IsoEnergy Announces Summer Exploration Plans
IsoEnergy Announces Summer Exploration Plans
Saskatoon, SK, June 19, 2023 – IsoEnergy Ltd. (“IsoEnergy” or the “Company”) (TSXV: ISO; OTCQX: ISENF)
is pleased to announce its summer 2023 exploration plans for its eastern Athabasca Basin uranium
properties (Figure 1).
Summer Program Highlights:
• Diamond drilling totaling 1, 100 metres will be conducted at the Hurricane deposit to test areas
identified with potential for resource expansion. Additionally, the Company will utilize industry
leading innovative technology to conduct a n Ambient Noise Tomography (ANT) survey on the
Hurricane deposit and surrounds . Further drilling may be conducted on areas potentially
identified through the ANT survey.
• Diamond drilling at the Larocque East, Ranger and Hawk projects totalling 4,700 metres.
• Airborne geophysical surveying at the East Rim, Trident , Collins Bay Extension and Full Moon
projects.
Tim Gabruch, President and Chief Executive Officer commented: “ A review of the Hurricane resource
drilling, guided by our recently appointed vice -president, exploration, Dr. Darryl Clark, has highlighted
some areas for further drilling, including significant step out targets to the north and east of the main zone
of mineralization, aimed at identifying additional mineralized areas for potential resource extension. In
conjunction with this work, we are excited to apply an innovative geophysical technique using Ambient
Noise Tomography to provide improved geological information. If this technique is successful, it is
expected to result in fewer drill holes and less environmental impact. This is consistent with IsoEnergy
objectives to limit our footprint as we undertake to help supply uranium required by the nuclear energy
industry in its role as a key contributor to the green energy transition and as a secure source of energy
globally.”
Dr. Darryl Clark, Vice President, Exploration also commented: “In addition to the exciting work ahead on
our flagship Hurricane project, the upcoming summer program is an important one for IsoEnergy as we
start to systematically test excellent targets within our pipeline of discovery opportunities. At Hawk we
have been able to integrate the results from our recent drilling with the magnetic, ZTEM and ground EM
data sets to generate some very compelling targets, within a highly prospective regional corridor, that has
clear potential to host a tier one uranium deposit. Additionally, reconnaissance drilling at our early-stage
Ranger project will provide valuable geolog ical information , and an extensive program of airborne
surveying will move several of our projects toward drill- readiness. Lastly, a review of the previous
exploration results at Kernaghan East has highlighted a yet untested target where we see a potential offset
to the unconformity surface spatially associated with alteration, anomalous uranium geochemistry and a
favourable pyrite-rich graphitic host all within 170 metres from surface. These key features combine to
highlight the potential for Kernaghan East to host a near surface uranium deposit.”
Summer Exploration Plans
Hurricane, Larocque East Project
A recent technical review of the Hurricane project has identified potential areas for resource expansion
along the n orthern and eastern extents to the know n mineralization (Figure 2). Additionally, IsoEnergy
plans to conduct an ANT survey directly over the Hurricane deposit with further survey extensions north,
south and east of the known uranium minerali zation, using EXOSPHERE BY FLEET® (Figure 2). ExoSphere
technology by Fleet Space consists of laying an array of 64 lightweight, battery-powered surface sensors
called Geodes over a 2 km² survey grid to measure naturally occurring environmental seismic vibrations
in the ground (caused by wave action, weather, and anthropogenic activities) over a six-day period. The
Geodes collect and deliver information in near real-time to Fleet Space’s satellite network. The subsurface
ANT results will be integrated with information that has been gathered through previous exploration
activities. With further processing and mode lling, it may be possible to highlight mineralized zones
associated with changes in seismic velocity . Success in correlating ANT responses with known uranium
mineralization will validate the use of this innovative technique in defining additiona l drill targets at
Hurricane and other projects. The summer drill program will comprise approximately 1,100 metres. The
main objective of this drilling will be to extend the resource footprint and assess the potential of the ANT
technology to highlight density contrasts associated with uranium mineralisation. Further information on
the ANT survey method and examples of case histories can be found at https://fleetspace.com/mineral-
exploration.
Kernaghan, Larocque East Project
On the Kernaghan trend, where historical drilling identified over 40 metres of unconformity topography
associated with anomalous geochemistry in the Athabasca sandstones , the summer drill program will
comprise two drill holes totalling 600 metres. The main objective of the drilling is to test a 40-metre-thick
pyrite-bearing graphitic unit at the unconformity . This target is proximal to hydrothermal clay and
hematite alteration that is spatially associated with elevated uranium geochemistry previously intersected
in exploration drilling. Figure 3 shows the general target areas for Larocque East drilling.
Hawk Project
IsoEnergy recently completed the inversion of historic ZTEM data along with additional ground EM
surveying over its Hawk property. The ZTEM inversion highlights the extent of the conductive trend within
the property and correlates well with the ground EM data that has been collected over the past two years,
as shown in Figure 4.
Drilling planned at Hawk comprises three drill holes totalling 2,500 metres. These drill holes will follow up
targets identified from the integration of significant sandstone alteration in recent drilling (IsoEnergy Ltd.
News Release April 21, 2023), ground EM, and the ZTEM inversion, where a highly prospective target area
has been highlighted. Figure 4 shows the relative location of the drill target areas and the interpreted
conductor traces hosted within the zone of low magnetic susceptibility. Th e primary objective of this
drilling is to test for uranium mineralisation hosted at the unconformity. To accurately characterise the
geochemical fingerprint of the altered rocks immediately above and below the unconformity , further
sampling of the existing drill holes HK23 -03 and HK23-05A will be conducted during the summer field
season. This additional data will aid vectoring exploration efforts towards higher grade uranium
mineralisation.
Ranger Project
As at Hawk, electromagnetic surveying completed at Ranger during winter 2022 advanced the project to
a drill-ready state. The winter survey work mapped weakly to moderately conductive trends in two areas.
The northwestern conductive trends are associated with magnetic breaks and are completely untested by
historic drilling within the project. The southern conductive trends are associated with a magnetic break
and the projection of the Bird Lake Fault, a significant post-Athabasca structure which has a vertical offset
of up to 80 metres. The depth to the unconformity in the survey area is expected to between 230 and 300
metres. Drilling planned at Ranger consists of four drill holes totalling 1,600 metres. Figure 4 shows the
relative location of the drill target areas and the interpreted conductor traces. The primary objective of
this drilling is to test for uranium mineralisation hosted at the unconformity.
Airborne Geophysical Surveying
Xcalibur Multiphysics has been engaged to conduct multiparameter airborne geophysical surveying at
IsoEnergy’s early-stage Trident, Full Moon and Collins Bay Extension projects. The survey will employ
Xcalibur’s FALCON® Airborne Gravity Gradiometry system to acquire high -resolution gravity, magnetic,
and radiometric (spectrometry) datasets. Gravity and magnetic dat a will improve the property -wide
understanding of basement geology and assist in the identification of potential alteration zones, while
gamma ray spectrometry aims to locate anomalous radioactivity related to near- surface showings and
radioactive boulder trains such as those that led to the discovery of several notable uranium deposits
including Triple R and Key Lake. Survey work is planned to commence in August and is expected to be
completed in September. Project locations are shown on Figure 1.
Geotech Ltd has been engaged to conduct a helicopter -borne Versatile Time Domain Electromagnetic
(VTEM™ Plus) and horizontal magnetic gradiometer geophysical survey at the East Rim project. The
proposed survey is approximately 1,125 line -kilometres (refer Figure 1). The VTEM ™ Plus system is
excellent for locating discrete conductive anomalies as well as mapping lateral and vertical variations in
resistivity. The results of this VTEM survey will be integrated with the magnetic and gravity surveys that
were conducted in 2022 to generate basement hosted targets for initial reconnaissance drill testing in the
winter 2024. Survey work is planned to commence in June and is expected last for 2 weeks. Importantly,
the sandstone cover on the p roperty is thin, rang ing between 140 metres and 450 metres in previous
drilling.
Figure 1 – IsoEnergy Athabasca Projects and the target areas for the summer airborne geophysical
programs
Figure 2 – Hurricane deposit, Larocque East highlighting the outline of the Ambient Noise Tomography
Survey Area against the backdrop of resistivity 100 metres above the unconformity.
Figure 3 – Kernaghan Trend, Larocque East Drilling Targets illustrating the coincident location of the
alteration zone, anomalous uranium and the contact of the granite with the pyrite-rich graphitic gneiss
Figure 4 – Hawk winter ground EM survey results and the results of the 3D inversion of the historic
ZTEM data from 100 metres below the unconformity with the proposed summer drill targets
Figure 5 – Ranger proposed drill hole locations and the conductor traces as defined from the 2022 EM
survey
Qualified Person Statement
The scientific and technical information contained in this news release was prepared by Darryl Clark ,
P.Geo., IsoEnergy’s Vice President, Exploration, who is a “Qualified Person” (as defined in NI 43 -101
– Standards of Disclosure for Mineral Projects ). Dr. Clark has verified the data disclosed. All radioactivity
measurements reported herein are total gamma from an RS-125 hand-held spectrometer. As mineralized
drill holes at the Hurricane zone are oriented very steeply (-70 to -90 degrees) into a zone of mineralization
that is interpreted to be horizontal, the true thickness of the intersections is expected to be greater than
or equal to 90% of the core lengths. This news release refers to properties other than those in which the
Company has an interest. Mineralization on those other properties is not necessarily indicative of
mineralization on the Company’s properties. All chemical analyses are completed for the Company by SRC
Geoanalytical Laboratories in Saskatoon, SK. For additional information regarding the Company’s
Larocque East Project, including its quality assurance and quality control procedures, please see the
Technical Report dated effective May 15, 2019, on the Company’s profile at www.sedar.com.