Radius Gold defines drill targets and identifies second potential breccia pipe target at Tropico project, Zacatecas.
news release
June 7th, 2023
Radius Gold defines drill targets and identifies second potential breccia pipe
target at Tropico project, Zacatecas.
Vancouver, British Columbia – Radius Gold Inc. (TSXV: RDU) (“Radius” or the “Company”) is pleased to
announce progress at its Tropico project where the Company has defined a gold mineralized “hotspring
type” sinter and breccia pipe target within the Fresnillo district, Zacatecas, Mexico.
In the 3 months since acquisition (see press release dated 21 March 2023), Radius completed geological
mapping, surface rock chip sampling and a deep penetrating CSAMT geophysical survey to define drill
targets on the Tropico epithermal gold system.
In addition to the out -cropping Tropico sinter and breccia pipe, the CSAMT survey defined a second
strong resistive feature, located 300m west of Tropico named Capricorn, that the Radius geological team
interprets to be a second potential breccia pipe structure.
Tropico Location
The Tropico target is located 30 km northwest of Fresnillo city, Zacatecas, Mexico. The Fresnillo mining
district is one of the world ’s most productive epithermal systems and hosts the world’s oldest
continuously operating mines producing silver , gold, copper, lead, and zinc for approximately five
centuries, since 1554. The district has over 150 veins, mantos and chimney deposits including +30 large
scale ore producers and it continues to deliver new discoveries.
CSAMT Geophysical Survey
CSAMT geophysical surveys are a commonly used exploration method to define subsurface resistivity
profiles up to 1km depth below surface. In epithermal systems silicified veins and breccias typically stand
out as a resistive high. Radius completed 4 CSAMT sections between 1 and 1.5km long, on 100m line
spacings, targeting the Tropico breccia pipe (Figure 1 below).
Tropico target is defined by surface mapping and geochemical sampling outlining a sinter and silicified
breccia pipe with a strong gold mercury arsenic antimony geochemical signature (see press release dated
21 March 2023). The Tropico gold system is roughly oval shape d, 450m long by 250m wide orientated
NNE. The CSAMT survey defined a coherent resistive feature that precisely matched the surface geology,
defining a robust pipe shaped target that starts at surface directly below the outcropping silicification
and extends to 800m depth at the maximum extent of the survey. The resistive target is approximately
10 times more resistant than adjacent host rocks . In the coming months Radius plans to commence a
2000m drill program targeting a Fresnillo style gold silver mineralized system bel ow the outcropping
sinter (Figures 2 & 3 below).
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Capricorn is a new and “blind” target identified in the recently completed CSAMT geophysical survey.
Located parallel to Tropico, approximately 300m to the west, the CSAMT survey defines a robust deep
penetrating (to 800m) resistive pipe shaped body, on each of the 4 x 100m spaced survey lines. The
resistive target is approximately 200m wide and similar in shape and format to the Tropico target.
Capricorn system is not exposed at surface. When the Radius team received the geophysical survey
results, the lines were immediately walked and each 25m point inspected in detail for evidence of
mineralization below. The entire Capricorn target is covered in a thick layer of calcrete (caliche) and soil
with no outcrop e xposed. At 2 locations within the target area Radius dug pits 2m deep through the
calcrete and soil cover and encountered pervasive kaolin alteration and minor silicification confirming
the presence of a hydrothermal system.
The host rocks for the Tropic o property are unaltered thinly bedded limestones and sediments, which
are exposed at several locations on the margins of the property and away from the known mineralization.
Radius geological team considers it is significant to encounter intense and destructive clay alteration on
top of the Capricorn target and consistent with the geological model. Capricorn is open to expansion,
both north and south. Radius plans further pitting and geochemical sampling to define mineralization
and aid drill targeting (Figures 2 & 3 below).
Simon Ridgway, Executive Chairman, comments:
“I have recently had the pleasure to tour Tropico property with CEO Bruce Smith and our geological team,
and I am impressed by the target and excited to start drilling. I am struck by the similarity to the Cerro
Blanco project (Bluestone Resources hotspring sinter project with M&I resources of 3.1 Moz (M&I) @1.5
g/t Au*) which the Goldgroup team were fortunate to discover earlier in my career . Tropico has every
indication for the potential to host a similar discovery. Our local team have done a great job defining the
targets and obtaining the landowner agreements, and are rapidly moving towards an exciting summer
drill program.”
Figure 1. Tropico project aerial view with geological model.
Rock Sample (Au)
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Figure 2. Tropico project CSMAT geophysical section with geological model.
Figure 3. Tropico project geophysical interpretation.
Target Model
Chimney bodies in the Fresnillo district are often cylindrical shaped brecciated pipes that crosscut the
cretaceous volcano sedimentary host units and predate or are contemporaneous with silver , gold and
base metal veins. The vein systems at Fresnillo are most frequently “blind”, meaning they do not outcrop,
and the tops of the orebodies are concealed to a depth of approximately 150m to 300m. Surface
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expressions can include geochemical path finder halos, thin discontinuous quartz carbonate veinlets, and
critically low temperature chalcedonic silica and sinter.
Sinter is a formation of opaline silica deposited in a hotspring environment at surface. Sinter typically has
very low grade or barren precious metal content but can be the surface indication of a mineralized
system at depth. There are many famous examples of epithermal gold and silver mines located below
sinter deposits, both within the Fresnillo district and globally (e.g. Waihi – New Zealand, Lihir – PNG,
McLaughlin – USA).
Agreement Terms
Radius has entered into an option agreement with a local Mexican group to acquire 100% of the 200 ha
Tropico claim. Payment on signing (completed) US$200,000. A further US$200,000 can be paid in 6
monthly installments over a period of 42 months, starting with US$25,000 at month 12 from signing in
order to maintain the property option. At month 48, Radius can acquire 100% of the property for US$5
million. A n additional milestone payment of US$5 million is conditional on delivering a compliant
feasibility study or at the start of mine construction. A further US$3 million to be paid if reserves exceed
2 million gold equivalent (Au + Ag) ounces. If Radius does not complete payment of the milestone US$5
million within 8 years of signing, the property would return 100% to original owners.
Radius Grants Options
Radius has granted a total of 2,000,000 stock options to directors, officers, employees and consultants, of
which 1,395,000 options replace options which recently expired unexercised. The options are exercisable
at $0.18 per share and, if not exercised, expire 10 years after granting.
Quality Assurance and Quality Control
Reported assays are rock chip samples taken by Radius geologists. Reported samples were delivered to
ALS Geochemistry in Chihuahua, an internationally certified laboratory . The samples were analysed by
ALS for Au by fire assay (Au -ICP21), and Ag and multi-elements using a four -acid digestion with ICP-AES
finish (ME -ICP61). Radius routinely inserts multi -element geochemical standards and into the sample
stream to monitor laborator y performance. Quality control samples submitted 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
collected the samples on site at Tropico and approved the technical information contained in this news
release.
(*Cerro Blanco data from N.I. 43-101 Technical Report & Feasibility Study of the Cerro Blanco Gold Project
Department of Jutiapa, Guatemala. Effective Date: February 22, 2022)
Radius Gold Inc.
Radius has a portfolio of projects located in Mexico and Guatemala which it continues to advance, utilizing
partnerships where appropriate in order to retain the Company’s treasury. At the same time,
management is seeking out additional investment and project acquisition opportunities across the globe.
Radius is a member of the Gold Group of companies, led by Simon Ridgway.
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ON BEHALF OF THE BOARD
Bruce Smith
President and CEO
Symbol: TSXV-RDU
Contact: Bruce Smith
200 Burrard Street, Suite 650
Vancouver, BC V6C 3L6
Tel: 604-801-5432; Toll free 1-888-627-9378; Fax: 604-662-8829
Email: [email protected]
Website: www.radiusgold.com
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Certain statements contained in this news release constitute forward -looking statements within the meaning of
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