IsoEnergy Drills 8.5m of 3.2% U3O8 in Drill Hole LE19‐12, Including 1.0m of 14.3% U3O8 at the Hurricane Zone
IsoEnergy Drills 8.5m of 3.2% U3O8 in Drill Hole LE19‐12, Including
1.0m of 14.3% U3O8 at the Hurricane Zone
Vancouver, BC, April 16, 2019 – IsoEnergy Ltd. (“IsoEnergy” or the “Company”) (TSXV: ISO; OTCQX: ISENF) is
pleased to announce assay results for the last drill holes from the winter 2019 drilling program. Drill hole LE19‐
12 was collared 75m to the west of the discovery section and intersected 8.5m of 3.2% U3O8, 2.1% Ni and 0.2%
Co, including 1.0m of 14.3% U3O8 and 1.1% Ni. The final drill hole of the program, LE19‐13, wa s collared 75m
east of the discovery section and intersected 2.5m of 0.6% U3O8, 0.2% Ni and 0.5% Co, including 0.5m of 1.6%
U3O8, 0.4% Ni and 1.1% Co.
Highlights
Drill hole LE19‐12 intersected 8.5m of 3.2% U3O8, 2.1% Ni and 0.2% Co
The mineralization at Hurricane remains open along strike and on each section drilled to date
The company is fully funded for an aggressive follow‐up drill campaign this summer
The Hurricane zone is a new discovery of shallow (330m below surface), high‐grade uranium mineralization on
the Company’s 100% owned Larocque East property (the “Property”) i n t h e e a s t e r n A t h a b a s c a B a s i n o f
northern Saskatchewan (Figure 1). The Company recently completed the first follow‐up drilling program after
the discovery intersection in July 2018. Eleven of the twelve drill holes in the follow‐up winter campaign
intersected significant uranium mineralization. Hurricane now measures 150m (long) x 38m (wide) x up to
8.5m thick. The zone is open on all five sections drilled to da t e a n d a l o n g s t r i k e i n b o t h d i r e c t i o n s . T h e
Company, having raised $5.5 million in December 2018, remains fully funded for a follow‐up drilling campaign
that is planned for the summer.
Craig Parry, Chief Executive Officer commented: “I am impressed by the continued growth of our Hurricane
discovery. The thicknesses and grades of these intercepts are consistent with other high‐grade deposits in the
eastern Athabasca Basin. It is worth noting that Hurricane is in an excellent location, at a relatively shallow
depth, not covered by any bodies of water and is within 40 km of the modern, high‐grade McClean Lake
uranium mill that currently has excess capacity. The team has done a tremendous job in making this discovery
and advancing the project and are now eagerly preparing for our summer drill program. Given our strike rate
to date – twelve of the thirteen holes we have drilled have hit mineralization – and the nature and extent of
the discovery, we are optimistic about being able to deliver more positive news flow in the coming months.”
Steve Blower, Vice President, Exploration commented: “These 50m step‐out intersections confirm the
substantial size of the Hurricane zone. We’re about to kick of f a program of ground DC‐Resistivity geophysics
that covers the Hurricane zone plus over five km of high‐potent ial strike length extending to the east. These
results will be used to help with targeting for a 14‐hole, 6,00 0m follow‐up drilling campaign in the immediate
Hurricane area planned for this summer and will also aid future exploration efforts further afield.”
LE19‐12
Vertical drill hole LE19‐12 was drilled on section 4485E, 75m west of the discovery section and 76m east of the
property boundary. The drill hole intersected an 8.5m interval o f f r a c t u r e c o n t r o l l e d , d i s s e m i n a t e d ,
replacement and breccia fill styles of pitchblende uranium mineralization that averages 3.2% U3O8, 2.1% Ni and
0.2% Co. This long interval includes a 1.0m section that avera ges 14.3% U3O8 and 1.1% Ni, plus another 0.5m
section that averages 12.8% U 3O8, 15.0% Ni and 0.4% Co. The results are summarized in Table 1. Figure 2
shows the location of the drill hole in plan‐view and Figure 3 shows the location relative to contoured grade X
thickness values. Figure 4 shows the location on a cross‐secti on. Note that the only other drill hole on this
section, LE19‐11, is located 28 metres to the north of LE19‐12 and is also mineralized. The mineralization can
be seen in the core photos of Figure 5.
LE19‐13
Collared on section 4635E, 75 metres east of the discovery section, drill hole LE19‐13 is the furthest hole drilled
to the east on the Hurricane zone. It intersected uranium mineralization 50 metres east of previously disclosed
drill hole LE19‐06 (Table 1). Extensive faulting in the basal sandstone suggests that the optimal location on this
section was overshot. The main intersection consists of 2.5m o f fracture controlled, disseminated and
replacement styles of pitchblende uranium mineralization that averages 0.6% U3O8. This includes a 0.5m
section that averages 1.6% U3O8, as summarized in Table 1. Figure 6 shows the location of the drill hole on a
cross‐section.
Next Steps
A 53 line‐km ground DC‐resistivity survey will begin shortly on the Larocque East property. The survey will
cover the Hurricane zone area and approximately 5.5km of highly prospective graphitic conductors that extend
t o t h e e a s t o f t h e z o n e . T h e r e s u l t s o f t h e s u r v e y w i l l b e u s ed to help target a planned follow‐up drilling
campaign in the immediate Hurricane zone area expected to begin in July, 2019.
Larocque East
Larocque East consists of 6 mineral claims totaling 3,200 hectares and was purchased in May, 2018. The
Property is owned 100% by IsoEnergy and is not encumbered by any royalties or other interests. Larocque East
is immediately adjacent to the north end of IsoEnergy’s Geiger p r o pe r t y a n d i s 3 5 k i l o m e t r e s n o r t h w e s t o f
Orano Canada’s McClean Lake uranium mine and mill.
The Property covers a 15‐kilometre‐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 occurrences on a neighbouring property to the southwest of Larocque East. The
c l o s e s t o f t h e s e t o L a r o c q u e E a s t a r e t h e L a r o c q u e L a k e a n d L a rocque North zones, which are located 6.5
kilometres and 0.4 kilometres, respectively, to the southwest of the western Larocque East property boundary.
Drilling at the Larocque Lake zone has returned historical intersections of up to 29.9% U3O8 over 7.0 metres in
drill hole Q22‐040. Drilling at the Larocque North zone has returned intersections of up to 2.05% U3O8 over 0.6
metres in drill hole Q22‐16. Like the nearby Geiger property, L a r o c q u e E a s t i s l o c a t e d a d j a c e n t t o t h e
Wollaston‐Mudjatik transition zone ‐ a major crustal suture rel ated to most of the major uranium deposits in
the eastern Athabasca Basin. Importantly, the sandstone cover on Larocque East is thin, ranging between 140
metres and 330 metres in previous drilling.
In addition to the Hurricane zone discovery, four historical dr ill holes have intersected weak uranium
mineralization at other locations on the Larocque East property to date, including drill hole KER‐07 (0.12% U3O8
over 0.1 metre), located 400 metres east of the discovery section.
Table 1 – Hurricane Zone 2019 Drilling Radioactive Intervals
Hole‐ID From (m) To (m) Length (m) Radioactivity 1,2 (CPS) Chemical Assays Location
U 3O8 (%) Ni (%) Co (%)
LE19‐023 316.5 320.0 3.5 >1,000 0.2 0.1 0.2 Section 4560E
and 326.5 330.0 3.5 >1,000 10.4 0.8 0.0
incl. 328.5 330.0 1.5 >20,000 23.6 1.6 0.0
incl. 329.0 329.5 0.5 >50,000 38.2 1.5 0.1
LE19‐033 324.0 324.5 0.5 >1,000 0.2 0.1 0.0 Section 4560E
and 326.5 329.5 3.0 >1,000 2.7 2.3 0.0
incl. 328.5 329.5 1.0 >5,000 7.6 6.6 0.1
incl. 329.0 329.5 0.5 >20,000 13.3 11.8 0.1
LE19‐043 329.0 329.5 0.5 >1,000 0.1 0.0 0.0 Section 4560E
333.0 333.5 0.5 >1,000 0.4 0.2 0.0
LE19‐053 No significantly elevated radi oactivity Section 4560E
LE19‐063 328.0 330.0 2.0 >1,000 0.4 0.1 0.1 Section 4585E
and 332.0 336.0 4.0 >5,000 3.8 1.1 0.0
incl. 333.5 335.5 2.0 >10,000 5.5 0.7 0.0
incl. 333.5 334.0 0.5 >20,000 13.7 1.2 0.0
LE19‐073 325.0 331.0 6.0 >1,000 0.4 0.8 1.4 Section 4585E
incl. 328.0 328.5 0.5 >5,000 1.0 4.9 9.3
LE19‐083 326.5 327.0 0.5 >1,000 0.4 0.1 0.1 Section 4535E
and 333.0 336.5 3.5 >1,000 0.8 1.5 0.4
incl. 335.5 336.0 0.5 >10,000 3.7 8.3 1.3
LE19‐093 325.0 329.5 4.5 >1,000 4.2 1.1 0.8 Section 4535E
incl. 327.0 329.0 2.0 >20,000 6.8 1.9 1.3
LE19‐103 331.5 333.0 1.5 >1,000 0.6 1.7 1.9 Section 4535E
LE19‐113 333.0 333.5 0.5 >5,000 2.1 0.1 0.1 Section 4485E
LE19‐124 320.5 329.0 8.5 >1,000 3.2 2.1 0.2 Section 4485E
incl. 326.0 327.0 1.0 >20,000 14.3 1.1 0.0
and incl. 328.5 329.0 0.5 >20,000 12.8 15.0 0.4
LE19‐134 320.0 320.5 0.5 >1,000 0.2 0.0 0.0 Section 4635E
and 321.5 324.0 2.5 >1,000 0.6 0.2 0.5
incl. 322.5 323.0 0.5 >10,000 1.6 0.4 1.1
Notes: 1. Radioactivity is to tal gamma from drill core measured with an RS‐125 hand‐held spectrometer.
2. Measurements of total gamma cps on drill core are an indication of uranium content, but may not correlate with chemical assays.
3. Radioactivity and chemical assays previously disclosed.
4. Radioactivity previously disclosed.
Figure 1 – Larocque East Property Location Map
Figure 2 –Hurricane Zone Planview
Figure 3 –Hurricane Zone Contoured Grade X Thickness
Figure 4 – Cross‐Section 4485E (Showing Drill Hole LE19‐12)
Figure 5 – Core Photos of Mineralization in Drill Hole LE19‐12