Amalia Project- Mexico
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Amalia Project
The Amalia Project is located 25 km SW of the historic Guadalupe y Calvo mining district in Chihuahua (Figure 1). Radius geologists discovered high grade epithermal silver-gold mineralization in several veins, vein breccias, and disseminated zones over 3.5 km of strike length and a 750 m vertical interval following the trace of a large regional fault zone. Radius initially acquired the 380 hectare core license and subsequently staked an additional regional license covering multiple target areas (Figure 2) that totals 10,250 hectares. In July 2018 Radius entered into an agreement with Pan American Silver Corp. ("Pan American") to drill and explore the project.
Mining Property
The 10,250 hectare property includes the Amalia, California and El Cuervo major vein systems (Figure 2). Within these major vein systems are multiple targets, outlined in Figure 3, all of which are included in Radius's consolidated concessions that extend for more than 10 km of strike length of the regional fault.
Structures:
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Amalia Vein, 3 km length with high grade Au-Ag, includes drill defined San Pedro high grade zone (Figure 4, 5, 6)
- California Vein, 2 km length with high grade Au-Ag on surface and in drilling (Figure 7)
- El Cuervo Vein, 1 km length with anomalous Ag-Au (Figure 8, 21, 22, 23).
Geology and Mineralization:
The main targets at Amalia are located along a large regional scale NW trending fault system, which separates the upper rhyolite volcanics from the lower andesite volcanics. Radius has identified outcropping mineralization over 3.5 km along this structural break. The principal target at San Pedro, outcrops as a 500m x 70m zone of intense epithermal multiphase silicification, and brecciation with stockwork veining occurring at the contact between the upper rhyolite and lower andesite volcanic sequence. Figure 9 showcases multiphase silicification events in drill core from San Pedro. See Figures 10 and 11 for 1m core samples with electrum mineralization within the quartz sulphide stockwork zone.
Summary of Drilling
57 drill holes totalling 19,154m has been completed at the Amalia project. 10,588m in 31 drillholes has been completed on the Amalia vein system, and 3,814m in 14 drillholes completed in the California vein system and 4,752 in 12m has been completed at the El Cuervo zone. The current drill program is focused on the sub-parallel El Cuervo structure where stockwork veining and breccias up to 40m wide have been defined semi-continuously for 1.5k and surface rock chip samples returned up to 637 g/t Ag and 2.24 g/t Au.
Within the greater Amalia project there are many targets remaining to drill test including: Oro Viejo, La Caverna, California SE, El Durazno and Palmillas.
With the San Pedro zone drill defined and infill and expansion drilling planned for this year at California, Radius will be in a position to define a significant resource at the Amalia Property and is excited by the possibility of new discoveries at multiple targets that remain to be drill tested.
Table of Intercepts – Amalia Vein SystemDRILLHOLE FROM (m) TO (m) INTERVAL (m) EST. TRUE WIDTH Ag (g/t) Au (g/t) AMDD18-001
44.35
56.35
12.00
9.5
44
0.10
AMDD18-002
no significant mineralized intercepts
AMDD18-003
107.44
137.44
30.00
24
65
0.30
AMDD18-004
no significant mineralized intercepts
AMDD18-005
no significant mineralized intercepts
AMDD18-006
no significant mineralized intercepts
AMDD18-007
129.10
133.10
4.00
3
229
0.29
AMDD18-008
98.65
99.65
1.00
0.8
521
2.28
And
126.65
131.65
5.00
4
571
1.14
AMDD18-009
140.35
174.35
34.00
29.44
406
6.13
Including
144.35
170.35
26.00
22
517
7.80
Including
165.35
170.35
5.00
4
1378
14.71
AMDD19-010
210.70
254.70
44.00
34
309
12.39
AMDD19-011
170.50
176.50
6.00
4
24
1.05
Including
173.50
175.00
1.50
1.06
31
2.52
AMDD19-012
176.90
181.90
5.00
4
647
0.09
AMDD19-013
no significant mineralized intercepts
AMDD19-014
235.70
263.70
28.00
24
126
2.30
Including
256.70
259.70
3.00
2.6
761
9.85
AMDD19-015
213.70
317.70
104.00
74.8
55
3.10
Including
216.70
297.70
81.00
65
61
3.75
Including
234.70
255.70
21.00
17
65
7.91
AMDD19-016
251.20
371.20
120.00
78
21
1.53
Including
252.45
318.25
65.80
43
23
2.36
Including
293.20
316.40
23.20
15
41
4.61
AMDD19-017
316.55
322.10
5.55
4.19
-
0.88
AMDD19-018
268.15
269.45
1.30
0.75
2320
12.50
And
332.45
346.10
13.65
7.83
22
1.39
AMDD19-019
336.70
344.10
7.40
6.34
22
0.49
AMDD20-020
no significant mineralized intercepts
AMDD20-021
no significant mineralized intercepts
AMDD20-022
313.05
336.15
23.10
14.50
321
6.80
Including
319.40
325.65
6.25
4.18
813
18.34
AMDD21-023
520.85
530.40
9.55
6.50
151
0.59
AMDD21-024
no significant mineralized intercepts
AMDD21-025
150.85
151.70
0.85
0.60
475
1.48
And
170.85
178.45
7.60
5.00
70
1.73
And
239.75
249.40
9.65
7.28
57
0.36
And
274.25
277.85
3.60
2.72
55
0.32
And
285.85
293.90
8.05
5.50
99
0.93
AMDD21-026
165.50
166.65
1.15
0.80
151
3.32
And
239.75
243.40
3.65
2.37
70
1.81
And
283.40
284.45
1.05
0.70
53
4.59
And
320.70
323.70
3.00
2.00
8
3.17
And
347.00
347.95
0.95
0.62
65
0.57
And
352.90
353.40
0.50
0.33
115
0.25
AMDD21-027
no significant mineralized intercepts
AMDD21-028
no significant mineralized intercepts
AMDD21-029
no significant mineralized intercepts
AMDD21-030
no significant mineralized intercepts
AMDD21-031
133.75
147.00
13.25
13.25
117
0.90
The most recent program targeted the California vein system defining wide Au-Ag mineralization across 1km of strike length. The initial shallow drilling has intersected multiphase breccias and stockwork veins with significant widths up to 50m and high grades with individual samples up to 4210 g/t Ag and 33.1 g/t Au. See Figure 12 for a drill core photo of Ag-Au mineralization from the California vein. Some results from drilling at California are still pending. See Figures 15 to 20 for cross sections of the drilling at California vein system with results.
Table of Intercepts – California Vein SystemDRILLHOLE FROM (m) TO (m) INTERVAL (m) EST. TRUE WIDTH Ag (g/t) Au (g/t) AMDD21-032
38.10
44.30
6.20
5.62
93
0.43
And
62.70
90.00
27.30
24.74
90
0.26
Including
78.00
80.35
2.35
2.13
220
0.61
Including
86.00
88.60
2.60
2.36
263
1.37
AMDD21-033
148.60
199.00
50.40
23.66
50
0.05
Including
178.80
194.25
15.45
7.25
68
0.07
Including
188.20
192.40
4.20
1.97
113
0.12
AMDD21-034
145.70
149.65
3.95
3.58
487
2.15
Including
146.80
149.65
2.85
2.58
658
2.96
Including
148.00
148.50
0.50
0.45
2810
15.15
AMDD21-035
212.65
229.80
17.15
10.32
35
0.07
And
243.10
243.50
0.40
0.24
482
3.36
AMDD21-036
108.60
110.35
1.75
1.59
578
0.27
Including
109.90
110.35
0.45
0.41
1930
0.71
AMDD21-037
177.95
180.40
2.45
1.30
37
0.18
Including
177.95
178.55
0.60
0.32
54
0.53
AMDD21-038
151.00
162.20
11.20
9.06
379
1.26
Including
156.20
157.00
0.80
0.65
4244
16.96
Including
156.20
156.55
0.35
0.28
4210
33.10
AMDD21-039
308.20
335.10
26.90
20.30
353
2.59
Including
308.20
331.90
23.70
17.89
394
2.93
Including
314.45
321.95
7.50
5.66
976
7.38
Including
317.85
321.95
4.10
3.09
1520
12.61
AMDD21-040
385.35
396.50
11.15
6.55
99
0.64
Including
385.35
393.55
8.20
4.82
120
0.78
Including
388.45
391.10
2.65
1.56
210
1.12
Including
389.60
391.10
1.50
0.88
249
1.28
AMDD21-041
144.00
145.25
1.25
1.13
36
0.03
AMDD21-042
216.95
218.50
1.55
0.89
24
0.003
AMDD21-043
102.25
115.00
12.75
9.48
259
0.54
Including
108.05
114.05
6.00
4.46
483
1.06
Including
108.05
111.25
3.20
2.38
705
1.92
AMDD21-044
273.00
312.65
39.65
29.47
204
0.35
Including
283.00
312.65
29.65
22.03
256
0.44
Including
287.50
306.55
19.05
14.16
346
0.63
Including
301.00
306.55
5.55
4.12
770
1.69
Including
304.00
305.65
1.65
1.23
1446
5.11
Including
305.00
305.65
0.65
0.48
2470
11.90
AMDD21-045
333.75
421.00
87.25
50.04
60
0.05
Including
339.50
350.45
10.95
6.28
104
0.09
Including
359.50
362.60
3.10
1.78
165
0.08
Including
413.90
417.20
3.30
1.89
187
0.29
Table of Intercepts – El Cuervo Vein System
DRILLHOLE FROM (m) TO (m) INTERVAL (m) EST. TRUE WIDTH Ag (g/t) Au (g/t) AMDD21-046 214.35 214.80 0.45 0.43 214 0.52 And 225.55 228.35 2.8 2.70 122 0.13 And 239.25 270.20 30.95 29.90 44 0.13 Including 239.25 242.95 3.7 3.57 158 0.49 Including 239.25 240.95 1.7 1.64 233 0.31 And 292 295.5 3.5 3.38 203 0.53 Including 294.40 295.50 1.10 1.06 381 1.31 AMDD21-047 245.10 341.10 96.00 83.14 167 0.54 Including 279.90 341.10 61.20 53.00 232 0.65 Including 279.90 325.10 45.20 39.14 290 0.80 Including 290.40 297.75 7.35 6.37 592 0.69 Including 300.00 317.35 17.35 15.03 302 1.13 Including 309.50 317.35 7.85 6.80 438 1.12 AMDD21-048 214.85 216.45 1.60 1.5 116 1.39 And 222.15 223.50 1.35 1.3 302 0.56 And 227.00 233.30 6.30 6.1 77 0.61 Including 229.60 231.80 2.20 2.1 125 0.68 And 265.60 303.45 37.85 36.6 54 0.34 Including 286.90 297.40 10.50 10.1 84 0.75 Including 294.75 296.40 1.65 1.6 139 4.02 AMDD22-049 304.90 306.35 1.45 1.2 62 0.81 And 340.85 351.65 10.80 9.3 63 0.80 And 358.40 376.20 17.80 15.3 144 0.92 Including 365.55 376.20 10.65 9.1 190 1.01 Inlcuding 365.55 366.55 1.00 0.9 469 0.97 Including 375.00 376.20 1.20 1.0 483 3.94 AMDD22-050 336.75 337.55 0.80 0.60 107 2.60 And 347.10 349.00 1.90 1.50 53 0.27 And 394.90 409.50 14.60 11.20 117 0.92 Including 394.90 395.80 0.90 0.70 1185 6.93 Inlcuding 406.45 409.50 3.05 2.30 104 1.32 AMDD22-051 348.50 349.55 1.05 0.80 125 2.10 And 398.65 416.00 17.35 13.70 253 1.11 Including 398.65 399.25 0.60 0.50 1510 2.52 Including 408.40 416.00 7.60 6.00 414 2.10 Including 410.50 413.15 2.65 2.10 555 4.94 Including 412.00 413.15 1.15 0.90 637 10.70 AMDD22-052 278.20 290.00 11.80 10.60 450 1.31 Including 281.35 288.00 6.65 6.00 695 1.44 Including 285.90 288.00 2.10 1.90 1577 2.27 Including 285.90 287.30 1.40 1.30 1800 0.50 And 308.70 310.00 1.30 1.20 37 1.22 And 327.10 328.35 1.25 1.10 55 0.68 And 332.85 336.00 3.15 2.80 84 0.87 Including 334.50 336.00 1.50 1.30 91 1.48 AMDD22-053 Abandoned AMDD22-054 No Significant Intercepts All drill holes have been collared from 2 platforms with the holes fanned out testing approximately 350m of strike extent and 300m depth. The El Cuervo structure remains open to expansion along strike and to depth and so far, has been tested by 12 drillholes for a total of 4752 meters. Assay results for holes AMDD22-055 to AMDD22-057 are still pending. The full table of results as well as plan maps showing the El Cuervo drilling to date are presented below.
Exploration Targets
Palmillas Target
The Palmillas target is a small historic working 1.5km along the Amalia Fault from the San Pedro zone. At Palmillas, Radius took a 4m section that assayed 9.5 g/t Au and 73 g/t Ag, and a 10.5m section that assayed 1.54 g/t Au and 58 g/t Ag. Mineralization is hosted within fault-controlled quartz vein breccias similar in style to San Pedro (Figure 14).
Within the 10,250 hectare Amalia Property are multiple prospects including Palmillas, Dulces, Guadalupe and Durazno, which have been prospected and are developing as future drilling targets.
Oro Viejo, La Caverna, California SE, El Pando
Untested vein breccia targets along the California vein system, with gold grades from below detection to 27 g/t
Quality Assurance and Quality Control
Pan American Silver has been the operator on Amalia since Q3 of 2019; all their surface samples and drill core have been analyzed at an ISO/IEC accredited ALS Geochemistry laboratory.
Previous rock samples are acquired by Radius Gold's geologists and trained sampling teams under the supervision of the geologists. Majority of the rock samples consist of chip channels ranging from 0.5 to 3m. These samples are forwarded to an ALS Geochemistry laboratory for analysis of Au, Ag and other elements using ALS codes Au-ICP21 and ME-ICP61. Au-ICP21 is a fire assay method with an ICP-AES finish for Au. ME-ICP21 is a 33 multi-element (includes Ag) analysis that uses a four acid-digestion with an ICP-AES finish. For over-limits of Au or Ag, analysis using a fire assay method with gravimetric finish is automatically conducted. Quality control samples (blankets, standards etc.) are included with the field samples at regular intervals. The QA samples' results are monitored to ensure the returned results are within the acceptable range.
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Amalia
San Pedro
California
El Cuervo
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AMDD18-009
AMDD19-010
AMDD19-014
AMDD19-015
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January 26, 2022
High Grade Gold & Silver Amalia Project- Drilling Now! | Jan 2022 Update
February 23, 2021
Bruce Smith Reviews the Amalia Project
