GoldON Outlines Lithium Pegmatite Discovery Potential at its McInnes Lake Greenstone Belt Property Elevated lithium values of up to 1,126 ppm in metavolcanic host-rocks distributed proximal to the main plutons triggered comprehensive review
FOR IMMEDIATE RELEASE
GoldON Outlines Lithium Pegmatite Discovery Potential at
its McInnes Lake Greenstone Belt Property
Elevated lithium values of up to 1,126 ppm in metavolcanic host-rocks distributed
proximal to the main plutons triggered comprehensive review
VICTORIA, BC – April 24, 2023 – GoldON Resources Ltd. (TSX-V: GLD) (“GoldON” or the
“Company”) is pleased to provide an overview of th e fertile peraluminous granite plutons and
lithium pegmatite potential at its 100%-owned McI nnes Lake property (the “Property”) that is
located approximately 50 kilometres (km) southwest of Frontier Lithium’s Pakeagama Lake area
lithium deposits and covers the majority of the McInnes Lake greenstone belt in northwestern
Ontario.
Highlights:
Fertile lithochemical signature recognized in McInnes North pegmatitic granite pluton
from GoldON’s latest fieldwork on the 11,424-hectare Property.
Anomalous bulk rock lithium (Li), beryllium (Be), rubidium (Rb), cesium (Cs), tantalum
(Ta), and niobium (Nb) in McInnes Lake pluton compare with fertile, peraluminous
granite plutons elsewhere in Ontario such as the Allison Lake batholith and the MNW
stock in Georgia Lake region.
Analytical results from the latest fieldwork included a database of 480 bulk rock samples
with 67 exceeding 50 parts per million (ppm) lithium.
Elevated lithium values newly discovered ranging from 50 to 1,126 ppm in metavolcanic
host-rocks distributed proximal to the main plutons in the McInnes Lake greenstone belt
may reflect exomorphic dispersion outwards from exposed and blind pegmatitic granite
plutonic centres.
Peraluminous granitic magma generation and emplacement are possibly controlled by the
inferred northern continuation of a 100 -750 metres (m) wide, deep seismic tapping,
E1/E2 extensional shear zones and associated second order shears, which also underlie the
Red Lake Mine Complex and greenstone slivers to the north (Red Lake Extension)
Major fault zone control of peraluminous granite plutons and derivative lithium-rich
pegmatites is evident elsewhere in northwestern Ontario, including 50 km to northeast of
the McInnes North pluton, along the Bearhead fault system at Pakeagama Lake, where
Frontier Lithium14 has delineated NI 43-101 Measured & Indicated (M&I) resources of 26
million tonnes (mt) of 1.62% Li2O and Inferred resources of 32.4 mt of 1.41% Li2O.
Figure 1. Granitic pegmatite sample from >70 m wide pegmatite zone on the east show of McInnes Lake.
“GoldON’s fieldwork has discovered several new showings that confirm the presence of a fertile
peraluminous granite setti ng. Geological similarities include the E1 fault that is inferred to pass
right through the pluton area an d may have been a controlling st ructure for the emplacement of
fertile granites and related lithium-rich pegmatite melts. This is a similar setting to the Pakeagama
Lake peraluminous parent granite and derived LCT-petrogenetic family pegmatites located 50 km
to the northeast,” said GoldON’s Technical Advisor, Frederick Breaks, PhD, P.Geo. “The McInnes
Lake project checks all the boxes, and I have recommended a follow -up fieldwork program to be
conducted as soon as possible.”
Recognition of fertile peraluminous granites is o bviously one important aspect of exploration for
potential derivative rare-element pegmatite deposits of the lithium-cesium-tantalum (LCT)
petrogenetic family1. These plutons are widespread in the Superior Province of northern Ontario2
and especially in high to gran ulite metamorphic grade, migmatized, clastic-metasedimentary-
dominant belts, such as the English River and Quetico terranes, where 5,000 sq. km of
peraluminous granite was delineated in the form er by regional mapping programs of the Ontario
Geological Survey3.
This news release documents a fertile granite, th e McInnes North pluton (MNP), situated in the
McInnes Lake greenstone belt (MLGB) of the North Caribou La ke terrane of northwestern
Ontario4, based upon the compilation of existing published lithochemistry data (480 bulk rock
samples) and petrographic attributes stemming from an extensive review of the literature.
Fertile Peraluminous Granite Plutons
The degree of chemical evolution varies significantly in the peraluminous granite suite of S-type
affiliation, and consanguineous pegmatites with rare-element mineral potential are largely
restricted to terrane boundary zones with lower-g rade greenstone belt-rich domains such as the
western Uchi terrane and associated with major deep crustal fault systems such as the Sydney Lake-
Lake St. Joseph fault5.
Examples of fertile granite plutons in this setting are found at the Allison Lake batholith 5 and
Separation Rapids pluton7, areas of extensive mineral exploration for lithium mineralization.
A second setting involves peraluminous granite plutons entirely enclosed within greenstone belts,
such as the 0.5 sq. km, unnamed pluton of tourmaline-garnet-muscovite pegmatitic granite situated
just east of the Musselwhite mine 6, a plausible source of spodumene pegmatite dykes found in
underground workings8, and at the McInnes North and Lower Bay plutons.
The size of fertile pegmatitic granite plutons varies considerably from large batholiths such as the
30 by >100 km Glacier Lake batholith 9 to the 1.5 by 2.8 km Separa tion Rapids pluton, the latter
being the most evolved fertile granite known in Ontario7. The McInnes North pluton occurs in the
northern part of the Property and, at a minimum size of 1.5 by 1.9 km, is similar in size to the
2,646±2 Ma Separation Rapids pluton. A second, smaller, 0.4 km diameter body, called the Lower
Bay pluton, occurs in the southern part of the Property.
Figure 2. Regional map with location of McInnes Lake and GoldON’s other properties.
Geological Setting
The MLGB is one of several supracrustal slivers that reside in the core of the predominantly
Mesoarchean North Caribou Lake terrane4. Cycle 2 intermediate volcanism in the greenstone belt
has an age spread of 2,975.4±0.8 Ma to 2,928.7±0.6 Ma 13. The peraluminous granite plutonism is
undated and plausibly developed late in the history of the terrane.
From seismic studies in the Red Lake area10,11,12, it is inferred that the MLGB lies along the northern
continuation of the deep crustal E1/E2 extensional shear zone, which also underlies the Red Lake
Mine Complex and greenstone slivers to the south of MLGB, called the Red Lake Extension. The
Central sliver13 50 km south of the MLGB, is a shear zone approximately 100 -750 m wide and is
coincident with a prominent first vertical derivative magnetic low that has numerous second-order
shears.
Deep crustal level fault zones may have impor tantly acted as pera luminous granitic magma
generation sites and conduits for emplacement along the length of the greenstone belt as suggested
by the appearance of pegmatite bodies of various sizes distributed in the MLGB over a strike length
of at least 30 km.
The Sydney Lake fault, south of Red Lake, demonstrates that significant volumes of peraluminous
granitic magma can be generated within major d eep crustal fault structures, as exemplified by a
conspicuous, linear-shaped, garnet-cordierite-muscovite granite mass, 0.3 to 2 km in breadth and
a minimum 130 km in strike length, entirely confined within this major fault system3.
Major fault zone control of peraluminous gran ite plutons and derivative 2,672 Ma lithium-rich
pegmatites is evident elsewhere, as 50 km to northeast of th e McInnes North pluton, along the
Bearhead fault system at Pakeag ama Lake, where Frontier Lithium 14 has delineated NI 43-101
resources of 26 mt (M&I) of 1.62% Li2O and 32.4 mt (Inferred) 1.41% Li2O.
McInnes North Pluton
The McInnes North pluton (MNP) was previously briefly described in several Ontario Geological
Survey mapping studies13,15,16. Rock types comprise massive, undeformed, medium-grained, two-
mica granite and associated pegmatitic granite units such as potassic pegmatite 15. Graphic K-
feldspar megacrysts are also present suggestive of pegmat itic leucogranite phases. Mineralogy
comprises deep pink, blocky K-feldspar, plagiocl ase, quartz, accessory muscovite, tourmaline,
garnet, and biotite13.
The MNP has an apparent exocontact pegmatite sw arm that extends for at least 1 km to the
southeast18 into mafic and intermediate metavolcanic host rocks. Dykes of similar rock also occur
up to 6 km north of the pluton 18. The Lower Bay pluton, 20 km south, lacks bulk rock chemistry
data but appears similar to the MNP, in descriptions of the previous work 15,16,17. Peraluminous
granitic pegmatite dykes also are evident and occur through the MLGB13,15,19.
Lithochemistry
Published lithochemistry data for the MLGB, with Li, Be, Rb, Cs, Ta, and Nb, comprise 142 bulk
rock analyses from the 2006 Far North Initiative Ontario Geological Survey mapping project13 and
338 analyses in a 2021 belt-wide mineralization-geochemical investigation19.
Six bulk rock analyses from the McInnes Nort h pluton were compiled from these sources and
summarized in Table 1 with a comparison to various fertile granite plutons in other parts of Ontario
previously investigated2,5,7. Key attributes of fertile granites a nd their internal pegmatitic granite
phases were initially documented and classified in the Cat Lake-Winnipeg River pegmatite field of
southeast Manitoba20.
Table 1. Summary of Rare-Element Bulk Rock Data for McInnes North Pluton
Compared to Other Fertile Peraluminous Granite Complexes in Ontario.
nS o u r c e
Mean Range Mean Range Mean Range Mean Range Mean Range Mean Range
McInnes North pluton 65 49 ‐ 99 384 218 ‐ 526 8.6 7.0 ‐ 10.0 16.8 9.7 ‐ 24.7 2.6 2.12 ‐ 3.25 141 125 ‐ 173 6 1,2
Allison Lake batholith 80 18 ‐ 190 226 117 ‐ 587 17.4 2.7 ‐ 90 10.1 2.7 ‐ 58.7 1.2 0.61 ‐ 12.9 176 49 ‐ 323 19 3
MNW stock 107 45 ‐ 179 390 314 ‐ 660 35.5 12.7 ‐ 36.3 25.1 16.7 ‐ 82 9 2.05 ‐ 66 118 81 ‐ 165 10 4
Barbara Lake stock 108 30 ‐ 415 333 68 ‐ 601 25.6 3.9 ‐ 62.4 23.8 6.9 ‐ 92.1 10.6 1.4 ‐ 91.1 106 51 ‐ 260 17 4
Separation Rapids pluton 160 53 ‐ 235 921 726 ‐ 984 30.0 11.8 ‐ 58 73 41 ‐ 94 22.1 9.2 ‐ 28.7 21 0.6 ‐ 42 5 5
n= number of samples
3. Tindle, A.G., Selway, J.B. and Breaks, F.W. 2002. Ontario Geological Survey, MRD 111.
5. Breaks , F.W. and Tindle , A.G. (2001 ). p.172‐173 in CIMM Speci al Vol ume 53. Industrial Minerals in Canada.
K/Rb
1. MacL achlan, B. and Robertson, C. 2022. GoldON Resources Ltd. Report on the May to June and Sept 2021 Expl orati on Programs on the McInnes La ke property. As s es s ment
Work Report, Ontario MNDM: Grab sam ple s 277167 ‐277171.
2. Buse, S. and Prefontaine, S. 2006. Open File Report 6210, Appendix 2, Sample 06‐SP‐1104.
4. Tindle, A.G., Breaks, F.W., and Selway, J.B. 2008. Ontario Geological Survey, MRD 231.
Lithium (ppm) Rubidium (ppm) Cesium (ppm) Niobium (ppm) Tantalum (ppm)
Figure 3. Lithium vs Rubidium (log10) in the McInnes North pluton compared with other fertile granite plutons
in the northwestern Superior Province of Ontario.
Figure 3 depicts Rb vs Li variation in MNP comp ared with other fertile granite plutons in the
region. The MNP plots mid-way betw een the variation fields of the Allison Lake batholith and
Separation Rapids pluton and define a trend of increasing fertile granite evolution. The MNP has
elevated lithium (mean 65 ppm; range 53-99 ppm) , and Rb values (mean 384 ppm; range 218 to
526 ppm) mostly exceed the Allison Lake bath olith (Rb mean 226 ppm; range 117 to 587 ppm),
albeit with a small overlap in the data fields (Figure 3). Mean Ta and Nb are higher in the MNP
versus Allison Lake batholith with lower mean Cs (8.6 vs 15.6 ppm), but the Cs ranges mutually
overlap. The Allison batholith, delineated in 20015, contains several rare-element mineral showings
including recently discovered spodumene by Green Technology Metals14.
Lithium Dispersion Halos
Numerous localities along the MLGB trend rev eal anomalous lithium values in mafic and
intermediate metavolcanic rocks 13,19 in the range 55 ppm to 1,126 ppm, relative to the Upper
Continental Crust mean lithium abundance of 20 ppm 22, that may signify e xomorphic dispersion
outward from fertile pegmatitic granite bodies.
The highest lithium values of 304, 340, and 1,126 ppm 19 are situated within 0.8 to 1 km of the
McInnes North pluton, and occur in a fragmental, angular, possible debris flow/conglomerate rock
of float origin that may represent disrupted parts of a nearby lithium dispersion halo. Other lithium
anomalies, in the 68 to 376 ppm range, were documented in metavolcanic and banded iron
formation bedrock within 6 km of the MNP 19 and such anomalies require further field definition
as does a lithium value of 180 ppm in metagabbro situated about 10 km southeast of the MNP23.
Follow-up field investigation focused on lithium mineralization in known peraluminous plutons
and related exocontact dykes is planned in the forthcoming field to further unravel the potential for
LTC-class pegmatites. The source of the numerous lithium anomalies, which may have developed
via dispersion from lithium-rich pegmatites hosted in the metavolcanic and banded iron formation
bedrock, is presently unclear and will also require further field investigation.
“We originally staked the underexplored McInnes Lake property for its deep crustal-scale features
and similarities to the Red Lake Camp and have been successful in discovering several new gold
showings. However, the discovery of elevated lithium values that compare with other fertile,
peraluminous granite plutons in Ontario is a pleasa nt surprise,” said Mike Romanik, president of
GoldON. “Lithium and rare earth ex ploration is a specialized field, and we are very fortunate to
have Dr. Breaks coordinating our exploration strategy.”
The technical information presented in this ne ws release has been reviewed and approved by
Frederick W. Breaks, PhD, P. Geo, a qualified person for exploration, as defined by National
Instrument 43-101, Standards of Disclosure for Mineral Projects.
About GoldON Resources Ltd.
GoldON is an exploration compan y focused on discovery-stage prop erties located in the prolific
greenstone belts of northwestern Ontario, Canada . Our current project portfolio includes six
properties in the Red Lake Mining Distri ct (McDonough, McInnes Lake, Pakwash North,
Pipestone Bay, Springpole East, and West Madsen) and a seventh property in the Patricia Mining
District (Slate Falls).
For more information, you can visit our website at goldonresources.com, download our investor
presentation by clicking here, and follow us on Twitter at https://twitter.com/GoldONResources.
ON BEHALF OF THE BOARD
Signed “Michael Romanik”
Michael Romanik, President
GoldON Resources Ltd.
Direct line: (204) 724-0613
Email: [email protected]
179 - 2945 Jacklin Road, Suite 416
Victoria, BC, V9B 6J9
Forward-Looking Statements:
This news release may contain “forward-looking st atements” that involve k nown and unknown risks,
uncertainties, assumptions, and other factors that may cause the actual results, performance, or achievements of
the Company to be materially different from any future results, performance or achievements expressed or
implied by the forward-looking statements. Any forward-lo oking statement speaks only as of the date of this
news release and, except as may be required by applicable securities laws, the Company disclaims any intent or
obligation to update any forward-looking statement, whether as a result of new information, future events, or
results or otherwise.
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the
policies of the TSX Venture Exchange) accept responsibility for the adequacy or accuracy of this release.
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https://www.frontierlithium.com/_files/ugd/dec7de_844a5e2cc2234a1babbbea1879ce5573.pdf
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