VANCOUVER, BRITISH COLUMBIA (By GoldMining, 12.Nov.2025) Words: 546) — GoldMining Inc. reported the Brazilian National Mining Agency (Agência Nacional de Mineração) (ANM) has granted a renewal of exploration claim 866032/2008, also known as the Colíder project, effective 30 Oct. 2025. The renewal is valid for 3 years, during which time the company shall prepare and present a final exploration report.
The project consists of a single 10,000 hectare (100 km2) exploration claim that was obtained by a wholly owned subsidiary of the company in 2011 and is a component of the portfolio of exploration properties owned by the company in Brazil. The company had originally applied for a renewal of the exploration claim in 2013, and after an initial denial and appeal in the same year, followed by an extended appeal period, the claim has now been restored to active exploration status.
Colíder is located in Mato Grosso state, the third largest state in Brazil, located in the central-west of Brazil. The capital, Cuiabá, is a travel hub that dates back to the 18th-century gold rush. The Colíder Project is part of the Alta Floresta gold belt, an area known for extensive alluvial gold mining, particularly in the 1980s, extending for approximately 500km along trend. In addition to Colíder, GoldMining also owns the Batistão gold project located 55km to the northeast of the Colíder project, which is comprised of 1 property located 25km southwest of the city of Peixoto de Azevedo and consists of one exploration permit totaling 5,107 hectare.
The Colíder project area was initially explored by Western Mining Corporation in the 1990’s, which completed a systematic exploration work program including geological mapping, geophysical surveys (magnetics and induced polarization), stream sediment and soil sampling, and auger and reverse circulation (“RC”) drilling. The company is currently compiling, validating and interpreting the historic exploration results. A total of 29 RC holes (for 1,847m) are reported to have been drilled on the property, for which the company is currently validating and conducting basic quality assurance including collating and checking original assay certificates. Systematic grid soil sampling was historically completed over approximately 13% of the concession, demonstrating elevated gold ± copper in soils associated with a large discrete magnetic high anomaly in the centre of the concession. Historic exploration also reported surface rock grab exhibiting gossan and sulphide mineralization overprinting granitoid intrusive rocks, and also select assay values of up to 11.2 g/t gold along with anomalous copper, lead, molybdenum and zinc. The company initially plans to conduct systematic compilation of the historic data sets and exploration activities including initial ground truthing field work.
Alastair Still, Chief Executive Officer of GoldMining, commented: “We’re pleased to have added the Colíder concession to our Brazil exploration portfolio of highly prospective gold (± copper) projects. Colíder lies within the emerging and underexplored Alta Floresta Gold Belt in Mato Grosso State, and our initial analysis of the historic data sets suggests that Colíder is highly prospective for bedrock gold and copper mineralization. Colíder provides additional optionality in an already extensive portfolio of prospective properties in central Brazil, and we look forward to the compilation and validation of historic exploration results, followed by planning for the first stages of systematic exploration data sets across the property.”
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