IsoEnergy Intersects Strong Pitchblende Uranium Mineralization in First Along‐Strike Step‐out at the Hurricane Zone
IsoEnergy Intersects Strong Pitchblende Uranium Mineralization in
First Along‐Strike Step‐out at the Hurricane Zone
Vancouver, BC, February 11, 2019 – IsoEnergy Ltd. (“IsoEnergy” or the “Company”) (TSXV: ISO; OTCQX: ISENF)
is pleased to announce that it has intersected an interval of s trong (>20,000 total cps on an RS‐125 hand‐held
spectrometer) uranium mineralization at the Hurricane zone in t he first follow‐up drill hole (LE19‐06)
completed along‐strike of last summer’s intersection in drill ho l e L E 1 8 ‐ 0 1 A . T h e H u r r i c a n e z o n e i s a n e w
discovery of high‐grade uranium mineralization on the Company’s 100% owned Larocque East property in the
eastern Athabasca Basin of northern Saskatchewan.
Drilling Highlights
The first along‐strike step‐out from the discovery section has intersected strong pitchblende
uranium mineralization in drill hole LE19‐06
Also, mineralization in drill hole LE19‐04 extends the width of the Hurricane zone on the discovery
section to at least 38 metres
The company is fully funded for the current drill program and subsequent follow‐up in 2019
Leigh Curyer, Chairman of the Board commented: “The founding of I S O t o f o c u s o n e x p l o r i n g a n d s e c u r i n g
properties in the eastern side of the Athabasca Basin has proven incredibly successful with Craig and his team
targeting and intersecting high grade mineralization. The exploration methodology and disciplines developed
in the NexGen / ISO group of which Craig has been a member sinc e the incorporation of NexGen, are proving
very effective in terms of targeting, intersecting and developi ng mineralization in a timely and cost‐effective
manner.”
Craig Parry, Chief Executive Officer commented: “The team has done a tremendous job in targeting and
successfully finding high‐grade mineralization at Hurricane. Based on my experience, I am very encouraged by
these results given the extent of mineralization in only 6 holes to date. The 38 metre width of the zone on the
discovery section is particularly impressive and initial radioa ctive intervals at Hurricane are certainly on par
with other discoveries in the basin. The mineralization remains open in both directions along‐strike and there
is great potential for more good results from the ongoing program.”
Drill Hole LE19‐06
Drill hole LE19‐06 was designed to evaluate the potential for expansion of the Hurricane zone on section 4585E,
along‐strike to the east of discovery drill hole LE18‐01A. The drill hole penetrated overburden and Athabasca
sandstone to 336.0 metres and then basement metasedimentary gneiss to the end of the hole at 443 metres.
Substantial uranium mineralization was intersected in the drill hole, 30 metres east of the mineralization in
drill hole LE18‐01A. The radioactive intervals (>1000 total cps on an RS‐125 hand‐held spectrometer) are
summarized in Table 1 and are shown on a cross section in Figur e 2. They include a 2.0‐metre‐long zone of
uranium mineralization perched in the sandstone and centered ab out seven metres above the unconformity,
and a 4.0‐metre‐long zone of stronger uranium mineralization that measures >5,000 cps (RS‐125) and lies
immediately above the sub‐Athabasca unconformity. Mineralization is visually similar to the drill holes on the
discovery section 4560E and includes fracture controlled, disseminated and replacement styles of pitchblende
with hematite and clay. Within the lower interval is a 2.0‐metre‐long subinterval of stronger radioactivity that
measures >10,000 cps on the RS‐125. Within the 2.0‐metre‐long subinterval is a 0.5‐metre‐long zone of dark
grey to black uranium mineralization that averages 28,000 cps (RS‐125). Basement rocks immediately beneath
the mineralization consist of bleached and clay‐rich graphitic cordierite augen gneiss with several major fault
zones.
Drill Holes LE19‐04 and LE19‐05
Drilled as an additional step‐out on the discovery section 4560E , 1 2 . 5 m e t r e s n o r t h o f p r e v i o u s l y d i s c l o s ed
follow‐up drill hole LE19‐02, drill hole LE19‐04 was designed to evaluate the potential for continued expansion
of the Hurricane zone to the north. The drill hole penetrated overburden and then Athabasca sandstone to
333.5 metres. Weak uranium mineralization was intersected in two narrow intervals at the unconformity that
are summarized in Table 1 and shown on Figure 3. These results demonstrate that mineralization at the
Hurricane zone has a minimum cross‐strike width of 38 metres, extending from drill hole LE19‐03 in the south
to LE19‐04 in the north.
Drill hole LE19‐05 intersected the sub‐Athabasca unconformity 2 5 metres to the north of drill hole LE19‐04,
also on the discovery section 4560E. Substantial alteration in the sandstone suggests that additional targets
are present north of this drill hole, however no significant mineralization was intersected.
Table 1 – Hurricane Zone Radioactive Intervals
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 in
Hole‐ID From (m) To (m) Length (m) Radioactivity 1,2 (CPS) Location
LE19‐023 316.5 320.0 3.5 >1,000 Discovery Section, 12.5 m north of LE18‐01A
and3 326.5 330.0 3.5 >1,000
incl.3 328.5 330.0 1.5 >20,000
incl.3 329.0 329.5 0.5 >50,000
LE19‐033 324.0 324.5 0.5 >1,000 Discovery Section, 12.5 m south of LE18‐01A
and3 326.5 329.5 3.0 >1,000
incl.3 328.5 329.5 1.0 >5,000
incl.3 329.0 329.5 0.5 >20,000
LE19‐04 329.0 329.5 0.5 >1,000 Discovery Section, 12.5 m north of LE 19‐02
333.0 333.5 0.5 >1,000
LE19‐05 No significantly elevated radioactivity Discovery Section , 25 m north of LE19‐04
LE19‐06 328.0 330.0 2.0 >1,000 30 m step‐out along‐strike east of LE 18‐01A
and 332.0 336.0 4.0 >5,000
incl. 333.5 335.5 2.0 >10,000
incl. 333.5 334.0 0.5 >20,000
Notes: 1. Radioactivity is total gamma from drill core measured with an RS‐125 hand‐held scintillometer.
2. Measurements of total gamma cps on drill core are an indication of uranium content, but may not correlate with uranium che mical assays.
3. Previously disclosed.
several occurrences to the southwest of the Larocque East prope rty. The closest of these are the Larocque
Lake and Larocque North zones, which are located 6.5 kilometres and 0.4 kilometres, respectively, to the
southwest of the western Larocque East property boundary. Drill i n g a t C a m e c o ’ s L a r o c q u e L a k e z o n e h a s
returned historical intersections of up to 29.9% U3O8 over 7.0 metres in drill hole Q22‐040. Drilling at the
Cameco’s Larocque North zone has returned intersections of up t o 2.05% U 3O8 over 0.6 metres in drill hole
Q22‐16. Like the nearby Geiger property, Larocque East is loca ted adjacent to the Wollaston‐Mudjatik
transition zone ‐ a major crustal suture related to most of the major uranium deposits in the eastern Athabasca
Basin. Importantly, the sandstone cover is thin, ranging between 140 metres and 330 metres in previous
drilling.
A total of 23 historical drill holes have been completed on the Property along approximately 22 kilometres of
graphitic conductors. Five of the historical holes have inters ected weak uranium mineralization on the
Larocque East property to date, including drill holes KER‐07 (0 .12% U3O8 over 0.1 metre) and KER‐11 (0.06%
U3O8 over 0.5 metre) near the western property boundary, within the general vicinity of the Hurricane zone.
Next Steps
Additional drilling will be completed on the 4585E cross‐sectio n to the north and south of drill hole LE19‐06.
This will be followed by along‐strike step‐outs to the west of the discovery section. Geochemical results from
the new drill holes reported herein are expected within six wee ks. Drill hole LE19‐06 is the fifth of a planned
10‐hole program. Following a $5.5M financing that closed in December, 2018, the company is fully funded for
the current drill program and subsequent follow‐up in 2019.
Figure 1 – Larocque East Property Location Map
Figure 2 – Cross‐Section 4585E
Figure 3 – Discovery Cross‐Section 4560E
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.
About IsoEnergy
IsoEnergy is a well‐funded uranium exploration and development c o m p a n y w i t h a p o r t f o l i o o f p r o s p e c t i v e
projects in the eastern Athabasca Basin in Saskatchewan, Canada and a historic inferred mineral resource
estimate at the Mountain Lake uranium deposit in Nunavut. IsoE nergy is led by a Board and Management
team with a track record of success in uranium exploration, dev elopment 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
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www.isoenergy.ca
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