IsoEnergy Intersects 7.1% U3O8 Over 5.5m, Including 24.0% U3O8 Over 1.5m in First Drill Hole at Hurricane
IsoEnergy Intersects 7.1% U3O8 Over 5.5m, Including 24.0% U3O8 Over
1.5m in First Drill Hole at Hurricane
Vancouver, BC, February 19, 2020 – IsoEnergy Ltd. (“ IsoEnergy” or the “ Company”) (TSXV: ISO; OTCQX: ISENF ) is
pleased to report assays from the first drill hole of the winte r program at the Hurricane zone. Discovered in 2018,
Hurricane is a zone of high‐grade uranium mineralization on the Company’s 100% owned Larocque East property
(the “Property”) in the Eastern Athabasca Basin of Saskatchewan (Figure 1).
Highlights:
Drill hole LE20‐30 intersected 7.1% U3O8, 0.9% Ni and 0.3% Co over 5.5m (329.5 to 335.0m)
A higher‐grade subinterval averages 24.0% U3O8, 2.7% Ni and 0.5% over 1.5m (332.0 to 333.5m)
Drill holes LE20‐36 and LE20‐38 intersected strong uranium mineralization in the western extension area
Assay results from very strongly mineralized drill holes LE20‐32A and LE20‐34 are still pending
Current 8,500m drill program is fully funded
Steve Blower, Vice President of Exploration commented: “Systematic drilling at the west end of the Hurricane zone
continues to deliver strong intersections, extending high‐grade mineralization west of the 2019 footprint.
Additionally, wide spaced drilling along 800m of strike length well to the east of Hurricane continues to intersect
geology and structure that is fa vorable for uranium mineralization. The assay results from LE20‐30 are the best to
date at Hurricane. However, the thickness of mineralization an d level of radioactivity in drill holes LE20‐32A and
LE20‐34 (reported previously) suggests the result in LE20‐30 wi ll be surpassed shortly when assays from these drill
holes are received.”
Drill Hole LE20‐30 (Drill 1)
Chemical assays for drill hole L E20‐30 confirm the intersection of 5.5m of strong radioactivity reported previously
(see news release dated February 4, 2020). The interval averag es 7.1% U3O8, 0.9% Ni and 0.3% Co from 329.5m to
335.0m and includes a 1.5m subinterval that averages 24.0% U 3O8, 2.7% Ni and 0.5% Co from 332.0‐333.5m. The
mineralization is situated immedi ately above the sub‐Athabasca unconformity, which was intersected at 334.8m.
Table 1 summarizes the intersections to date in 2020. Figure 2 shows the drill hole locations at the west end of the
Hurricane zone in plan view. Figure 3 shows the results of LE20‐30 in cross‐section view.
Drill Holes LE20‐36 and LE20‐38 (Drill 1)
Following up on the results in drill hole LE20‐30, LE20‐36 and LE20‐38 were completed on the same section, 14m
north and 14m south of LE20‐30, respectively. Both of the dril l holes intersected strong radioactivity at the sub‐
Athabasca unconformity. Drill hole LE20‐36 intersected 1.0m of mineralization from 332.5 to 333.5m, including 0.5m
>20,000CPS (total gamma measured with an RS‐125 spectrometer (RS‐125)). Drill hole LE20‐38 intersected 7.5m of
mineralization from 319.5 to 327.0m, including two 0.5m subinte rvals >20,000CPS (RS‐125). Additional details are
provided in Table 1. See Figures 2 and 3 for a plan and section view, respectively.
Drill Holes LE20‐35, LE20‐37 and LE20‐39 (Drill 2)
These three drill holes are evaluating the potential for additional uranium mineralization w e l l t o t h e e a s t o f t h e
current Hurricane zone footprint. Spread over 800m of strike length, the holes have successfully intersected
favourable Hurricane‐style geology and structure deep in the bas e m e n t b e l o w t h e u n c o n f o r m i t y, c o n f i r m i n g t h e
potential for additional uranium mineralization over the entire length of the area tested to date. Subsequent drilling
in this program will test these structures at the sub‐Athabasca unconformity.
The Larocque East Property and the Hurricane Zone
The 100% owned Larocque East property consists of 20 mineral claims totaling 8,371 ha and is not encumbered by
any royalties or other interests. Larocque East is immediately a d j a c e n t t o t h e n o r t h e n d o f I s o E n e r g y ’ s G e i g e r
property and is 35 km northwest of Orano Canada’s McClean Lake uranium mine and mill.
Along with other target areas, the Property covers a 15‐kilomet re‐long northeast extension of the Larocque Lake
conductor system; a trend of graphitic metasedimentary basement rocks that is associated with significant uranium
mineralization at the Hurricane zone, and in several occurrence s on Cameco Corp.’s neighbouring property to the
southwest of Larocque East. The Hurricane zone was discovered in July, 2018 and was followed up with a 12‐hole
drilling campaign in the winter of 2019 and a recently complete d 17‐hole summer 2019 drilling campaign.
Dimensions are currently 550m along‐strike, 40m wide and up to 10m thick. The zone is open for expansion along‐
strike and on most sections. Mineralization is polymetallic and commonly straddles the sub‐Athabasca unconformity
320 m below surface. The best assayed intersection to date is 7.1% U3O8 over 5.5m in drill hole LE20‐30, as reported
herein. Drilling at Cameco Corp.’s Larocque Lake zone on the neighbouring property to the southwest has returned
historical intersections of up to 29.9% U3O8 over 7.0 m in drill hole Q22‐040. Like the nearby Geiger property,
Larocque East is located adjacent to the Wollaston‐Mudjatik transition zone ‐ a major crustal suture related to most
of the uranium deposits in the eastern Athabasca Basin. Import antly, the sandstone cover on the Property is thin,
ranging between 140 m and 330 m in previous drilling. In addit ion to the Hurricane zone d iscovery, four historical
drill holes have intersected weak uranium mineralization at other locations on the Property to date.
Table 1 – 2020 Larocque East Drilling Results
Hole‐ID From (m) To (m) Length (m) Orientation Radioactivity 1,2 Chemical Assays Location
(Azm/Dip) (CPS) U 3O8 (%) Ni (%) Co (%)
LE20‐303 329.5 335.0 5.5 180/‐80 >500 7.1 0.9 0.3 Section 4460E
incl. 331.0 331.5 0.5 >10,000 3.4 0.1 0.1
and 332.0 333.5 1.5 >20,000 24.0 2.7 0.5
LE20‐31 No significant mineralization 180/‐60 Section 5185E
LE20‐32A3 329.5 338.0 8.5 180/‐80 >500 Pending Section 4510E
incl. 334.5 337.0 2.5 >20,000
incl. 335.0 336.5 1.5 Off‐scale 4
LE20‐33 No significant mineralization 000/‐90 Section 5 185E
LE20‐343 326.0 334.5 8.5 180/‐80 >500 Pending Section 4435E
incl. 328.0 333.0 5.0 >20,000
incl. 329.5 331.5 2.0 Off‐scale 4
LE20‐35 No significant mineralization 180/‐80 Section 5 185E
LE20‐36 332.5 333.5 1.0 180/‐80 >500 Pending Section 4460E
incl. 332.5 333.0 0.5 >20,000
LE20‐37 No significant mineralization 165/‐60 Section 1 9‐1000E
LE20‐38 319.5 327.0 7.5 000/‐90 >500 Pending Section 4460E
incl. 325.0 325.5 0.5 >20,000
and incl. 326.0 326.5 0.5 >20,000
Notes: 1. Radioactivity is total gamma from drill core measur ed with an RS‐125 hand‐held spectrometer
2. Measurements of total gamma on drill core are an indication of uranium content, but may not correlate with chemical assays
3. Radioactivity previously disclosed
4. Off‐scale radioactivity is defined as exceeding 65,536 cps, the maximum measurable by an RS‐125 spectrometer
Figure 1 – Larocque East Property Map
Figure 2 – Western Hurricane Zone Drill Hole Location Map
Figure 3 – Vertical Cross‐Section 4460E (Looking East)
Qualified Person Statement
The scientific and technical information contained in this news release was prepared by Andy Carmichael, P.Geo.,
IsoEnergy’s Senior Geologist, who is a “Qualified Person” (as defined in NI 43‐101 – Standards of Disclosure for
Mineral Projects). Mr. Carmichael has verified the data disclosed. All radioa ctivity 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 (‐80 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 assays 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.
About IsoEnergy
IsoEnergy is a well‐funded uranium exploration and development company with a portfolio of prospective projects
in the eastern Athabasca Basin in Saskatchewan, Canada and a hi storical inferred mineral resource estimate at the
Mountain Lake uranium deposit in Nunavut. IsoEnergy is led by a Board and Management team with a track record
of success in uranium exploration, development and operations. The Company was founded and is supported by
the team at its major shareholder, NexGen Energy Ltd.
Craig Parry
Chief Executive Officer
IsoEnergy Ltd.
+1 778 379 3211
www.isoenergy.ca
Investor Relations
Kin Communications
+1 604 684 6730
www.isoenergy.ca
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