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IRIS METALS LIMITED Capital/Financing Update 2025

Aug 25, 2025

65139_rns_2025-08-25_21a59b65-e25a-46e4-82a2-5b281ea37761.pdf

Capital/Financing Update

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ASX:IR1 - ASX RELEASE I 26 August 2025

3.30% li₂o uncovered at edison project,

south dakota, usa

HIGHLIGHTS

  • Results from the Phase I diamond drilling program at the Edison Project, South Dakota, USA, confirm high-grade lithium intersections, expanding the known mineralised pegmatite dike complex

  • 15 drill holes totaling 2,278m at the Edison Project completed and new key intersections include:

EDD-25-007

  • 2.95m @ 2.76% Li2O from 95.3m

EDD-25-009

  • 6.65m @ 3.30% Li₂O from 54.6m

  • The 2025 drilling provided critical insights into the project’s complex geology

  • Phase I drilling revealed multiple pegmatite dikes hosting high-grade lithium mineralisation, enhancing the project’s resource potential

  • Indicates significant opportunities for deeper mineralisation to expand future resource estimates, as pegmatites remain open at depth

  • IRIS is developing a Phase II drilling program to further delineate the high potential lithium mineral system supporting its ‘hub and spoke’ development strategy for its South Dakota portfolio

IRIS Metals Limited (ASX: IR1 ) (“ IRIS ” or “ the Company ”) is pleased to announce the successful completion and results of its Phase I diamond drilling program at the Edison Project in South Dakota, USA . The program targeted multiple spodumene-bearing pegmatites, revealing exceptional high-grade lithium mineralisation.

IRIS Metals U.S. Operations President, Matt Hartmann, commented:

“We are very pleased with the exceptional results from the Edison Project’s diamond drilling campaign, confirming high-grade lithium in the pegmatite dike system and providing some of the highest-grade lithium intercepts to date in the Black Hills. These results underscore the district-scale potential of IRIS’ portfolio as we advanced toward establishing our ‘hub and spoke’ production model. We are swiftly advancing our project study, set for completion in early 2026, which we anticipate will demonstrate robust economics and position IRIS to meet the growing near-term demand for critical minerals in the United States.”

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Diamond Drilling Program Summary

IRIS Metals Phase 1 diamond drill program at the Edison Project comprised 15 diamond drill holes totaling 2,278 metres, utilising HQ and PQ diamond core drilling from the surface. This release reports results from the entire program, with data from the first four drill holes previously disclosed[1] .

Assay results confirm high-grade lithium mineralisation within spodumene-bearing pegmatites, typical of South Dakota’s Black Hills region.

New key intersections include:

EDD-25-007

  • 2.95m @ 2.76% Li2O from 95.3m

EDD-25-009

  • 6.65m @ 3.30% Li2O from 54.6m

Significant intersections previously reported included:

EDD-25-001[1]

  • 13.4m @ 1.78% Li2O from 41.5m, including:

  • 7.0m @ 2.22% Li2O from 43.5m

  • 2.4m @ 2.51% Li2O from 52.5m

EDD-25-004[1]

  • 3.6m @ 1.21% Li₂O from 33.4m, including:

  • 1.9m @ 1.84% Li₂O from 35.1m

Core logging and sampling were conducted at IRIS’s facility in Custer, South Dakota, with assays completed by SGS Laboratories. The pegmatites display varied structural formations, including dyke and blowout shapes, with complex structural controls indicating potential for lateral and depth extensions. The drilling program successfully confirmed pegmatite continuity across offsetting fault structures, with all pegmatites remaining open at depth.

Supporting Figures and Tables:

  • Figure 1: Illustrates the location and downhole traces of drill holes at the Edison Project

  • Figure 2: Presents a cross-section highlighting the geometries of mineralisation for significant intercepts reported in this release

  • Table 1: Summarises all Phase 1 drill intercepts

  • Table 2: Details the location and geometry of drill holes completed during the Phase 1 program

1 IR1 ASX Announcement: IRIS Confirms High-Grade Lithium at Edison as it Advances U.S. Development, dated 16 June 2025.

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Figure 1: Diamond drill hole (DDH) locations at the Edison Project

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Figure 2: Section A-A’

Table 1: Table detailing significant lithium results from recent diamond drilling at the Edison Project[2]

Hole ID From To Interval (m) Grade Li2O% Reported
EDD-25-001 41.5 54.9 13.36 1.78 Previous Release
Including 43.5 50.5 7.00 2.22 Previous Release
Including 52.5 54.9 2.36 2.51 Previous Release
EDD-25-002 NSR Previous Release
EDD-25-003 NSR Previous Release
EDD-25-004 33.4 37.0 3.60 1.21 Previous Release
EDD-25-006 NSR This Release
EDD-25-007 95.3 98.2 2.95 2.76 This Release
EDD-25-008 NSR This Release
EDD-25-009 54.6 61.2 6.65 3.30 This Release
EDD-25-010 NSR This Release
EDD-25-011 NSR This Release
EDD-25-012 NSR This Release
EDD-25-013 NSR This Release
EDD-25-014 NSR This Release
EDD-25-015 NSR This Release
  • 2 “Previous Release” in table refers to IR1 ASX Announcement: IRIS Confirms High-Grade Lithium at Edison as it Advances U.S. Development, dated 16 June 2025.

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Table 2: Details of the DDH drill holes completed at the Edison Project

(Coordinate system NAD83_13N)

Hole_ID E_NAD83_13N N_NAD83_13N RL_m Azimuth_T Dip EOH_m Project Hole-
**Type **
EDD-25-001 628085 4860215 1372 12 -90 150.0 Edison DDH
EDD-25-002 628085 4860208 1372 12 -60 60.0 Edison DDH
EDD-25-003 628086 4860196 1373 58 -90 150.0 Edison DDH
EDD-25-004 628087 4860196 1373 58 -60 95.7 Edison DDH
EDD-25-005 628090 4860198 1372 12 -60 100.0 Edison DDH
EDD-25-006 628061 4860161 1362 10 -60 150.0 Edison DDH
EDD-25-007 628064 4860161 1362 43 -60 184.7 Edison DDH
EDD-25-008 628060 4860161 1362 325 -45 200.0 Edison DDH
EDD-25-009 628045 4860213 1377 35 -45 81.0 Edison DDH
EDD-25-010 627988 4860236 1369 45 -60 149.4 Edison DDH
EDD-25-011 627995 4860236 1369 10 -65 229.8 Edison DDH
EDD-25-012 627998 4860264 1377 45 -65 109.8 Edison DDH
EDD-25-013 627934 4860327 1374 60 -90 230.0 Edison DDH
EDD-25-014 627935 4860326 1374 60 -75 230.0 Edison DDH
EDD-25-015 627895 4860368 1377 60 -75 230.0 Edison DDH

Next steps

IRIS is actively planning a Phase II drilling program at the Edison Project to further delineate a mineral resource, leveraging a deeper understanding of the project’s subsurface geology. IRIS is currently defining the scope and schedule for this program to ensure priority targets and efficient execution.

Concurrently, IRIS is conducting due diligence on potential acquisitions in South Dakota to expand and strengthen its regional portfolio.

All activities are focused on advancing the Company’s South Dakota assets toward near-term development, supporting IRIS’ ‘hub & spoke’ strategy for centralised processing across its portfolio. IRIS is accelerating efforts to grow its mineral resources and advance processing studies, targeting a comprehensive economic analysis in early 2026 which looks to establish a multi-mine production unit.

Edison Project Background

The Edison Project, located 4km from Keystone in South Dakota’s Black Hills, is a 100% IRIS Metals-owned lithium exploration asset on 3.5 hectares of privately owned land. The site, historically significant for lithium mining since 1917, includes the former Edison Mine, once owned by Thomas Edison, with spodumene-bearing pegmatites outcropping at the surface. IRIS holds an active exploration permit and has conducted surface sampling and mapping. The maiden Phase I drilling program began in April 2025, targeting high-grade lithium mineralisation, with an initial Mineral Resource Estimate (MRE) planned to be completed after Phase II drilling.

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About The South Dakota Project

The Black Hills of South Dakota are famous for historic lithium mining dating back to 1898 when Libearing spodumene and amblygonite was first mined near the township of Custer. IRIS controls 2,105 federal mineral claims and has agreements over two patented claim blocks.

Existing project areas include:

  • Beecher Project – including Longview and Black Diamond

  • Tin Mountain Project

  • Edison Project

  • Helen Beryl Project

  • Tinton Project

The Beecher pegmatite trend was mined sporadically between the 1920’s and 1950’s for lithium, beryllium, tantalum, mica and feldspar. Limited amounts of lithium spodumene ore from the Beecher mines was shipped to Hill City during the 1940’s where it was processed through a flotation circuit.

IRIS’ is currently moving the Beecher Project to nearterm development and has been granted mining licenses permitting lithium pegmatite mining for these patented claims.

These mining licenses, granted by the State of South Dakota, enable IRIS to fast-track all exploration and mining activities including the right to explore and mine lithium bearing pegmatites.

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Location of IRIS’ projects within South Dakota

ENDS

This announcement was approved for release by the Board of Iris Metals.

For further information, please contact:

COMPANY

INVESTORS & MEDIA

Peter Marks Melissa Tempra E. [email protected] E. [email protected]

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About IRIS Metals (ASX:IR1)

IRIS Metals Ltd (ASX:IR1) is an exploration company with an extensive suite of assets considered to be highly prospective for hard rock lithium located in South Dakota, United States (US). The company’s large and expanding South Dakota Project is located in a mining friendly jurisdiction and provides the company with strong exposure to the battery metals space, and the incentives offered by the US government for locally sourced critical minerals.

The Black Hills have a long and proud history of mining dating back to the late 1800s. The Black Hills pegmatites are famous for having the largest recorded lithium spodumene crystals ever mined. Extensive fields of fertile LCTpegmatites outcrop throughout the Black Hills with significant volumes of lithium spodumene mined in numerous locations.

To learn more, please visit: www.irismetals.com

Forward looking Statements:

This announcement may contain certain forward-looking statements that have been based on current expectations about future acts, events and circumstances. These forward-looking statements are, however, subject to risks, uncertainties and assumptions that could cause those acts, events and circumstances to differ materially from the expectations described in such forward-looking statements. These factors include, among other things, commercial and other risks associated with exploration, estimation of resources, the meeting of objectives and other investment considerations, as well as other matters not yet known to IRIS or not currently considered material by the company. IRIS accepts no responsibility to update any person regarding any error or omission or change in the information in this presentation, or any other information made available to a person or any obligation to furnish the person with further information.

Not an offer in the United States:

This announcement has been prepared for publication in Australia and may not be released to US wire services or distributed in the United States. This announcement does not constitute an offer to sell, or a solicitation of an offer to buy, securities in the United States or any other jurisdiction. Any securities described in this announcement have not been, and will not be, registered under the US Securities Act of 1933 and may not be offered or sold in the United States except in transactions exempt from, or not subject to, the registration requirements of the US Securities Act and applicable US state securities laws.

Competent Persons Statement:

The information in this announcement that relates to exploration results is based on information reviewed by Matt Hartmann, IRIS’ President of U.S. Operations, and a Competent Person who is a Member of the Australasian Institute of Mining and Metallurgy (MAusIMM) (318271), a Registered Member of the Society for Mining, Metallurgy and Exploration (RM-SME) (4170350RM). Matt Hartmann is an exploration geologist with over 20 years’ experience in mineral exploration, including lithium exploration and resource definition in the western United States, and has sufficient experience in the styles of mineralisation and type of deposit under consideration and to the activity undertaken to qualify as a Competent Person as defined in the 2012 Edition of the Australian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Matt Hartmann has consented to the inclusion in this Public Report of the matters based on his information in the form and context in which it appears.

Listing Rule 5.23.2:

In respect of this announcement, where IRIS has referred to, or referenced, prior ASX market announcements, IRIS confirms that it is not aware of any new information or data that materially affects the information included in the relevant market announcement (unless otherwise stated) and, in the case of estimates of mineral resources or ore reserves, that all material assumptions and technical parameters underpinning the estimates in the prior relevant market announcement continue to apply and have not materially changed.

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JORC Code, 2012 Edition – Table 1

JORC Code, 2012 Edition – Table 1 JORC Code, 2012 Edition – Table 1 JORC Code, 2012 Edition – Table 1
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
Criteria JORC Code explanation Commentary
Sampling
techniques
Nature and quality of sampling (eg
cut channels, random chips, or
specific specialised industry
standard measurement tools
appropriate to the minerals under
investigation, such as down hole
gamma sondes, or handheld XRF
instruments, etc). These examples
should not be taken as limiting the
broad meaning of sampling.
Core sampling protocols meet
industry standard practices.
Core sampling is guided by lithology
as determined during geological
logging (i.e., by a geologist). All
pegmatite intervals are sampled in
their entirety (half-core), regardless if
spodumene mineralization is noted
or not (in order to ensure an unbiased
sampling approach) in addition to
~1 to 3 m of sampling into the
adjacent host rock (dependent on
pegmatite interval length) to
“bookend” the sampled pegmatite.
The minimum individual sample
length is typically 0.3-0.5m and the
maximum sample length is typically
2.0 m. Targeted individual pegmatite
sample lengths are 1.0 m.
All drill core is oriented to maximum
foliation prior to logging and
sampling and is cut with a core saw
into half-core pieces, with one half-
core collected for assay, and the other
half-core remaining in the box for
reference.
Include reference to measures
taken to ensure sample
representivity and the appropriate
calibration of any measurement
tools or systems used.
All drill holes are routinely logged by
Senior geologists with extensive
experience in LCT pegmatites and
sampling methodology. Equipment
such as S.G. scales are designed as
such with factory calibration
certifcates.
Aspects of the determination of
mineralisation that are Material to
the Public Report.
Lithium bearing minerals including
spodumene weather to clays in the
oxidised regolith and are not
recognised when drilling encounters
pegmatites at shallow depths.

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Drilling techniques Drill type (eg core, reverse
circulation, open-hole hammer,
rotary air blast, auger, Bangka,
sonic, etc) and details (eg core
diameter, triple or standard tube,
depth of diamond tails, face-
sampling bit or other type, whether
core is oriented and if so, by what
method, etc).
Diamond drilling was carried out by
Scion cutting a mix of PQ and HQ
sized core
Drill sample
recovery
Method of recording and assessing
core and chip sample recoveries
and results assessed.
Core recovery is very good and
typically exceeds 90%
Measures taken to maximise
sample recovery and ensure
representative nature of the
samples.
Sample recovery is maximised by
using experienced drillers, routine
geologists’ presence the rig when the
tube is pulled, feedback if recovery
low/ core missing, Triple tube drilling
methods ensure maximum recovery.
Penalties for excessive core loss in
the contract. Regular cross checking
of depth on core blocks to run books
and actual core measurements.
Whether a relationship exists
between sample recovery and grade
and whether sample bias may have
occurred due to preferential
loss/gain of fine/coarse material.
Negligible in diamond drill core
pegmatite resource drilling
Logging Whether core and chip samples
have been geologically and
geotechnically logged to a level of
detail to support appropriate
Mineral Resource estimation,
mining studies and metallurgical
studies.
All drill holes are routinely logged by
Senior geologists with extensive
experience in LCT pegmatites.
Upon receipt at the core shack, all
drill core is pieced together, oriented
to maximum foliation, metre marked,
geotechnically logged (including
structure), alteration logged,
geologically logged, and sample
logged on an individual sample basis.
Core box photos are also collected of
all core drilled, regardless of
perceived mineralization. Specifc
gravity measurements of pegmatite
are also collected at systematic
intervals for all pegmatite drill core
using the water immersion method,
as well as select host rock drill core.
The logging is qualitative by nature,
and includes estimates of
spodumene grain size, inclusions,
and model mineral estimates.

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These logging practices meet or
exceed current industry standard
practices.
Whether logging is qualitative or
quantitative in nature. Core (or
costean, channel, etc) photography.
The core logging is qualitative by
nature, and includes estimates of
spodumene grain size, inclusions,
and model mineral estimates.
Geological logging adheres to the
Company policy and includes
lithological, mineralogical, alteration,
veining and weathering.
The total length and percentage of
the relevant intersections logged.
All holes were logged in full.
Sub-sampling
techniques and
sample preparation
If core, whether cut or sawn and
whether quarter, half or all core
taken.
Drill core sampling follows industry
best practices. Drill core was saw-cut
with half-core sent for geochemical
analysis and half-core remaining in
the box for reference. The same side
of the core was sampled to maintain
representativeness.
Sample sizes are appropriate for the
material being assayed.
A Quality Assurance / Quality Control
(QAQC) protocol following industry
best practices was incorporated into
the program and included systematic
insertion of quartz blanks and
certifed reference materials (CRMs)
into sample batches at a rate of
approximately 5% each. Additionally,
analysis of pulp-split and course-
split sample duplicates were
completed to assess analytical
precision at different stages of the
laboratory preparation process, and
external (secondary) laboratory pulp-
split duplicates were prepared at the
primary lab for subsequent check
analysis and validation at a
secondary lab.
All protocols employed are considered
appropriate for the sample type and
nature of mineralization and are
considered the optimal approach for
maintaining representativeness in
sampling.
If non-core, whether riffled, tube
sampled, rotary split, etc and
whether sampled wet or dry.
NA.

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For all sample types, the nature,
quality and appropriateness of the
sample preparation technique.
Core samples defned and marked to
lithological boundaries where logical,
sawed on site at a purpose built core
saw facility, and put in calico sample
bags for freight to the Laboratory.
Samples in the ore zone are taken at
a minimum of 0.3m and maximum of
1m down hole.
Quality control procedures adopted
for all sub-sampling stages to
maximise representivity of samples.
Standards and duplicates were
inserted every 20 samples - blanks
were inserted every 50 samples.
Measures taken to ensure that the
sampling is representative of the in
situ material collected, including for
instance results for field
duplicate/second-half sampling.
Results of standards, duplicates and
blanks will be compared to the
expected results for quality control
Whether sample sizes are
appropriate to the grain size of the
material being sampled.
The ideal mass of 2kg-3kg samples is
appropriate to the sampling
methodology and the material being
sampled.
Quality of assay
data and laboratory
tests
The nature, quality and
appropriateness of the assaying
and laboratory procedures used and
whether the technique is
considered partial or total.
Core samples collected were shipped
to SGS for standard sample
preparation (code PRP89) which
includes drying at 105°C, crush to 75%
passing 2 mm, riffe split 250 g, and
pulverize 85% passing 75 microns.
The samples were homogenized and
subsequently analyzed for multi-
element (including Li and Ta) using
sodium peroxide fusion with ICP-
AES/MS fnish (codes GE_ICP91A50
and GE_IMS91A50).
The assay techniques are considered
appropriate for the nature and type of
mineralization present, and result in
a total digestion and assay for the
elements of interest.
The Company relies on both its
internal QAQC protocols (systematic
quarter-core duplicates, blanks,
certifed reference materials, and
external checks), as well as the
laboratory’s internal QAQC.
For assay results disclosed, samples
havepassedQAQC review.
For geophysical tools,
spectrometers, handheld XRF
instruments, etc, the parameters
used in determining the analysis
including instrument make and
model, reading times, calibrations
factors applied and their derivation,
etc.
NA.

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Nature of quality control procedures
adopted (eg standards, blanks,
duplicates, external laboratory
checks) and whether acceptable
levels of accuracy (ie lack of bias)
and precision have been
established.
Standards and duplicates were
inserted every 20 samples - blanks
were inserted every 50 samples. Along
with standard laboratory check
methods.
Verification of
sampling and
assaying
The verification of significant
intersections by either independent
or alternative company personnel.
Intervals are reviewed and compiled
by the Exploration Manager and
Senior Geologists prior to disclosure,
including a review of the Company’s
internal QAQC sample analytical data.
No twinned holes have been
completed.
Data is stored directly into excel
templates, including direct import of
laboratory analytical certifcates as
they are received. The Company
employs various on-site and post
QAQC protocols to ensure data
integrity and accuracy.
Adjustments to data include
reporting lithium and tantalum in
their oxide forms, as it is reported in
elemental form in the assay
certifcates. Formulas used are Li2O =
Li x 2.1527, and Cs2O = Cs x 1.0602
where applicable
The use of twinned holes.
Documentation of primary data,
data entry procedures, data
verification, data storage (physical
and electronic) protocols.
Discuss any adjustment to assay
data.
Location of data
points
Accuracy and quality of surveys
used to locate drill holes (collar and
down-hole surveys), trenches, mine
workings and other locations used
in Mineral Resource estimation.
Sample locations were recorded
using a handheld GPS using the
NAD83_13 Datum.
At the end of the drill programs
Collars were picked up external by
registered surveyors using
differential GPS in NAD83_134 Datum
Specification of the grid system
used.
Quality and adequacy of
topographic control.
Data spacing and
distribution
Data spacing for reporting of
Exploration Results.
Sampling undertaken was of a
reconnaissance nature and
widespread across the pegmatite
bodies.
Whether the data spacing, and
distribution is sufficient to
establish the degree of geological
and grade continuity appropriate for
the Mineral Resource and Ore
Reserve estimation procedure(s)
and classifications applied.
Holes are generally drilled on a 40m
grid. Based on the nature of the
mineralization and continuity in
geological modelling, it is believed
that a 40 m spacing will be suffcient
to support a mineral resource
estimate.

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Whether sample compositing has
been applied.
N/A for Diamond Drilling. The
pegmatites were sampled in full (no
compositing.)
Orientation of data
in relation to
geological structure
Whether the orientation of sampling
achieves unbiased sampling of
possible structures and the extent
to which this is known, considering
the deposit type.
Drill holes were generally designed
orthaganal to the general trend of the
pegmatites as mapped at surface. No
bias is determined.
If the relationship between the
drilling orientation and the
orientation of key mineralised
structures is considered to have
introduced a sampling bias, this
should be assessed and reported if
material.
Sample security The measures taken to ensure
sample security.
Chain of custody is maintained by Iris
personnel on site and sent in sealed
pallets and bags to the Laboratory.
Audits or reviews The results of any audits or reviews
of sampling techniques and data.
Results were reviewed and deemed
reliable for the nature of the testing.
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
Criteria JORC Code explanation Commentary

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Mineral tenement
and land tenure
status
Type, reference name/number,
location and ownership including
agreements or material issues with
third parties such as joint ventures,
partnerships, overriding royalties,
native title interests, historical
sites, wilderness or national park
and environmental settings.
The project is in South Dakota USA,
the project comprises free-hold
patented claims optioned by Iris
Metals
The security of the tenure held at
the time of reporting along with any
known impediments to obtaining a
licence to operate in the area.
No known impediments.
Exploration done by
other parties
Acknowledgment and appraisal of
exploration by other parties.
No modern exploration has been
conducted at this Project
Geology Deposit type, geological setting and
style of mineralisation.
LCT-pegmatite hosted lithium
spodumene mineralisation similar in
nature to other zoned lithium
pegmatite deposits mined around the
world
Drill hole
Information
A summary of all information
material to the understanding of
the exploration results including a
tabulation of the following
information for all Material drill
holes:
The relevant table is provided in
Tables 1 and 2 of the text.
easting and northing of the drill
hole collar
elevation or RL (Reduced Level –
elevation above sea level in metres)
of the drill hole collar
dip and azimuth of the hole
down hole length and interception
depth
hole length.
If the exclusion of this information
is justified on the basis that the
information is not Material and this
exclusion does not detract from the
understanding of the report, the
Competent Person should clearly
explain why this is the case.
Data aggregation
methods
In reporting Exploration Results,
weighting averaging techniques,
maximum and/or minimum grade
truncations (eg cutting of high
grades) and cut-off grades are
usually Material and should be
stated.
NA.

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Where aggregate intercepts
incorporate short lengths of high-
grade results and longer lengths of
low-grade results, the procedure
used for such aggregation should
be stated and some typical
examples of such aggregations
should be shown in detail.
No specifc grade cap or cut-off was
used during grade width calculations.
Pegmatites have inconsistent
mineralization by nature, resulting in
most intervals having a small
number of poorly mineralized
samples throughout the interval
included in the calculation. Non-
pegmatite internal dilution is limited
to typically <4 m where relevant
intervals indicated where assays are
reported.
Intercepts are calculated using
weighted averages to compensate for
differingsample lengths.
The assumptions used for any
reporting of metal equivalent values
should be clearly stated.
No metal equivalents have been
reported.
Relationship
between
mineralisation
widths and intercept
lengths
These relationships are particularly
important in the reporting of
Exploration Results.
Relationship between mineralisation
widths and intercept lengths
If the geometry of the
mineralisation with respect to the
drill hole angle is known, its nature
should be reported.
Geological modelling is ongoing;
however, current interpretation
supports a large pegmatite body (Tin
Mountain) of fat dipping 20 degrees
towards the north.
All reported widths are close to true
widths but may vary from hole to hole
based on the drill hole angle and the
highly variable nature of pegmatite
bodies, which tend to pinch and swell
aggressively along strike and to
depth. i.e. The dip of the mineralized
pegmatite body may vary in a dip
sense and along strike, so the true
widths are not always apparent until
several holes have been drilled in any
drill-fence. The logistics of placing
drill pads was also limiting in this
phase, so multiple holes were fanned
from onepad
If it is not known and only the down
hole lengths are reported, there
should be a clear statement to this
effect (eg ‘down hole length, true
width not known’).
If the geometry of the mineralisation
with respect to the drill hole angle is
known, its nature should be reported.
Cross sections with drill holes and
interpretation also accompany the
results when reported.
Diagrams Appropriate maps and sections
(with scales) and tabulations of
intercepts should be included for
any significant discovery being
reported These should include, but
not be limited to a plan view of drill
hole collar locations and
appropriate sectional views.
Provided in the text.

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Balanced reporting Where comprehensive reporting of
all Exploration Results is not
practicable, representative reporting
of both low and high grades and/or
widths should be practiced avoiding
misleading reporting of Exploration
Results.
Please refer to the table(s) included
herein as well as those posted on the
Company’s website.
Results for every individual
pegmatite interval that is greater
than 1 m @ 1.0%Li2O has been
reported. Drill holes with no
signifcant results are also reported
as such.
Other substantive
exploration data
Other exploration data, if
meaningful and material, should be
reported including (but not limited
to): geological observations;
geophysical survey results;
geochemical survey results; bulk
samples – size and method of
treatment; metallurgical test
results; bulk density, groundwater,
geotechnical and rock
characteristics; potential
deleterious or contaminating
substances.
Various mandates required for
advancing the Project towards
economic studies have been or are
about to be initiated, including but
not limited to, metallurgy,
geomechanics, hydrogeology,
hydrology, stakeholder engagement,
geochemical characterization, as well
as transportation and logistical
studies.
Further work The nature and scale of planned
further work (eg tests for lateral
extensions or depth extensions or
large-scale step-out drilling).
Future Drill testing is being planned,
further mapping and rock chip, soil
sampling, is also ongoing.
Diagrams clearly highlighting the
areas of possible extensions,
including the main geological
interpretations and future drilling
areas, provided this information is
not commercially sensitive.
Will be provided when additional drill
results and further exploration data
has been reviewed.

IRISMETALS.COM

ASX:IR1