A 40% lift on the 2015 estimate, with a 2022-vintage mill and decline already on site
Haranga Resources (ASX:HAR) has delivered its maiden JORC resource at the Lincoln Gold Project in California’s Mother Lode Belt, and the numbers do the talking. The estimate sits at 2.46 million tonnes at 5.1g/t for 402,000 ounces, split between Lincoln-Comet (275koz at 5.7g/t) and Medean (127koz at 4.1g/t).
That grade puts Lincoln near the top of the ASX gold development pack. Most underground gold projects in the developer universe land between 3 and 6g/t, and Lincoln sits at the upper end with indicated material at Lincoln-Comet running 6.6g/t.
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The other key fact is that this resource was delivered just ten months after Haranga acquired the project. The 2015 NI 43-101 foreign estimate sat at 286koz. The new JORC number is 40.6% bigger on a comparable cut-off, and the asset already has roughly A$90 million of prior capital sunk into it, including an 880m underground decline, a 315ktpa processing plant that ran as recently as 2022, and mining permits in hand.
Why the existing infrastructure changes the development math
Most maiden JORC resources require investors to imagine a development pathway that may take five to seven years and several hundred million dollars in capex. Lincoln is different, and that is the actual investment angle here.
The String Bean Alley decline is already 880m long with 900m of drives. The processing plant on site ran in 2022. The conditional use permit allowing gold production is in place. Capital that would normally need to be raised and spent before a single ounce is poured has, in this case, already been spent by previous owners.
We think this is what separates Lincoln from a standard high-grade exploration story. The Rapid Restart studies the company is now kicking off aim to quantify what it actually takes to bring the existing plant back to steady-state, rather than designing a greenfield operation from scratch.
The classification mix is the part bulls and bears will argue over
Of the 402,000 ounces, 91,000 sit in Indicated and 311,000 sit in Inferred. That mix matters because Inferred ounces cannot be used in a mineable reserve under JORC, so a scoping study will lean heavily on the 33% of Lincoln-Comet that is currently Indicated.
The skeptical read is that the headline 402koz flatters the picture relative to what is genuinely bankable today. Phase 2 drilling from the full decline, planned as access opens up by mid-2026, is the next test of whether more ounces can be lifted into Indicated.
Medean is entirely Inferred and the grade has actually come down from the historical 2015 number, because the company excluded some unverifiable historical underground sampling. That is the right call analytically, but Medean is a smaller contributor than the foreign estimate suggested.
South Spring Hill and the Mother Lode strike are the upside levers
Beyond the 402koz, Haranga has flagged an Exploration Target at South Spring Hill of 1.16Mt to 1.64Mt at 5.4-5.8g/t for 202koz to 308koz. Exploration Targets are not Mineral Resources and should be treated as upside, not core inventory.
The bigger story is the 6km of consolidated mineral rights along a Mother Lode belt section that has historically produced 3.4Moz. Old Lincoln, Wildman-Mahoney, and Keystone Deeps all sit within Haranga’s tenure as potential additional Exploration Targets through the second half of 2026.
The Investors Takeaway for Haranga Resources
Haranga has crossed the maiden JORC threshold with a grade profile that ranks well against ASX peers and an asset base that already includes the kind of infrastructure most explorers spend years trying to build. What it has not yet done is prove it can turn this resource into mineable inventory and fund a restart into a hot gold price environment.
The next two to three quarterlies are where that gap either closes or widens. We will be watching the Scoping Study outcomes, Phase 2 drilling from mid-2026, and the conversion of South Spring Hill to JORC compliance later in the year.
