.5 |
19.0 |
0.34 |
0.29 |
0.028 |
enriched |
1,373.0 |
1,456.0 |
83.0 |
418.5 |
443.8 |
25.3 |
1.41 |
1.30 |
0.023 |
|
including |
1,373.0 |
1,410.0 |
37.0 |
418.5 |
429.8 |
11.3 |
2.33 |
2.29 |
0.022 |
|
primary |
1,456.0 |
2,255.5 |
799.5 |
443.8 |
687.5 |
243.7 |
0.34 |
0.03 |
0.007 |
|
including |
1,508.5 |
1,588.0 |
79.5 |
459.8 |
484.0 |
24.2 |
0.47 |
0.04 |
0.014 |
|
and |
2,067.0 |
2,157.0 |
90.0 |
630.0 |
657.5 |
27.4 |
0.43 |
0.04 |
0.007 |
|
ECM-199 |
oxide |
197.0 |
261.2 |
64.2 |
60.0 |
79.6 |
19.6 |
0.10 |
0.04 |
0.001 |
oxide |
475.0 |
527.0 |
52.0 |
144.8 |
160.6 |
15.8 |
0.28 |
0.27 |
0.002 |
|
enriched |
558.0 |
642.0 |
84.0 |
170.1 |
195.7 |
25.6 |
0.44 |
0.42 |
0.001 |
|
including |
558.0 |
578.4 |
20.4 |
170.1 |
176.3 |
6.2 |
1.37 |
1.35 |
0.001 |
|
primary |
673.0 |
997.0 |
324.0 |
205.1 |
303.9 |
98.8 |
0.12 |
0.02 |
0.002 |
|
ECM-200 |
enriched |
637.0 |
807.0 |
170.0 |
194.2 |
246.0 |
51.8 |
0.40 |
0.27 |
0.001 |
primary |
807.0 |
953.0 |
146.0 |
246.0 |
290.5 |
44.5 |
0.17 |
0.018 |
0.001 |
|
including |
925.0 |
953.0 |
28.0 |
281.9 |
290.5 |
8.5 |
0.32 |
0.02 |
0.002 |
|
ECM-201 |
oxide |
208.0 |
245.0 |
37.0 |
63.4 |
74.7 |
11.3 |
0.12 |
0.08 |
0.001 |
enriched |
290.0 |
305.5 |
15.5 |
88.4 |
93.1 |
4.7 |
0.70 |
0.67 |
0.001 |
|
oxide |
345.0 |
408.6 |
63.6 |
105.2 |
124.5 |
19.4 |
0.25 |
0.20 |
0.001 |
|
enriched |
533.4 |
553.0 |
19.6 |
162.6 |
168.6 |
6.0 |
0.43 |
0.42 |
0.000 |
|
enriched |
618.6 |
707.0 |
88.4 |
188.5 |
215.5 |
26.9 |
0.58 |
0.51 |
0.006 |
|
including |
686.3 |
707.0 |
20.7 |
209.2 |
215.5 |
6.3 |
1.22 |
1.20 |
0.002 |
|
primary |
707.0 |
871.0 |
164.0 |
215.5 |
265.5 |
50.0 |
0.14 |
0.05 |
0.002 |
|
including |
707.0 |
745.0 |
38.0 |
215.5 |
227.1 |
11.6 |
0.41 |
0.06 |
0.007 |
|
ECM-202 |
enriched |
507.0 |
527.0 |
20.0 |
154.5 |
160.6 |
6.1 |
0.16 |
0.15 |
0.001 |
primary |
550.0 |
702.0 |
152.0 |
167.6 |
214.0 |
46.3 |
0.47 |
0.04 |
0.012 |
|
including |
570.0 |
612.0 |
42.0 |
173.7 |
186.5 |
12.8 |
0.77 |
0.05 |
0.021 |
|
ECM-203 |
oxide |
228.0 |
315.0 |
87.0 |
69.5 |
96.0 |
26.5 |
0.18 |
0.10 |
0.001 |
including |
267.7 |
300.5 |
32.8 |
81.6 |
91.6 |
10.0 |
0.30 |
0.22 |
0.002 |
|
enriched |
315.0 |
389.0 |
74.0 |
96.0 |
118.6 |
22.6 |
0.26 |
0.24 |
0.001 |
|
including |
315.0 |
352.6 |
37.6 |
96.0 |
107.5 |
11.5 |
0.38 |
0.37 |
0.001 |
|
enriched |
458.3 |
472.6 |
14.3 |
139.7 |
144.0 |
4.4 |
0.58 |
0.55 |
0.001 |
|
enriched |
518.3 |
636.0 |
117.7 |
158.0 |
193.9 |
35.9 |
0.31 |
0.28 |
0.001 |
|
ECM-204 |
oxide |
74.5 |
86.7 |
12.2 |
22.7 |
26.4 |
3.7 |
0.24 |
0.16 |
0.005 |
oxide |
438.0 |
487.2 |
49.2 |
133.5 |
148.5 |
15.0 |
0.27 |
0.22 |
0.002 |
|
ECM-205 |
oxide |
206.0 |
240.0 |
34.0 |
62.8 |
73.2 |
10.4 |
0.55 |
0.48 |
0.002 |
including |
228.0 |
230.2 |
2.2 |
69.5 |
70.2 |
0.7 |
5.98 |
5.31 |
0.011 |
|
oxide |
455.0 |
542.0 |
87.0 |
138.7 |
165.2 |
26.5 |
0.13 |
0.07 |
0.002 |
|
primary |
542.0 |
612.0 |
70.0 |
165.2 |
186.5 |
21.3 |
0.15 |
0.02 |
0.004 |
|
enriched |
678.0 |
698.6 |
20.6 |
206.7 |
212.9 |
6.3 |
0.13 |
0.10 |
0.000 |
|
ECM-206 |
oxide |
541.8 |
556.7 |
14.9 |
165.1 |
169.7 |
4.5 |
0.80 |
0.74 |
0.001 |
enriched |
643.6 |
701.8 |
58.2 |
196.2 |
213.9 |
17.7 |
0.33 |
0.32 |
0.001 |
|
enriched |
739.0 |
1,135.0 |
396.0 |
225.2 |
345.9 |
120.7 |
0.14 |
0.11 |
0.001 |
|
including |
741.0 |
786.0 |
45.0 |
225.9 |
239.6 |
13.7 |
0.32 |
0.27 |
0.001 |
|
primary |
1,135.0 |
1,515.8 |
380.8 |
345.9 |
462.0 |
116.1 |
0.10 |
0.03 |
0.001 |
|
ECM-207 |
oxide |
339.0 |
378.0 |
39.0 |
103.3 |
115.2 |
11.9 |
0.33 |
0.26 |
0.001 |
oxide |
465.3 |
561.7 |
96.4 |
141.8 |
171.2 |
29.4 |
0.13 |
0.09 |
0.001 |
|
ECM-208 |
oxide |
99.0 |
273.5 |
174.5 |
30.2 |
83.4 |
53.2 |
0.19 |
0.16 |
0.006 |
including |
184.0 |
239.0 |
55.0 |
56.1 |
72.8 |
16.8 |
0.32 |
0.28 |
0.007 |
|
oxide |
354.8 |
455.5 |
100.7 |
108.1 |
138.8 |
30.7 |
0.12 |
0.10 |
0.001 |
|
ECM-209 |
oxide |
175.0 |
195.0 |
20.0 |
53.3 |
59.4 |
6.1 |
0.25 |
0.22 |
0.001 |
oxide |
288.0 |
544.0 |
256.0 |
87.8 |
165.8 |
78.0 |
0.51 |
0.44 |
0.003 |
|
including |
361.8 |
460.0 |
98.2 |
110.3 |
140.2 |
29.9 |
0.95 |
0.87 |
0.004 |
|
ECM-210 |
enriched |
262.4 |
287.5 |
25.1 |
80.0 |
87.6 |
7.7 |
0.56 |
0.54 |
0.001 |
oxide |
515.4 |
577.0 |
61.6 |
157.1 |
175.9 |
18.8 |
0.60 |
0.53 |
0.004 |
|
including |
525.7 |
546.3 |
20.6 |
160.2 |
166.5 |
6.3 |
1.08 |
0.97 |
0.006 |
|
ECM-211 |
oxide |
453.0 |
479.0 |
26.0 |
138.1 |
146.0 |
7.9 |
1.42 |
1.35 |
0.001 |
enriched |
499.0 |
540.4 |
41.4 |
152.1 |
164.7 |
12.6 |
0.50 |
0.46 |
0.001 |
|
including |
519.0 |
540.4 |
21.4 |
158.2 |
164.7 |
6.5 |
0.88 |
0.87 |
0.001 |
|
enriched |
811.0 |
861.5 |
50.5 |
247.2 |
262.6 |
15.4 |
0.78 |
0.77 |
0.002 |
|
including |
811.0 |
817.0 |
6.0 |
247.2 |
249.0 |
1.8 |
4.05 |
3.99 |
0.003 |
|
ECM-212 |
enriched |
646.0 |
754.3 |
108.3 |
196.9 |
229.9 |
33.0 |
0.22 |
0.22 |
0.002 |
including |
656.2 |
687.0 |
30.8 |
200.0 |
209.4 |
9.4 |
0.41 |
0.41 |
0.002 |
|
primary |
787.0 |
1,251.0 |
464.0 |
239.9 |
381.3 |
141.4 |
0.14 |
0.02 |
0.002 |
|
including |
1,116.5 |
1,165.0 |
48.5 |
340.3 |
355.1 |
14.8 |
0.24 |
0.04 |
0.005 |
- Intervals are presented in core length and are drilled with vertical, or steep dip angles.
- Drill assays assume a mineralized cut-off grade of 0.1% CuT reflecting the potential for heap leaching of open pit material in the case of Oxide and Enriched and 0.1% CuT, in the case of Primary material, to provide typical average grades. Holes were terminated below the basement fault.
- Assay results are not capped. Intercepts are aggregated within geological confines of major mineral zones .
- True widths are not known
Table 2: Drilling details
Hole |
Easting (m) |
Northing (m) |
Elevation (ft) |
TD (ft) |
Azimuth |
Dip |
ECM-197 |
421689.7 |
3643892.2 |
1348.0 |
1127.0 |
0.0 |
-90.0 |
ECM-198 |
421392.3 |
3644657.0 |
1360.0 |
2353.0 |
0.0 |
-90.0 |
ECM-199 |
422150.8 |
3644345.0 |
1364.0 |
1117.1 |
0.0 |
-90.0 |
ECM-200 |
422303.0 |
3644344.0 |
1367.0 |
1004.9 |
0.0 |
-90.0 |
ECM-201 |
421842.0 |
3643891.0 |
1350.0 |
1063.2 |
0.0 |
-90.0 |
ECM-202 |
422299.0 |
3644186.0 |
1350.0 |
918.6 |
0.0 |
-90.0 |
ECM-203 |
421994.0 |
3643889.0 |
1350.0 |
876.8 |
0.0 |
-90.0 |
ECM-204 |
422299.0 |
3643887.2 |
1353.0 |
852.3 |
0.0 |
-90.0 |
ECM-205 |
422297.5 |
3644036.1 |
1357.0 |
857.0 |
0.0 |
-90.0 |
ECM-206 |
421539.6 |
3644198.2 |
1354.0 |
1549.0 |
0.0 |
-90.0 |
ECM-207 |
422453.0 |
3644037.0 |
1350.0 |
928.0 |
0.0 |
-90.0 |
ECM-208 |
422452.0 |
3643885.0 |
1356.0 |
895.7 |
0.0 |
-90.0 |
ECM-209 |
421840.8 |
3643738.5 |
1350.0 |
974.5 |
0.0 |
-90.0 |
ECM-210 |
421688.3 |
3643739.8 |
1340.0 |
945.1 |
0.0 |
-90.0 |
ECM-211 |
421538.4 |
3644045.6 |
1352.0 |
907.0 |
0.0 |
-90.0 |
ECM-212 |
421999.5 |
3644499.0 |
1366.0 |
1281.2 |
0.0 |
-90.0 |
Note: Drill locations are based on drill plans and hand-held GPS locators and may be adjusted slightly when properly surveyed.
Quality Assurance / Quality Control
Drilling completed on the project between 2020 and 2024 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
Technical aspects of this news release have been reviewed and verified by
Links from the Press Release
Figures 1-11: https://arizonasonoran.com/projects/exploration/maps-and-figures/
Neither the TSX nor the regulating authority has approved or disproved the information contained in this press release.
About
ASCU’s objective is to become a mid-tier copper producer with low operating costs and to develop the Cactus and
Forward-Looking Statements
This news release contains “forward-looking statements” and/or “forward-looking information” (collectively, “forward-looking statements”) within the meaning of applicable securities legislation. All statements, other than statements of historical fact, are forward-looking statements. Generally, forward-looking statements can be identified by the use of forward-looking terminology such as “plans”, “expect”, “is expected”, “in order to”, “is focused on” (a future event), “estimates”, “intends”, “anticipates”, “believes” or variations of such words and phrases or statements that certain actions, events or results “may”, “could”, “would”, or the negative connotation thereof. In particular, statements regarding ASCU’s future operations, future exploration and development activities or other development plans constitute forward-looking statements. By their nature, statements referring to mineral reserves or mineral resources constitute forward-looking statements. Forward-looking statements in this news release include, but are not limited to statements with respect to the results (if any) of further exploration work; the mineral resources and mineral reserves estimates of the
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.
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