Author: Dateline Resources Limited

SAN BERNARDINO, CA / ACCESS Newswire / February 27, 2026 / Dateline Resources Limited (ASX:DTR)(OTCQB:DTREF)(FSE:YE1) (Dateline or the Company) is pleased to announce it has strategically acquired a new project, the Music Valley HREE Project (Music Valley), located in Riverside County, California, USA. Music Valley consists of 57 claims totaling 1,140 acres.

Highlights

• Music Valley heavy rare earths (HREE) acquisition: Dateline has secured the Music Valley HREE Project, comprising 57 claims over 1,140 acres in the Music Valley area of California.

• HREE prospectivity: Historical United States Geological Survey (USGS) work describes HREE mineralization hosted in xenotime within the biotite-rich Pinto Gneiss, with a fractionated HREE signature.

• Historical grades reported: USGS rock chip results reported 6.69%-15.04% TREO in the region, including high Yttrium and Dysprosium grades.

• Rock Chip Sampling and Geophysics: The Company intends to undertake mapping, geochemistry and geophysics to define drill targets at Music Valley.

• Strategic investment: As part of the acquisition terms, Dateline has completed a US$1.0 million investment in Fermi Critical Minerals Inc. (Fermi) intended to accelerate exploration across Fermi’s uranium and rare earth portfolio.

• Scale and pipeline leverage: Fermi has eight projects at different stages of exploration and development, with a pipeline of catalysts across uranium and REE projects in the United States.

Dateline’s Managing Director, Stephen Baghdadi, commented:

“Music Valley gives Dateline direct exposure to heavy rare earth mineralization in California with historically reported high-grade TREO results and strong heavy rare earth enrichment.

“Our US$1 million investment in Fermi provides additional leverage to a substantial U.S. uranium and rare earth portfolio, including drill-permitted projects in Wyoming and Colorado.

“This transaction enhances Dateline’s exposure to gold, uranium, light and heavy rare earths within the United States at a time when domestic supply chains are increasingly strategic.”

Music Valley Heavy Rare Earths Project

The project is located approximately eight miles southeast of Twentynine Palms in Riverside County, California and covers the main geological units and drainages highlighted in historical USGS sampling programs.

Strategic Significance

Rare Light rare earth elements (LREEs) such as neodymium and praseodymium are essential to high-performance permanent magnets used in electric vehicles, wind turbines and advanced motors. Heavy rare earth elements (HREEs) such as dysprosium and terbium enhance magnet strength and heat resistance and are critical to defence systems, advanced electronics and next-generation energy technologies, yet global production and processing remain heavily concentrated outside the United States.

With supply chain security now a national priority, HREEs represent a strategic gap in the U.S. critical minerals landscape. Through its California rare earth portfolio, including the Music Valley Heavy Rare Earth Project and the Colosseum, located near the Mountain Pass rare earths mine, Dateline is positioning itself to contribute to both LREE and HREE demand growth while supporting a more secure and diversified domestic supply chain.

Geological Setting

Rare earth mineralization in the broader Music Valley area was first identified in 1954 by USGS geologists. USGS mapping shows the Music Valley area is underlain by Proterozoic to Palaeozoic metasedimentary rocks intruded by granitic and alkaline igneous bodies. These units are overlain locally by Tertiary volcanic and sedimentary sequences. Faulting and fracturing are widespread and control fluid movement and mineral deposition.

USGS studies describe rare earth mineralisation associated with alkaline intrusive rocks, altered volcanic units, and reworked sedimentary materials. Heavy rare earth elements occur within accessory minerals such as xenotime, monazite, and other REE phosphates.

USGS Rock Chip and Sample Results

USGS rock chip and sediment sampling across Music Valley returned anomalous total rare earth element values with elevated proportions of heavy rare earths¹. Several samples reported enrichment in dysprosium, terbium, yttrium, and ytterbium relative to light rare earth elements. The geochemical signature reflects fractionated rare earth systems consistent with heavy rare earth dominant mineralisation.

Table 1: USGS rock chip sampling results from Pinto Gneiss in the region¹

Element	Concentration (wt percent)	Stoichiometric Equivalent (%)1
Yttrium	3.50 – 8.80% Y	4.44 – 11.18% Y2O3
Lanthanum	0.26 – 0.34% La	0.30 – 0.40% La2O3
Cerium	0.47 – 0.94% Ce	0.55 – 1.10% CeO2
Neodymium	0.24 – 0.41% Nd	0.28 – 0.48% Nd2O3
Dysprosium	0.22 – 0.41% Dy	0.25 – 0.47% Dy2O3
Ytterbium	0.46 – 0.75% Yb	0.52 – 0.85% Yb2O3
Thorium	0.31 – 0.49% Th	0.35 – 0.56% ThO2
TOTAL		6.69 – 15.04% TREO

1. Stoichiometric oxide equivalent calculated by multiplying the wt% of the element by the relevant conversion factor

2. Sample locations not specified

¹ Evans, J.R., 1964, Xenotime mineralization in the southern Music Valley area, Riverside County, California: California Division of Mines and Geology Special Report 79, 24 p.

Exploration Rationale

Dateline’s exploration model for the Music Valley HREE Project focuses on:

• Documented heavy rare earth enrichment from USGS sampling,

• Favourable alkaline and altered host rocks,

• Structural controls which concentrate mineralised fluids and sediments, and

• Potential for near surface mineralisation.

Planned Work

In order to build up a ‘stacked evidence’ model prior to drilling, the initial work programs will include:

• Detailed geological mapping,

• Confirmatory rock chip and soil sampling,

• Review and integration of historical USGS datasets, and

• Geophysical surveys to define subsurface targets.

Dateline considers the Music Valley area to be highly prospective and is working to expand the project area through further acquisitions and/or claim staking.

The planned work program at the Music Valley Project will be funded from the existing cash balance of over $53M.

Strategic investment in Fermi Critical Minerals Inc.

As part of the acquisition terms of the Music Valley HREE Project, Dateline has completed a US$1.0 million strategic equity investment in Fermi. Fermi is raising a total of US$4 million from investors. On completion of the capital raise by Fermi, Dateline will own four million shares out of a total of approximately 45 million shares on issue. Fermi intends to use the funds to accelerate exploration across its U.S. mining portfolio, including drilling on priority uranium targets, additional geophysical surveys, systematic sampling on rare earth properties, technical/modelling work and working capital/regulatory advancement.

Further details on the Fermi project portfolio can be found at https://fermiuranium.com/

Transaction Summary – Total outlay of US$1.05M

Component	What Dateline secured	Key attributes
Music Valley HREE Project (California)	100% of the Music Valley claim package	57 claims; 1,140 acres; HREE prospectivity; xenotime-hosted mineralization within Pinto Gneiss; historical USGS results reported up to 15.04% TREO
Strategic equity investment in Fermi Critical Minerals Inc. (U.S. uranium & REE portfolio)	4 million Fully Paid Ordinary shares in Fermi, exposure to a multi-asset project portfolio	Eight projects 785 federal claims; 11 Wyoming State leases; drill-permitted/near-permitted assets including New Fork Valley & Pitchfork

Additional Gold Upside Potential

The Music Valley area was also historically mined for gold, with dozens of small-scale adits and shafts developed in the area. Most of this activity occurred prior to 1920 so there is only limited information available with regards to tonnes and grade. Whilst rare earths will be the primary target at Music Valley, mapping, rock chip sampling and geochemistry will also assess the gold potential of the region.

Figure 3 shows the historic gold prospects in the Mindat database.

This press release has been authorized for release by the Board of Dateline Resources Limited.

For more information, please contact:

Stephen Baghdadi
Managing Director
+61 2 9375 2353

Andrew Rowell
Corporate & Investor Relations Manager
+61 400 466 226
a.rowell@dtraux.com
www.datelineresources.com.au

Follow Dateline on socials:
X – @Dateline_DTR
Truth Social – @dateline_resources
LinkedIn – dateline-resources
YouTube – @dateline.resources

About Dateline Resources Limited

Dateline Resources Limited (ASX:DTR)(OTCQB:DTREF)(FSE:YE1) is an Australian company focused on mining and exploration in North America. The Company owns 100% of the Colosseum Gold-REE Project in California.

The Colosseum Gold Mine is located in the Walker Lane Trend in East San Bernardino County, California. On 6 June 2024, the Company announced to the ASX that the Colosseum Gold mine has a JORC-2012 compliant Mineral Resource estimate of 27.1Mt @ 1.26g/t Au for 1.1Moz. Of the total Mineral Resource, 455koz @ 1.47/t Au (41%) are classified as Measured, 281koz @1.21g/t Au (26%) as Indicated and 364koz @ 1.10g/t Au (33%) as Inferred.

On 23 May 2025, Dateline announced that updated economics for the Colosseum Gold Project generated an NPV6.5 of US$550 million and an IRR of 61% using a gold price of US$2,900/oz.

The Colosseum is located less than 10km north of the Mountain Pass Rare Earth mine. Planning has commenced on drill testing the REE potential at Colosseum.

Dateline owns 100% of the high-grade Argos Strontium Project, also located in San Bernadino County, California. Argos is reportedly the largest strontium deposit in the U.S. with previous celestite production grading 95%+ SrSO₄.

In February 2026, Dateline announced the acquisition of the Music Valley Heavy Rare Earth Project in Riverside County, California. The region has known HREE mineralisation from USGS rock chip sampling, however it has not been subjected to modern exploration techniques.

Forward-Looking Statements

This announcement may contain “forward-looking statements” concerning Dateline Resources that are subject to risks and uncertainties. Generally, the words “will”, “may”, “should”, “continue”, “believes”, “expects”, “intends”, “anticipates” or similar expressions identify forward-looking statements. These forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from those expressed in the forward-looking statements. Many of these risks and uncertainties relate to factors that are beyond Dateline Resources’ ability to control or estimate precisely, such as future market conditions, changes in regulatory environment and the behavior of other market participants. Dateline Resources cannot give any assurance that such forward-looking statements will prove to have been correct. The reader is cautioned not to place undue reliance on these forward-looking statements. Dateline Resources assumes no obligation and does not undertake any obligation to update or revise publicly any of the forward-looking statements set out herein, whether as a result of new information, future events or otherwise, except to the extent legally required.

Competent Person Statement

Sample preparation and any exploration information in this announcement is based upon work reviewed by Mr. Greg Hall who is a Chartered Professional of the Australasian Institute of Mining and Metallurgy (CP-IMM). Mr. Hall has sufficient experience that is relevant to the style of mineralization and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves” (JORC Code). Mr. Hall is a Non-Executive Director of Dateline Resources Limited and consents to the inclusion in the report of the matters based on this information in the form and context in which it appears.

Company Confirmations

The Company confirms it is not aware of any new information or data that materially affects the information included in the announcements dated 23 October 2024 with regard to the Colosseum MRE and 23 May 2025 with regard to Colosseum Project Economics. Similarly, the Company confirms that all material assumptions and technical parameters underpinning the estimates and the forecast financial information referred to in those previous announcements continue to apply and have not materially changed.

SOURCE: Dateline Resources Limited

View the original press release on ACCESS Newswire

SAN BERNARDINO, CALIFORNIA / ACCESS Newswire / February 25, 2026 / Dateline Resources Limited (ASX:DTR)(OTCQB:DTREF)(FSE:YE1) (Dateline or the Company) is pleased to report on the interpretation of the Company’s high-resolution geophysical datasets collected across the Colosseum Project. Gravity, high-resolution airborne magnetics and radiometrics, induced polarization (IP) and magneto-tellurics (MT) were interpreted with geological mapping and surface geochemistry data to identify carbonatite rare earth targets. Three distinct targets demonstrate coincident anomalies that would be expected from a carbonatite source. Two of the targets are defined sufficiently for a diamond drill program.

In addition, drilling in late 2025 (RC25-038) delivered the first drill-based confirmation of mantle-derived anomalous rare earth elements (REE) at the project. This drill hole was completed before the new infill geophysics surveys, with the hole interpreted to have intersected the margin of Target 1. Assaying shows a geochemical fingerprint that points clearly to a mantle-sourced carbonatite system.

Highlights

• Converged Geophysical and Geological Datasets: Multiple high-resolution datasets have been collected, processed and interpreted together for the first time, providing a comprehensive view of the project.

• Rare Earth Elements (REE) halo intersected in drilling: Drillhole RC25-038, on the margin of Target 1, intersected anomalous rare earth elements, representing the first drill-based confirmation of sub surface REE at the project.

• Mantle-Derived REE System Confirmed: The REE signature in RC25-038 is mantle-derived and is directly comparable to the Mountain Pass carbonatite system.

• Carbonatite-Style Geochemical Signature Identified: RC25-038 returned elevated Ba, Sr, Ca, P, Th and U with associated potassic alteration, confirming proximity to an alkaline-carbonatite source.

• Carbonatite Diamond Drilling: Twelve drillhole locations have been finalized to test the Clark Mountain Fault Zone (Target 1) and Eastern Gravity (Target 2) anomalies.

Dateline’s Managing Director, Stephen Baghdadi, commented:

“The completion of the integrated high-resolution datasets has given us a level of confidence in our targeting that we have not had before. Two well-defined targets, twelve holes, and a third zone in the 2200N anomaly that we are continuing to work on. We are advancing this project methodically and the technical foundations are strong.

“Importantly, RC25-038 is an important result, being the first drill-based confirmation of rare earth elements at Colosseum. It carries additional weight, given where it sits on the margin of what is now our highest-priority carbonatite target.”

Combined Datasets Provide a Clearer Picture Than Ever Before

The full suite of geophysical surveys carried out at the Colosseum Project, together with the geochemistry data collected in 2025, has now been brought together and interpreted as a collective dataset for the first time.

Previous announcements described each survey’s result individually. Combining them has identified where signals from completely different techniques, each measuring something unique about the ground beneath the surface, all converge at the same location. When multiple independent methods coincide, the confidence in a target increases significantly. No single survey could provide this level of granularity and clarity on its own.

Importantly, the geochemical results from drill hole RC25-038 (see further in this announcement) and historical surface sampling have also been brought into this combined analysis, allowing the geophysical models to be ground-truthed against real geochemistry.

Figure 1: Carbonatite Targets at Colosseum highlighted by remnant magnetics image. Drillhole RC25-038, drilled in the tailings dam area is shown as a circle, with the 12 planned diamond drillholes shown as crosses in the figure.

Target Areas Combined and Refined

The combined interpretation has refined three distinct areas of REE-carbonatite interest at Colosseum. Two, the Clark Mountain Fault corridor and the Eastern Gravity High, are defined clearly enough to progress drilling immediately. The 2200N anomaly, identified in earlier MT survey work, is being further assessed for drilling after this program.

Target 1: Clark Mountain Fault Zone (Primary REE-Carbonatite Target)

Target 1 is interpreted as a NW bearing structure that is approximately 1.2km long and between 150-200 meters wide and follows the Clark Mountain Fault. The scale and converging datasets make this the highest-priority REE-carbonatite target. It stands out because every survey type has anomalies that coincide:

• The electrical surveys (IP and MT) indicate conductive and chargeable material at depth along the fault;

• The radiometricsshow elevated potassium and thorium, elements commonly enriched around carbonatite bodies;

• The gravitysurvey shows a high-density body of rock at depth consistent with a carbonatite intrusion and

• Surface and subsurface geochemistryshows elevated levels of rare earths, barium, strontium, calcium and phosphorus, all of which are hallmarks of carbonatite-related mineralization.

The IP, MT and gravity responses are similar to that seen at Mountain Pass, 10km to the south.

Target 1 is further strengthened by drill hole RC25-038 (described below), which sits on the eastern edge of this target area and confirmed rare earth elements downhole at around 40 meters depth. The REE-bearing rock unit intersected in RC25-038 appears to get wider as it goes deeper. With the benefit of all the merged data, new drill holes at Target 1 are positioned deeper and closer to the center of the anomaly than RC25-038.

Figure 2: East-West IP chargeability cross section showing hole RC25-038, drilled true north into the section.

Target 2: Eastern Gravity High

Target 2 is defined by a strong gravity anomaly on the eastern side of the Colosseum claim area, running roughly north-south in a ring-like structure. The gravity and electrical survey data both suggest a dense resistive body of rock buried at depth, the same kind of signal associated with carbonatite intrusions. The drill target sits west of extensive mantle derived outcrops at surface and a geochemistry carbonate anomaly at surface.

Target 3: 2200N Anomaly

The 2200N anomaly remains a high-priority target. The MT resistivity and IP chargeability responses are both exceptionally broad in lateral extent, and additional modelling is required to identify the optimal drill entry points before committing capital. A dedicated drill program will follow once additional targeting refinement work is complete.

Figure 3: Oblique view looking NW with magnetics (2D plan) and IP section lines. Main focus is Target 1, looking down the plunge of where there is a coincident remnant magnetic and IP chargeability anomaly.

Drilling Confirms Mantle-Derived REE System and Advances Targeting Model

Drill hole RC25-038 represents the first drill intersection of anomalous rare earth element at the Colosseum Project and was specifically designed to test early indications of REE prospectivity using broad-based geophysical (MT) targeting. The hole was collared at the contact of the Clark Mountain Fault in an area with no exposed fenite alteration at surface, demonstrating that anomalous REE is present in the subsurface beyond previously mapped alteration zones.

Laboratory analysis of the samples shows a geochemical fingerprint that points clearly to a deep, mantle-sourced carbonatite system. Chondrite-normalized REE plots show a smooth lanthanide distribution profile with no negative europium anomaly. This pattern is characteristic of mantle-derived alkaline magmatic systems and matches the REE signature of the Mountain Pass carbonatite. The absence of a negative europium anomaly is consistent with a deep mantle-derived REE system. This profile is exactly the profile that would be expected on the margins of a carbonatite body.

Alongside the rare earths, the samples returned elevated levels of barium, strontium, calcium, phosphorus, thorium and uranium, with associated potassium-rich alteration in the surrounding rock (see Appendix 2). This combination of elements is a well-recognized geochemical fingerprint of carbonatite systems worldwide, and mirrors the signatures documented at Mountain Pass and other major carbonatite-hosted REE deposits.

Figure 4: Chondrite Normalised Plot of the four samples collected in RC25-038 showing a smooth, lanthanide distribution profile with no negative europium anomaly, characteristic of mantle-derived alkaline magmatic systems.

RC25-038 sits on the eastern edge of Target 1, on the outer margin of the geophysical anomaly. Now that the complete combined dataset is available, it is clear that rather than testing the center of the carbonatite system, the hole grazed its edge. The main carbonatite body is believed to sit deeper and further to the east and will be drill tested accordingly.

Figure 5: REE drill hole RC25-038 in relation to IP chargeability anomaly. The hole was drilled true north and just grazed the edge of Target 1. There were pyrite rich zones at the bottom of hole, proximal to Target 1.

Lack of Oxidized Sulphur at Surface Points to Intact System That Hasn’t Leaked

At Colosseum, detailed surface sampling and review of historical data have not identified elevated sulphate or related oxyanions above Target 1. This lack of oxidized sulfur leakage is consistent with a sulfide system that remains largely intact at depth.

In practical terms, it suggests that the primary sulfide assemblage associated with the carbonatite system has not been extensively weathered nor chemically depleted over geological time. The data supports a model in which the core of the hydrothermal system remains preserved beneath cover.

For an alkaline-carbonatite setting, this is a constructive outcome. Primary rare earth mineralization in these systems is commonly associated with sulfide-bearing intrusive phases. If significant oxidation and dispersion had occurred, one would expect a broad supergene geochemical footprint at surface. The absence of such a signature reduces the likelihood that the system has been substantially “bled off” and increases the probability that the intrusion and associated sulfide-hosted REE mineralization remain preserved at depth.

When considered alongside the coincident gravity, magnetic, electrical and radiometric anomalies, and the mantle-derived REE signature in RC25-038, the geochemical stability at surface adds another line of evidence supporting the interpretation of a coherent, preserved carbonatite system. This interpretation further underpins the rationale for the planned deeper diamond drilling program targeting the interpreted core of Target 1.

Lack of Sodium Indicates Carbonate Minerals – Increases Support for Carbonatite

Additional insight has been provided from major element geochemistry, including plotting samples on a Ca-K-Na ternary diagram. The samples display negligible sodium and are strongly enriched in calcium. In the absence of sodium, the calcium is unlikely to be hosted in plagioclase or other sodic silicate minerals. Instead, the geochemical signature indicates that calcium is predominantly present within carbonate minerals. This interpretation is supported by the position of the most calcium-rich samples, which plot compositionally between dolomite and ankerite, suggesting a Mg-Fe-bearing carbonate assemblage rather than simple calcite.

This distinction is important. Carbonate minerals such as dolomite and ankerite are commonly developed in hydrothermal systems associated with alkaline and carbonatite intrusions. The identification of a dolomite-ankerite compositional trend provides geochemical support for the field observation that the rocks may represent a carbonate-rich intrusive or carbonate-dominant alteration phase.

When considered together with the absence of surface oxyanion leakage and the coincident geophysical anomalies, the carbonate-dominant chemistry is consistent with a coherent and potentially preserved intrusive system at depth, rather than superficial or surficial carbonate development.

Carbonatite Drill Program Designed

A 12-hole diamond drill program has been approved across Targets 1 and 2. The holes are designed to test both targets from multiple angles and at a range of depths, with several planned to go beyond 750 meters to reach the bodies of rock generating the geophysical signals.

At Target 1, the holes are positioned deeper and closer to the center of the system than RC25-038, following the indication from that hole that the REE-bearing rock gets wider as it goes deeper.

At Target 2, the holes are designed to test the buried body of rock identified by the gravity and electrical surveys on the eastern side of the claim, a zone that has never previously been drilled.

This press release has been authorized for release by the Board of Dateline Resources Limited.

For more information, please contact:

Stephen Baghdadi
Managing Director
+61 2 9375 2353

Andrew Rowell
Corporate & Investor Relations Manager
+61 400 466 226
a.rowell@dtraux.com
www.datelineresources.com.au

Follow Dateline on socials:
X – @Dateline_DTR
Truth Social – @dateline_resources
LinkedIn – dateline-resources
YouTube – @dateline.resources

About Dateline Resources Limited

Dateline Resources Limited (ASX:DTR)(OTCQB:DTREF)(FSE:YE1) is an Australian company focused on mining and exploration in North America. The Company owns 100% of the Colosseum Gold-REE Project in California.

The Colosseum Gold Mine is located in the Walker Lane Trend in East San Bernardino County, California. On 6 June 2024, the Company announced to the ASX that the Colosseum Gold mine has a JORC-2012 compliant Mineral Resource estimate of 27.1Mt @ 1.26g/t Au for 1.1Moz. Of the total Mineral Resource, 455koz @ 1.47/t Au (41%) are classified as Measured, 281koz @1.21g/t Au (26%) as Indicated and 364koz @ 1.10g/t Au (33%) as Inferred.

On 23 May 2025, Dateline announced that updated economics for the Colosseum Gold Project generated an NPV6.5 of US$550 million and an IRR of 61% using a gold price of US$2,900/oz.

The Colosseum is located less than 10km north of the Mountain Pass Rare Earth mine. Planning has commenced on drill testing the REE potential at Colosseum.

Dateline also owns 100% of the high-grade Argos Strontium Project, also located in San Bernardino County, California. Argos is reportedly the largest strontium deposit in the U.S. with previous celestite production grading 95%+ SrSO₄.

Forward-Looking Statements

This announcement may contain “forward-looking statements” concerning Dateline Resources that are subject to risks and uncertainties. Generally, the words “will”, “may”, “should”, “continue”, “believes”, “expects”, “intends”, “anticipates” or similar expressions identify forward-looking statements. These forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from those expressed in the forward-looking statements. Many of these risks and uncertainties relate to factors that are beyond Dateline Resources’ ability to control or estimate precisely, such as future market conditions, changes in regulatory environment and the behavior of other market participants. Dateline Resources cannot give any assurance that such forward-looking statements will prove to have been correct. The reader is cautioned not to place undue reliance on these forward-looking statements. Dateline Resources assumes no obligation and does not undertake any obligation to update or revise publicly any of the forward-looking statements set out herein, whether as a result of new information, future events or otherwise, except to the extent legally required.

Competent Person Statement

Sample preparation and any exploration information in this announcement is based upon work reviewed by Mr. Greg Hall who is a Chartered Professional of the Australasian Institute of Mining and Metallurgy (CP-IMM). Mr. Hall has sufficient experience that is relevant to the style of mineralization and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves” (JORC Code). Mr. Hall is a Non-Executive Director of Dateline Resources Limited and consents to the inclusion in the report of the matters based on this information in the form and context in which it appears.

Company Confirmations

The Company confirms it is not aware of any new information or data that materially affects the information included in the announcements dated 23 October 2024 with regard to the Colosseum MRE and 23 May 2025 with regard to Colosseum Project Economics. Similarly, the Company confirms that all material assumptions and technical parameters underpinning the estimates and the forecast financial information referred to in those previous announcements continue to apply and have not materially changed.

SOURCE: Dateline Resources Limited

View the original press release on ACCESS Newswire

SAN BERNARDINO, CA / ACCESS Newswire / February 12, 2026 / Dateline Resources Limited (ASX:DTR)(OTCQB:DTREF)(FSE:YE1) (Dateline or the Company) is pleased to report results from diamond core hole CM25-41 at its 100%-owned Colosseum Gold and Rare Earth Element (REE) Project in San Bernardino County, California. The hole was drilled in the northeast extension of the North Pipe breccia system, an area beyond the currently defined mineral resource boundary that has been progressively delineated through the Company’s 2025 drilling program.

CM25-41 intersected 149.65 metres grading 1.39 g/t Au from surface to end-of-hole, including a high-grade zone of 55.2m @ 2.83 g/t Au from surface. The hole terminated in mineralisation with the final bottom-of-hole sample returning approximately 1 g/t Au, confirming the gold-bearing breccia pipe remains open at depth.

Dateline’s Managing Director, Stephen Baghdadi, commented:

“Colosseum continues to deliver positive results as we work systematically across the project. This latest drilling advances our geological understanding and reinforces the view that there is further value to be unlocked beyond those areas already defined. We are progressing the next phase of work in a disciplined way, with the objective of determining how these results can translate into longer-mine life options for the project.”

Northeast Extension – Progressive Definition

The northeast extension of the North Pipe has been progressively defined through a series of reverse circulation (RC) and diamond core holes (DD) drilled during 2025. The latest result from CM25-41 adds further confidence to gold grades within this emerging zone and supports the continuity of mineralization along the northeast portion of the breccia system.

Key intercepts from the northeast extension drilling program reported to date include:

Hole	From (m)	To (m)	Length (m)	Au (g/t)	Comments
CM25-41	0.0	149.65	149.65	1.39	NEW – This release
Incl.	0.0	55.2	55.2	2.83	High-grade core
RC25-035	0.0	295.64	295.64	1.04	Reported 12 Jan 2026
Incl.			38.10	2.04
RC25-037	0.0	105.15	105.15	1.24	Reported 12 Jan 2026
Incl.			53.34	1.45
RC25-039	0.0	205.73	205.73	0.88	Reported 12 Jan 2026
Incl.			21.33	1.81
RC25-036	0.0	300.21	300.21	0.66	Reported 12 Jan 2026
Incl.			32.00	1.24
RC25-034	0.0	297.17	297.17	0.68	Reported 12 Jan 2026
Incl.			33.53	1.25

Note: Intercepts reported above a lower cut-off grade of 0.1 g/t Au. No upper cut-off grade has been applied. All lengths are downhole lengths. Previously reported results sourced from ASX announcement dated 12 January 2026.

CM25-41 ended in ore-grade mineralization, indicating drilling has not yet defined the limits of this system. With the larger diamond drill rigs now mobilizing, the Company intends to fully test the extent of this zone.

Dateline is working to determine if this newly defined northeast extension can extend the mine life beyond the approximately eight and a half-year open-pit operation outlined in the May 2025 Scoping Study. Any additional resources delineated in this section could potentially prolong the mine life, with the opportunity for an underground mining phase to follow after open-pit mining is completed.

Next Steps

To fully delineate the potential of the northeast extension, larger-capacity diamond core drill rigs will be used to:

• Test the deeper portions of the North Pipe breccia system, beyond the ~300m depth reached,

• Provide continuous core samples for detailed geological analysis,

• Better delineate the geometry and orientation of the breccia pipe at depth and along strike, and,

• Assist in the assessment of the Bankable Feasibility Study.

Resource Expansion and Mine Life Context

The Colosseum Gold-REE Project currently hosts a JORC 2012-compliant Mineral Resource of 27.1Mt @ 1.26 g/t Au for 1.1Moz, of which over 67% is classified as Measured and Indicated. The May 2025 Scoping Study outlined an open-pit operation with an initial mine life of approximately 8.5 years, generating an IRR of 61% at a gold price of US$2,900/oz.

The northeast extension drilling results reported herein and in previous announcements demonstrate gold mineralization extending beyond the current mineral resource boundary. The Company notes the intersected grades in the northeast extension area are higher than average mineral resource grade in several instances and the system remains open.

In particular, the presence of high-grade zones within the broader mineralized envelopes (for example, 55.2m @ 2.83 g/t Au within CM25-41) may present an opportunity for a follow-up underground mining phase to selectively extract higher-grade material after completion of open-pit operations, thereby potentially extending the productive life of the project.

The Company will continue to update the market as further results become available.

This press release has been authorized for release by the Board of Dateline Resources Limited.

For more information, please contact:

Stephen Baghdadi
Managing Director
+61 2 9375 2353

Andrew Rowell
Corporate & Investor Relations Manager
+61 400 466 226
a.rowell@dtraux.com
www.datelineresources.com.au

Follow Dateline on socials:
X – @Dateline_DTR
Truth Social – @dateline_resources
LinkedIn – dateline-resources
YouTube – @dateline.resources

About Dateline Resources Limited

Dateline Resources Limited (ASX:DTR)(OTCQB:DTREF)(FSE:YE1) is an Australian company focused on mining and exploration in North America. The Company owns 100% of the Colosseum Gold-REE Project in California.

The Colosseum Gold Mine is located in the Walker Lane Trend in East San Bernardino County, California. On 6 June 2024, the Company announced to the ASX that the Colosseum Gold mine has a JORC-2012 compliant Mineral Resource estimate of 27.1Mt @ 1.26g/t Au for 1.1Moz. Of the total Mineral Resource, 455koz @ 1.47/t Au (41%) are classified as Measured, 281koz @1.21g/t Au (26%) as Indicated and 364koz @ 1.10g/t Au (33%) as Inferred.

On 23 May 2025, Dateline announced that updated economics for the Colosseum Gold Project generated an NPV6.5 of US$550 million and an IRR of 61% using a gold price of US$2,900/oz.

The Colosseum is located less than 10km north of the Mountain Pass Rare Earth mine. Planning has commenced on drill testing the REE potential at Colosseum.

Dateline also owns 100% of the high-grade Argos Strontium Project, also located in San Bernardino County, California. Argos is reportedly the largest strontium deposit in the U.S. with previous celestite production grading 95%+ SrSO₄.

Forward-Looking Statements

This announcement may contain “forward-looking statements” concerning Dateline Resources that are subject to risks and uncertainties. Generally, the words “will”, “may”, “should”, “continue”, “believes”, “expects”, “intends”, “anticipates” or similar expressions identify forward-looking statements. These forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from those expressed in the forward-looking statements. Many of these risks and uncertainties relate to factors that are beyond Dateline Resources’ ability to control or estimate precisely, such as future market conditions, changes in regulatory environment and the behavior of other market participants. Dateline Resources cannot give any assurance that such forward-looking statements will prove to have been correct. The reader is cautioned not to place undue reliance on these forward-looking statements. Dateline Resources assumes no obligation and does not undertake any obligation to update or revise publicly any of the forward-looking statements set out herein, whether as a result of new information, future events or otherwise, except to the extent legally required.

Competent Person Statement

Sample preparation and any exploration information in this announcement is based upon work reviewed by Mr. Greg Hall who is a Chartered Professional of the Australasian Institute of Mining and Metallurgy (CP-IMM). Mr. Hall has sufficient experience that is relevant to the style of mineralization and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves” (JORC Code). Mr. Hall is a Non-Executive Director of Dateline Resources Limited and consents to the inclusion in the report of the matters based on this information in the form and context in which it appears.

Company Confirmations

The Company confirms it is not aware of any new information or data that materially affects the information included in the announcements dated 23 October 2024 with regard to the Colosseum MRE and 23 May 2025 with regard to Colosseum Project Economics. Similarly, the Company confirms that all material assumptions and technical parameters underpinning the estimates and the forecast financial information referred to in those previous announcements continue to apply and have not materially changed.

SOURCE: Dateline Resources Limited

View the original press release on ACCESS Newswire

Infill Geophysics Surveys Completed at Colosseum Project

SAN BERNARDINO, CALIFORNIA / ACCESS Newswire / February 9, 2026 / Dateline Resources Limited (ASX:DTR)(OTCQB:DTREF)(FSE:YE1) is pleased to announce the completion of infill gravity, magnetic and radiometric surveys at its 100%-owned Colosseum Gold and Rare Earth Project in California, USA. This follows the completion of an induced polarisation (IP) survey across the project in December 2025.

All newly acquired geophysical datasets are being integrated to progressively sharpen drill targeting across the key structural corridors identified by earlier programs. This work is expected to transition the Company from broad-based target definition to highly focused drill testing. Diamond core drilling rigs are scheduled to begin arriving on site next week.

Infill Geophysics Program – Scope and Completion

The infill program completed was comprised of:

• A high-resolution ground gravity survey consisting of 543 stations collected on a 100 m × 100 m grid, providing detailed density coverage across the central project area.

• A magnetic and radiometric survey at 50m line spacing covering approximately 8.6 km² delivering high-resolution magnetic and radiometric datasets.

The surveys were designed to improve resolution over areas where earlier IP and MT data identified deep chargeability and conductivity features interpreted to be structurally controlled and potentially associated with gold mineralisation and/or REE-bearing carbonatite intrusions.

Dateline’s Managing Director, Stephen Baghdadi, commented:

“The data continues to support the presence of a large mineral system, with deep structural and sulphide-hosted features interpreted as mineralising plumbing extending beyond the known near-surface ore zones. The integration of these high-quality geophysical datasets is a deliberate step to sharpen drill targeting and maximise the effectiveness of the forthcoming drilling campaign. With several targets interpreted at depths of approximately 500-1,000 metres, this approach ensures that drilling is highly focused, technically informed and capital-efficient as the Company advances into deeper, more technically demanding drill testing.”

Figure 1: Preliminary TMI Magnetics from the recently completed survey at Colosseum. The colours represent variations in magnetic susceptibility within the shallow subsurface. Red and pink zones indicate magnetic highs reflecting magnetite bearing intrusive rocks, altered breccia bodies. Blue zones indicate magnetic lows point to zones of destruction or alteration of magnetite. Encouragingly, the magnetic data is aligned with the magneto-telluric and IP surveys as disclosed to the market on January 27, 2026

Figure 2: Preliminary Bouguer Gravity from the recently completed survey at Colosseum. The red and pink zones indicate higher density rocks, whilst the green and blues indicate lower density rocks (such as sediments). The strong gravity high on the eastern side points to dense intrusive or altered bodies at depth (alkaline intrusive rocks, breccia pipe roots, or carbonatite related material). There also appears to be a sharp N-S gravity gradient that aligns with the Clark Mountain fault.

Figure 3: Preliminary Radiometrics (Total Count) from the recently completed survey at Colosseum. Dose rate represents the combined gamma radiation from potassium, thorium, and uranium in the upper soil and rock profile. Elevated total counts reflect enrichment in potassium, thorium, and uranium associated with alkaline intrusive rocks and hydrothermal alteration, highlighting structural corridors and targets prospective for gold and rare earth mineralisation.

Data Integration and Interpretation

The complete geophysical dataset, including the new infill gravity, magnetic and radiometric data together with previously completed IP and MT surveys, is currently being reviewed and integrated by Mitre Geophysics.

This integrated interpretation is focused on:

• Refining the geometry and continuity of the structures,

• Linking deep geophysical responses to mapped geology, structural features and previously identified geochemical and alteration signatures; and

• Finalising priority drill targets where multiple geophysical datasets converge.

Drilling Update

As previously advised, diamond drill rigs remain scheduled to arrive on site next week. Drill planning is progressing in parallel with the ongoing geophysical interpretation, with the objective of testing the highest-priority targets identified from the integrated dataset.

Further updates will be provided as interpretation is finalised and drilling commences.

This press release has been authorized for release by the Board of Dateline Resources Limited.

For more information, please contact:

Stephen Baghdadi
Managing Director
+61 2 9375 2353

Andrew Rowell
Corporate & Investor Relations Manager
+61 400 466 226
a.rowell@dtraux.com
www.datelineresources.com.au

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About Dateline Resources Limited

Dateline Resources Limited (ASX:DTR)(OTCQB:DTREF)(FSE:YE1) is an Australian company focused on mining and exploration in North America. The Company owns 100% of the Colosseum Gold-REE Project in California.

The Colosseum Gold Mine is located in the Walker Lane Trend in East San Bernardino County, California. On 6 June 2024, the Company announced to the ASX that the Colosseum Gold mine has a JORC-2012 compliant Mineral Resource estimate of 27.1Mt @ 1.26g/t Au for 1.1Moz. Of the total Mineral Resource, 455koz @ 1.47/t Au (41%) are classified as Measured, 281koz @1.21g/t Au (26%) as Indicated and 364koz @ 1.10g/t Au (33%) as Inferred.

On 23 May 2025, Dateline announced that updated economics for the Colosseum Gold Project generated an NPV6.5 of US$550 million and an IRR of 61% using a gold price of US$2,900/oz.

The Colosseum is located less than 10km north of the Mountain Pass Rare Earth mine. Planning has commenced on drill testing the REE potential at Colosseum.

Dateline also owns 100% of the high-grade Argos Strontium Project, also located in San Bernardino County, California. Argos is reportedly the largest strontium deposit in the U.S. with previous celestite production grading 95%+ SrSO₄.

Forward-Looking Statements

This announcement may contain “forward-looking statements” concerning Dateline Resources that are subject to risks and uncertainties. Generally, the words “will”, “may”, “should”, “continue”, “believes”, “expects”, “intends”, “anticipates” or similar expressions identify forward-looking statements. These forward-looking statements involve risks and uncertainties that could cause actual results to differ materially from those expressed in the forward-looking statements. Many of these risks and uncertainties relate to factors that are beyond Dateline Resources’ ability to control or estimate precisely, such as future market conditions, changes in regulatory environment and the behavior of other market participants. Dateline Resources cannot give any assurance that such forward-looking statements will prove to have been correct. The reader is cautioned not to place undue reliance on these forward-looking statements. Dateline Resources assumes no obligation and does not undertake any obligation to update or revise publicly any of the forward-looking statements set out herein, whether as a result of new information, future events or otherwise, except to the extent legally required.

Competent Person Statement

Sample preparation and any exploration information in this announcement is based upon work reviewed by Mr. Greg Hall who is a Chartered Professional of the Australasian Institute of Mining and Metallurgy (CP-IMM). Mr. Hall has sufficient experience that is relevant to the style of mineralization and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting Exploration Results, Mineral Resources and Ore Reserves” (JORC Code). Mr. Hall is a Non-Executive Director of Dateline Resources Limited and consents to the inclusion in the report of the matters based on this information in the form and context in which it appears.

Company Confirmations

The Company confirms it is not aware of any new information or data that materially affects the information included in the announcements dated 23 October 2024 with regard to the Colosseum MRE and 23 May 2025 with regard to Colosseum Project Economics. Similarly, the Company confirms that all material assumptions and technical parameters underpinning the estimates and the forecast financial information referred to in those previous announcements continue to apply and have not materially changed.

SOURCE: Dateline Resources Limited

View the original press release on ACCESS Newswire