A transformative portfolio pivot dominated mining news, with South32 agreeing to offload its entire aluminium value chain to Alcoa for up to US$5.6bn while simultaneously greenlighting a copper project, the most significant corporate transaction in the sector today. Elsewhere, earnings upgrades, drill results, and feasibility study progress kept the small-cap end of the market busy, with Goldplat delivering a material profit upgrade on the back of high gold prices and strong recovery volumes.
South32 offloads aluminium chain to Alcoa, pivots to copper and base metals
South32 Di (LSE:S32) agreed to sell its aluminium value chain to Alcoa for up to US$5.6bn, receiving US$3.1bn in upfront cash with the remainder contingent on future milestones. The transaction strips out the group's aluminium exposure entirely, reshaping the portfolio decisively around base and precious metals. Shares surged 11.97% to 228.2p on the announcement.
Alongside the disposal, South32 greenlighted a new copper project, signalling where chief executive Graham Kerr intends to deploy the proceeds. The deal marks one of the more consequential portfolio restructurings in the diversified mining sector in recent years, with Alcoa acquiring a ready-made, integrated aluminium operation and South32 shedding a capital-intensive business in favour of metals with stronger long-term demand profiles.
Goldplat profit set to materially beat market expectations
Goldplat (AIM:GDP) issued a positive trading update, stating that full-year profit is expected to materially exceed current market expectations. High gold prices combined with strong recovery volumes across its operations drove the upgrade, reinforcing the leverage that gold recovery businesses carry to the prevailing gold price environment. The shares rose 6.35% to 16.75p.
Rainbow Rare Earths simplifies Phalaborwa flowsheet in DFS advance
Rainbow Rare Earths (AIM:RBW) reported meaningful progress on the definitive feasibility study for its Phalaborwa rare earth project in South Africa, completing major test work that has both simplified the processing flowsheet and improved overall operability. CEO George Bennett said the work had optimised capital and operating costs, a critical step for a project seeking to attract project finance. The shares added 2.33% to 22.0p.
Rockfire Resources intersects 52.3g/t germanium at Molaoi
Rockfire Resources (AIM:ROCK) reported high-grade results from its latest drill hole at the Molaoi zinc-lead-silver-germanium project in Greece, with assays returning 52.3g/t germanium alongside zinc, silver, and lead values. Chief executive David Price noted that the geological model continues to hold up under drilling, a positive indicator for resource definition work ahead. The shares edged up 1.13% to 0.134p.
Amigo Resources defines multiphase carbonatite system in Tanzania
Amigo Resources (AIM:AMGO) announced that geological mapping at its Tanzania rare earth project has identified a multiphase carbonatite system, a structural finding that broadens the prospectivity of the licence area. Laboratory analyses from the mapping programme are ongoing, with results to be integrated into a geological model ahead of drill target generation. Executive Chairman Craig Ransley said the next phase of work will be guided by those combined datasets. The shares were unchanged at 2.375p.
Oriole Resources step-out drilling extends MB01-S gold deposit
Oriole Resources (AIM:ORR) reported that step-out drilling at its MB01-S gold deposit in Cameroon has extended mineralisation both to the west and south of the known resource envelope. Chief executive Martin Rosser said the results should lead to an expansion of the current mineral resource estimate when it is reported later in the third quarter, with the company awaiting two final assay results before remodelling work begins. The shares slipped 2.7% to 0.36p.
