IsoEnergy Targets Eastern Strike Extension of Hurricane Uranium Zone
IsoEnergy Targets Eastern Strike Extension of Hurricane Uranium Zone
Vancouver, BC, May 29, 2019 – IsoEnergy Ltd. (“ IsoEnergy” or the “Company”) (TSXV: ISO; OTCQX: ISENF) is
pleased to announce its targeting strategy for the upcoming Sum mer 2019 Hurricane Extension drilling
program on its 100% owned Larocque East property (the “Property”). The primary objective of the drilling will
be to evaluate the potential for expansion of the Hurricane zon e east of the current drilling pattern. Targets
have been generated from integrated interpretations of geology, t r a c e e l e m e n t g e o c h e m i s t r y , a l t e r a t i o n
patterns and preliminary results from a 53 line‐km program of D C‐Resistivity (DC‐Res) geophysical surveying
that is still underway. The Hurricane zone is a new discovery of high‐grade uranium mineralization located in
the prolific eastern Athabasca basin, Saskatchewan.
Based on the Company’s recently completed winter drilling progr am, the Hurricane zone is a body of shallow
(330m below surface), high‐grade uranium mineralization located o n t h e w e s t s i d e o f t h e L a r o c q u e E a s t
property (Figure 1). Eleven of 12 drill holes in the winter ca mpaign intersected significant uranium
mineralization. Hurricane now measures 150m (long) x 38m (wide ) and is up to 8.5m thick. The zone is open
on all five sections drilled to date and along‐strike in both directions. The Company, having raised $5.5 million
in December 2018, remains fully funded for a follow‐up drilling campaign that is expected to begin in late June.
Steve Blower, Vice President, Exploration commented: “Compilati on of our drilling data and integration with
results from our geophysical surveying program has given us a c lear path forward for our rapidly approaching
summer drilling program. Increasing sandstone alteration to th e east combined with robust trace element
geochemistry in the easternmost drill hole confirms the highly prospective nature of the eastern strike
extension of Hurricane. Further, our new geophysical survey results support the premise that historical
mineralized drill hole KER‐07, located 345m to the east, was drilled 100m south of the target horizon.”
Craig Parry, Chief Executive Officer commented: “I’m excited about the potential for expansion of the Hurricane
zone along‐strike to the east of our current drilling pattern. With the planned resumption of drilling in late
June, upcoming releases of Hurricane drill results should coinc ide with improving uranium market conditions
expected in the near term.”
Summer Drilling Targeting Strategy
Five main features, as described below, suggest a strong probability that the Hurricane mineralization extends
east of the easternmost drill hole at Hurricane, LE19‐13.
Mineralization is Open
Drill hole LE19‐13 intersected substantial uranium mineralizati on (0.6% U3O8 over 2.5m) but was likely drilled
south of the optimal location on the trend, based on oriented c ore measurements and ISO’s interpretation of
the basement geology.
Trace Element Geochemistry
Strong sandstone uranium and uranium pathfinder geochemistry is present on the easternmost section.
Figures 2 and 3 compare sandstone uranium geochemistry on the discovery section with the easternmost
section drilled. Anomalous uranium values (>1ppm U) extend to the top of the sandstone on both sections.
Sandstone Alteration
The volume and tenor of sandstone bleaching increases toward th e east. Moderate and intense sandstone
bleaching polygons are shown on Figures 2 and 3 and they demonstrate that the sandstone bleaching is
becoming stronger and more voluminous to the east. Strong bleaching on the discovery section extends 65m
above the unconformity and it extends 25% higher (81m) on the easternmost section.
Sandstone Clay Mineralogy
Clays in the sandstone above the Hurricane zone are dominantly illitic, a feature commonly associated with
large uranium deposits in the Athabasca basin. Historical mineralized drill hole KER‐07, 345m east of the
Hurricane zone, also intersected sandstone with strongly illitic clays throughout much of the column.
New Geophysical Results
New geophysical results from the Company’s ongoing DC‐Resistivi ty survey confirm that KER‐07 was drilled
south of the target basement horizon. Figure 4 shows preliminary results of the survey over the eastern strike
extension area. Historical drill hole KER‐07 was drilled on the southern margin of the relatively wide conductive
package, approximately 70m south of the relative position of the Hurricane zone, which is located in the center
of the conductive package.
Drilling Plans
Sixteen drill holes totalling 6,700m are planned for the upcomi ng summer drilling season at Larocque East.
Based on the features described above, 13 of the 16 drill holes will target the eastern strike extension of the
zone in the area marked on Figure 5. They will be drilled as a series of two to three hole fences spaced 100‐
200 metres apart and will evaluate a total additional strike le ngth of 900 metres. The remaining three drill
holes will evaluate the potential for thicker and higher‐grade zones within the current drilling pattern as
marked on Figure 6. Drilling is expected to resume at Hurricane in late June
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 Cameco Corp.’s Larocque Lake zone has returned hist orical intersections of up to 29.9% U 3O8 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, Larocque East is located adjacent
t o t h e W o l l a s t o n ‐ M u d j a t i k t r a n s i t i o n z o n e ‐ a m a j o r c r u s t a l s u ture related to most of the major uranium
deposits in the eastern Athabasca Basin. Importantly, the sand stone 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.
Figure 1 – Larocque East Property Location Map
Figure 2 – Sandstone Uranium Geochemistry and Alteration on section 4560E (the Discovery Section)
Figure 3 – Sandstone Uranium Geochemistry and Alteration on section 4635E (the Easternmost Section)
Figure 4 – Preliminary DC‐Resistivity Results (100mASL Planview)
Figure 5 – Planned Drilling Area for the Summer 2019 Eastern Extension Drillholes
Figure 6 – Planned Drill Holes Within the Current Hurricane Zone Footprint
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 perso n” (as defined in National Instrument 43‐101 –
Standards of Disclosure for Mineral Projects). Mr. Carmichael has verified the data disclosed. This news release
refers to properties other than those in which the Company has an interes t. Min eralizatio n o n tho s e o ther
properties is not necessarily indicative of mineralization on t he Company’s properties. An RS‐125 hand‐held
spectrometer was used to verify that the radioactivity is due to uranium. As the drill holes reported herein are
vertical or near‐vertical, and the mineralization is interprete d to be horizontal, the true thickness is expected
to be within 90% of the cored intervals.