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IRIS METALS LIMITED Capital/Financing Update 2025

Mar 5, 2025

65139_rns_2025-03-05_56ad585a-9aa1-4af6-ae7e-9ce380fe0a45.pdf

Capital/Financing Update

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ASX:IR1 - ASX RELEASE I 6 MARCH 2025

ir1 intersects high-grade lithium & caesium at tin mountain, south dakota, usa

HIGHLIGHTS

Phase I drilling at the Tin Mountain Project confirmed significant high-grade lithium and caesium intersections, including:

TDD-24-008

o 5.2m @ 2.05% Li2O from 39.2m, including:

  • 1.5m @ 3.04% Li2O from 40.8m

TDD-24-007

o 1.0m @ 1.54% Cs2O from 31.2m

  • Drilling results demonstrate that the pegmatite extends down-dip under cover, remains open at depth, and confirms the lateral extent of mineralisation nearsurface

  • Phase II drilling will target deeper and central core pegmatite zones with horizontal drilling technology, alongside mineralogical mapping studies to progress towards a maiden mineral resource estimate

IRIS Metals Limited (ASX: IR1 ) (“ IRIS ” or “ the Company ”) is pleased to announce the results of its Phase I diamond drilling program at the Tin Mountain Project, South Dakota, USA . The findings confirm high-grade mineralisation and the multi-element potential of the pegmatite.

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

“The Phase I drill results at Tin Mountain confirms high-grade mineralisation and the multi-element potential of the host pegmatite, including lithium and now caesium. Plans for Phase II are underway to target the central pegmatite zone which proved difficult to access with a conventional surface drilling approach. IRIS will leverage extensive surface exposure and historic mining operations, combined with 2025 advanced technologies, to deepen our understanding of the Tin Mountain Project and advance towards a maiden mineral resource”.

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Diamond Drilling Program Summary

A total of 23 diamond drill holes, for a total of 1,122m, were successfully completed during the Phase I program in late 2024. Results have now been received for all holes, including:

TDD-24-006

  • 3.0m @ 1.24% Li2O from 26.0m,

  • 3.0m @ 3.20% Li2O from 36.7m,

  • 2.0m @ 1.68% Li2O from 43.2m

TDD-24-007

  • 1.0m @ 1.54% Cs2O from 31.2m

TDD-24-008

  • 5.2m @ 2.05% Li2O from 39.2m, including:

  • 1.5m @ 3.04% Li2O from 40.8m

TDD-24-017

  • 1.2m @ 1.56% Li2O from 13.7m,

  • 1.8m @ 3.90% Li2O from 23.5m,

  • 2.7m @ 1.47% Li2O from 35.6m, including:

  • 1.0m @ 3.37% Li2O from 37.3m

TDD-24-021

  • 6.7m @ 1.11% Li2O from 8.3m, including:

  • 2.1m @ 2.29% Li2O from 12.9m

The drill program utilised HQ and PQ diamond core drilling from the surface, with core logging and sampling conducted at IRIS’s core facility in Custer, South Dakota. Laboratory assays were completed by SGS.

Reported drill hole intercepts confirm high-grade lithium within the pegmatite, typical of megacrystic pegmatites. Table 1 summarises all Phase I drill intercepts, and Table 2 presents the location and geometry of all drill holes completed during Phase I program at the Tin Mountain Project.

Lithium mineralisation at Tin Mountain consists of primary magmatic spodumene crystals dispersed within the inner core of a zoned LCT pegmatite. Phase I targets focused on confirming the near-surface lateral extent of the pegmatite and exploring its down-dip extension. However, steep terrain and hazards from historical underground workings limited drill collar placement, adding complexity to the program.

Phase I drilling results confirmed the near-surface lateral extent of the pegmatite and demonstrated that the pegmatite extended down-dip under cover, remaining open at depth. The area beneath the

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historical cavern and underground workings was not adequately tested using conventional surface core drilling methods, and now represents the priority exploration target for Phase II.

Figures 1 and 2 illustrate the drill program geometry, with Figure 3 highlighting a high-grade intercept of 5.2m @ 2.05% Li2O from 39.2m in TDD-24-008 . Significant mineralised zones from TDD-24-001 and TDD-24-006 further indicate continuity of mineralisation from surface to the deepest drilled points.

Beyond lithium assays, all core material was analysed for other critical minerals known to exist within the pegmatites of the region.

Historical operations at Tin Mountain identified caesium-bearing pollucite, and Phase I drilling confirmed the presence of recoverable caesium with a notable interval of 1.0m @ 1.54% Cs2O in TDD24-007 from 31.2m . No additional caesium intercepts of significant grade were encountered during the Phase I drilling. IRIS will conduct further studies to identify the caesium-bearing minerals and evaluate recovery methods, aiming to optimise the potential value of additional critical minerals across its Black Hills project portfolio.

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Figure 1: Diamond drill hole (DDH) locations

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Figure 2: Section A-A’

Discussion

Results from the 2024 diamond drilling program confirm that the Tin Mountain Project’s pegmatite hosts both high grade lithium and caesium, displays a shallow weathering profile, and remains open at depth with the core yet to be drilled.

Findings from the Phase I drill program have accelerated planning for Phase II, which will deploy a horizontal drill rig positioned on favorable topography to advance lateral core holes beneath the existing cavern and underground workings, targeting the core of the zoned pegmatite.

Additionally, IRIS is planning detailed mineralogical mapping of the outcropping pegmatite to compare mineral distributions between surface exposures and drill core. This will aid in assessing the megacrystic pegmatite and modeling work as IRIS advances Tin Mountain to a maiden mineral resource estimate.

These initial results underscore the project's strategic advantages, including its location in a mining-friendly jurisdiction with robust infrastructure—nearby road, rail, and power—in one of the world’s most significant lithium markets. With lithium designated as a critical mineral by the U.S. government, large-scale grants aim to bolster domestic supply chains, reducing reliance on foreign sources and enhancing the economic potential of the Tin Mountain Project.

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Ongoing Activities

The Company is preparing for the 2025 field season with drill programs planned across the Beecher, Tin Mountain, and Edison Projects. An expanded airborne geophysics program is underway, building on the smaller survey completed in 2024. This larger effort will target areas within the extensive Federal lands exploration package, aiming to define and permit drill-ready targets for 2025.

Additionally, the Company continues to evaluate and conduct due diligence on potential acquisitions in South Dakota-based tenure to further strengthen its portfolio.

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Figure 3: Meter scale spodumene megacrystic ‘logs’ in the walls of the Tin Mountain Mine.

Tin Mountain Background

The Tin Mountain Project is located 10km from the township of Custer in the Black Hills of South Dakota. The Project is located on private land with a current option agreement held by Iris Metals covering 5.8 hectares. The Tin Mountain Project includes the formerly producing Tin Mountain mine.

The Tin Moutnain mine claim was filed in 1889 for tin exploration, and then operated in the late 1920’s, and again in 1940’s - 1950’s. The pegmatite contains a number of critical and industrial minerals including spodumene, amblygonite, beryl, pollucite, muscovite, cassiterite, columbitetantalite, microlite, quartz and lepidolite. The spodumene crystals contained in the pegmatite are classified as megacrystic “logs” and are some of the largest found in the world. The spodumene megacrysts are up to 14m in length and 1m in width.

The spodumene bearing zone of the Tin Mountain pegmatite has an outcropping strike length of nearly 150m. Historic mining operations have excavated a large cavern at the surface and a small extent of underground workings which lie beneath and adjacent to the cavern.

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Table 1: Significant lithium results from recent diamond drilling at the Tin Mountain Project

Hole ID From To Interval
(m)
Grade
Li2O%
TDD_24-001 1.0 8.5 7.5 1.06
Including 7.5 8.5 1.0 2.43
TDD_24-002 2.2 2.8 0.6 1.31
TDD_24-003 NSR
TDD_24-004 NSR
TDD_24-005 NSR
TDD_24-006 26.0 29.0 3.0 1.24
AND 36.7 39.7 3.0 3.20
AND 43.2 45.2 2.0 1.68
TDD_24-007 19.4 20.7 1.3 1.79
TDD_24-008 34.3 35.0 0.8 1.16
AND 39.2 44.4 5.2 2.05
Including 40.8 42.2 1.5 3.04
TDD_24-009 NSR
TDD_24-010 NSR
TDD_24-011 NSR
TDD_24-012 17.3 18.8 1.5 1.00
TDD_24-013 NSR
TDD_24-014 26.5 29.7 3.2 0.67
TDD_24-015 NSR
TDD_24-016 12.7 15.4 2.7 1.36
TDD_24-017 13.7 14.8 1.2 1.56
AND 23.5 25.3 1.8 3.90
AND 35.6 38.3 2.7 1.47
Including 37.3 38.3 1.0 3.37
TDD_24-018 15.0 16.0 1.0 1.71
AND 19.0 21.0 2.0 1.75
TDD_24-019 5.0 6.0 1.0 1.03
TDD_24-020 2.0 3.9 1.9 1.41
TDD_24-021 8.3 15.0 6.7 1.11
Including 12.9 15.0 2.1 2.29
Including 12.9 13.7 0.8 3.24
TDD_24-022 NSR
TDD_24-023 NSR

*NSR = No Significant Result

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

(Coordinate system NAD83_13N)

Hole ID East North Elev
(m)
Azimuth
Dip

Drilled
Depth
(m)
Hole-Type
TDD-24-001 602983
4844565

1707
325 -55
50.2
DDH
TDD-24-002 602984
4844563

1707
325 -90
50.4
DDH
TDD-24-003 602986
4844565

1707
235 -55
50.4
DDH
TDD-24-004 602986
4844563

1707
145 -55
30.8
DDH
TDD-24-005 602987
4844568

1707
55 -55
4.7
DDH
TDD-24-005A
602986

4844567

1707
55 -55
11
DDH
TDD-24-006 602940
4844610

1723
60 -55
80.1
DDH
TDD-24-007 602937
4844609

1723
60 -90
80.7
DDH
TDD-24-008 602937
4844610

1723
30 -55
99.9
DDH
TDD-24-009 602936
4844611
1723 0 -60
116.5
DDH
TDD-24-010 602929
4844572

1719
180 -55
50.5
DDH
TDD-24-011 602933
4844576

1718
110 -80
60.5
DDH
TDD-24-012 602933
4844576

1718
110 -55
60.8
DDH
TDD-24-013 602931
4844577

1719
60 -75
48.9
DDH
TDD-24-014 602931
4844578

1719
60 -55
49
DDH
TDD-24-015 602929
4844578

1718
20 -55
38.3
DDH
TDD-24-016 602938
4844603

1723
145 -55
21.9
DDH
TDD-24-017 602937
4844604

1723
145 -80
53.8
DDH
TDD-24-018 602939
4844604

1723
115 -75
21.5
DDH
TDD-24-019 602935
4844544

1715
325 -55
22
DDH
TDD-24-020 602936
4844543

1715
325 -90
20.8
DDH
TDD-24-021 602956
4844549

1716
0 -55
35.5
DDH
TDD-24-022 602956
4844547

1716
325 -90
23.7
DDH
TDD-24-023 603017
4844567

1706
325 -55
40
DDH

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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 Li-bearing 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 near-term 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 LCT-pegmatites 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.

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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 defnted and marked to
lithological boundaries where logical,
saw on site at a purpose built core
saw facility, and put in callicoe 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.

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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.
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
Project Managers 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
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.

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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.
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

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(Criteria listed in the preceding section also apply to this section.)

(Criteria listed in the preceding section also apply to this section.)
Criteria JORC Code explanation Commentary
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.

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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.
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.

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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.
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).
Drone geophysical magnetic and
radiometric surveys have been fown.
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 drill results
and further exploration data has been
reviewed.

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