Tropico: Located in the Fresnillo District - World's Largest Silver Mining Camp
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The Tropico Project is located in the Fresnillo mining district in Zacatecas, Mexico. Radius has entered into an option agreement with local claim owners to acquire 100% of the property. The Tropico target is highway accessible and has not been previously drill tested.1 In early November 2023, Radius Gold completed an initial 1300m program of diamond drilling in 8 drillholes, with all pending assays received.
Drilling defined a large gold mineralized breccia body that starts at surface and to date defined 250m down dip. Gold grades were starting to increase with depth from holes 1, 2, 3, 4, & 6, (see press release Nov. 7, 2023)2 but unfortunately the latest gold assay results from the deepest hole 8 are weak.(See Figure 1 and corresponding Table 1.). The drilling encountered wide zones of classic low sulphidation epithermal alteration, high level chalcedonic silica, banded stockwork and massive quartz veining, and breccias with gold mineralization, but not significant high grade mineralization.3
Given the unexpected flat dip of the target breccia to the east and the significantly lower gold assays in hole 8, pursuing the breccia body down dip is not justified at this time. Radius geological team interprets the breccia body to be part of a larger diatreme and/or explosive volcanic breccia system. Targeting the source of the epithermal gold mineralization will require further evaluation and likely an agreement with Geological Survey of Mexico (GSM), which controls ground surrounding the Tropico property. Radius has had formal and positive discussions with the GSM, but any agreement would take considerable time. 3
Figure 1: Tropico cross-section with drill results
Table 1: Tropico Drill Results - Key Intercepts
Key Intercepts
DRILLHOLE
FROM (m)
TO (m)
INTERVAL (m)
GOLD (g/t)
SILVER (g/t)
TDD001
24.20
54.90
29.18*
0.34
3.9
TDD002
55.50
85.60
30.10
0.35
2.7
TDD003
0.00
44.20
44.20
0.28
2.1
TDD004
54.00
82.52
28.52
0.28
2.6
TDD006
51.00
87.25
36.25
0.55
9.1
Incl.
66.00
73.52
7.52
1.40
29.3
And
96.40
108.70
12.30
0.44
2.7
TDD008
69.00
78.02
9.02
0.11
2.6
And
90.22
91.75
1.53
0.33
2.6
And
135.97
140.55
4.58
0.22
1.0
And
186.30
206.12
19.82
0.15
1.9
*Width of samples submitted, 1.52m of no recovery (gap)
Quality Assurance and Quality Control
Drilling is carried out using PQ and NQ size tooling. Drill core is cut in half using a rock saw with one-half of the core then taken as a sample for analysis. Sample intervals are generally 1.5m, producing samples of between 2 to 9 kg. Half-core samples are delivered to the ALS Geochemistry laboratory facilities in Mexico. The samples are fire assayed for Au and are analysed for Ag and multi-elements using method code ME-ICP61 following a four-acid digestion. Overlimits are analysed using an appropriate method. Multi-element geochemical standards and blanks are routinely entered into the drill core sample stream to monitor laboratory performance. Quality control samples submitted to ALS were returned within acceptable limits.
Technical Information
Bruce Smith, M.Sc. (Geology), a member of the Australian Institute of Geoscientists, is Radius’ Qualified Person as defined by National Instrument 43-101 - Standards of Disclosure for Mineral Projects. Mr. Smith has 30 years of mineral exploration experience and has prepared and approved the technical information contained in this website.
1 Please see Radius Gold Inc. News Release: Radius Gold discovers gold mineralized "hotspring type" sinter and breccia pipe target in Fresnillo district, Zacatecas, March 21, 2023.
2 Please see Radius Gold Inc. News Release: Radius Gold provides update on drilling at Tropico Project, Nov. 7, 2023
3 Please see Radius Gold Inc. News Release: Radius Gold provides final results for drilling at Tropico Project, November 20, 2023.
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Tropico - Drill Hole No. 1
Tropico - Drill Hole No. 2
Tropico - Drill Hole No. 3
Tropico - Drill Hole No. 4
Tropico - Drill Hole No. 6
Tropico - Drill Hole No. 8
