GoldMining Intersects 400 m of Gold-Copper Mineralization at Yarumalito in Colombia

The Democratic Republic of Congo has launched a 36-month nationwide airborne geophysical and geological mapping programme aimed at expanding national geoscientific coverage from 22.27% to 46.1%, according to the Ministry of Mines and the National Geological Service of Congo. The programme, known as PC2G-RDC, will deploy eight aircraft to collect high-resolution magnetic, radiometric, gravimetric and electromagnetic data across priority regions including Kongo Central, Kwango, Kwilu, Greater Kasai and Greater Katanga. The programme is being coordinated by the National Geological Service of Congo, financed by the Fonds Minier pour les Générations Futures and executed by Spanish geophysics company Xcalibur Multiphysics Group. The expansion would increase mapped geoscientific coverage by 23.83 percentage points, more than doubling the current level. Congolese authorities estimate that less than 10% of the country has been thoroughly explored, despite the DRC already ranking as Africa’s largest copper producer and the world’s largest cobalt producer. The latest survey phase builds on geological work previously carried out in Greater Katanga, the country’s main copper-cobalt producing region, while extending systematic airborne mapping into less-explored parts of the DRC. The surveys are intended to identify geophysical anomalies and improve the geological datasets used to prioritize areas for subsequent ground-based exploration. The government expects the resulting datasets to reduce geological uncertainty for future exploration, improve identification of prospective mineral zones and strengthen the state’s ability to evaluate mineral-development opportunities. Any anomalies identified through the airborne surveys would still require ground verification, geochemical work and drilling before a mineral deposit could be established. APAnews Raising national geoscientific coverage from 22.27% to 46.1% would materially expand the amount of modern geological data available for mineral exploration in the DRC. For the copper sector, the immediate impact is on exploration efficiency rather than mine supply: improved airborne datasets can narrow target areas before companies commit capital to detailed fieldwork and drilling. Given that less than 10% of the country has been thoroughly explored, the programme could expand the longer-term pipeline of copper exploration targets beyond the established Greater Katanga Copperbelt. However, the programme itself does not add reserves or production; any prospective anomalies would require years of follow-up exploration and development before contributing to copper supply.

Canterra Minerals has announced an updated Mineral Resource Estimate for its Lundberg copper-zinc deposit, part of the company’s 100%-owned Buchans Project in Newfoundland, Canada, reporting a 55% increase in Indicated resource tonnage to approximately 26.1 million mt. The updated Indicated resource totals 26.08 million mt grading 0.36% copper, 1.31% zinc, 0.56% lead, 5.02 g/t silver and 0.06 g/t gold. This compares with 16.79 million mt grading 0.42% copper in the previous 2019 estimate. The updated Indicated resource contains approximately 94,800 mt of copper, 341,600 mt of zinc and 146,200 mt of lead. Contained copper-equivalent increased by 34% to approximately 226,200 mt compared with the previous estimate. The updated estimate incorporates 4,779 metres of drilling completed since Canterra acquired the project in 2024, alongside an optimized pit shell based on updated metal-price assumptions. Approximately 97% of the reported Mineral Resource tonnage is classified as Indicated, with the remainder classified as Inferred. Canterra said recent exploration has extended mineralisation to the northeast and northwest of the deposit and identified additional massive sulphide mineralisation in the Two Level zone. Results from approximately 6,000 metres of additional drilling remain pending, with further reporting expected through the remainder of 2026 and into 2027. SMM Analysis: The 55% increase in Lundberg’s Indicated resource tonnage and 34% increase in contained copper-equivalent materially expand the scale of the deposit. However, the average Indicated copper grade declined from 0.42% in the 2019 estimate to 0.36% in the latest resource, making future technical work important in assessing processing requirements and project economics. Attention will now turn to the outstanding drilling results and further evaluation of the deposit’s development potential. The updated resource represents in-situ mineralisation rather than economically recoverable copper production.

AusQuest (ASX:AQD) has released results of a Controlled Source Audio-frequency Magnetotelluric (CSAMT) survey at its 100%-owned Cangallo porphyry copper-gold project in southern Peru, carried out by Quantec Geoscience. The survey outlines an interpreted mineralised porphyry footprint of at least 2.5 km by 1 km and identifies two additional high-priority targets east and west of the known system whose resistivity signatures resemble the main Cangallo porphyry. Deeper low-resistivity anomalies (250-400 ohm-metres) beyond 500 m at the northern and southern margins point to untested porphyry centres now ranked as priority drill targets. Cangallo spans about 60 km2 near the coast; prior RC drilling confirmed mineralisation over 1,500 m of strike, 250-500 m wide and beyond 400 m depth, with broad intervals around 0.5% copper. Follow-up drilling begins once Stage 4 permits are secured.