Latest Resource Estimation News

American Rare Earths has reported broad, near-surface rare earth mineralisation from the first six holes of its 2026 feasibility drilling program in Wyoming. The results are encouraging for geological continuity, but they cover only part of the program and do not yet represent a new resource estimate.

BOA Resources has returned high-grade copper intersections from all six initial RC holes at Ricci Lee, including 14 metres at 2.49% copper and 15 metres at 2.25%. Assays from 40 further RC holes and 92 aircore holes across five other prospects remain pending.

Tambourah Metals has tightened drilling across its Tambourah King gold lode, returning several encouraging intersections ahead of a planned maiden resource estimate. Shallow results at Western Chief add a second exploration thread, although the system remains lightly tested at depth.

White Cliff Minerals has reported broad, bornite-dominant mineralisation in the first-ever drilling at Bornite Hills, but laboratory assays are still weeks away. The discovery adds a new target to the Rae Copper Project, alongside a sediment-hosted copper horizon now traced across a much larger area.

Olympio Metals has started a roughly 1,500-metre maiden diamond drilling program at its Jacknife silver project in Idaho, targeting mineralisation linked to more than 3.2 million ounces of historical silver production. The campaign is significant, but the company must still verify old data before it can establish a JORC-compliant resource.

New assays from Sinclair Gold’s Mt Henry project extend mineralisation beyond the current 1.8Moz resource at both Mt Henry and Selene. Five rigs are continuing step-out drilling, with 33 holes outside the resource footprint still awaiting assays.

Mamba Exploration has confirmed 165 historical copper intersections across a 3km corridor at its 70%-owned Meeka East project, supporting a new felsic volcanic exploration model. The company plans further mapping, geophysics and drilling, although the historical data is not sufficient to define a mineral resource.

Pursuit Minerals has started its first diamond hole at the Demasía tenement, testing whether lithium-bearing brines extend beyond the existing 1.264 million tonne LCE resource at Rio Grande Sur. Early packer tests recovered brine at shallow depths, but lithium assays are still pending.

BPM Minerals has begun its first-ever drilling at the 6km Bonnie and Clyde gold-in-soil anomaly in Western Australia, launching a 10,000-metre campaign targeting possible Tropicana-style mineralisation. The exploration upside remains untested, with assays from Bonnie and Clyde and Beachcomber expected from late 2026 into early 2027.

TechGen Metals has emerged from a year of lower losses and stronger cash reserves with three gold projects lined up for drilling, while copper and base-metal targets remain in the portfolio. The funding runway is improved, but the August capital raising and new director securities add a material dilution question.

WA1 Resources has ended FY26 with a larger, higher-confidence Luni niobium resource, encouraging processing results and A$123.8 million in cash. The project now moves towards a targeted Q4 CY2026 Pre-Feasibility Study, with permitting, funding and commercial viability still ahead.

Great Boulder Resources has used FY2026 to make the leap from gold explorer toward producer, acquiring Peak Hill and securing a 481,000-ounce resource alongside its 1.02 million-ounce Side Well project. The strategic shift came with a A$9.93 million loss, a heavily expanded share count and a clear near-term test: whether 40,000 metres of drilling can support development by late 2027.