Magna Terra samples up to 1.2% Cu, 2.8 g/t Ag at Humber

Mr. Lewis Lawrick reports MAGNA TERRA RECEIVES COPPER ASSAYS UP TO 1.26% CU FROM NEW DISCOVERY AT THE HUMBER COPPER-COBALT PROJECT IN NEWFOUNDLAND; EXPANDS ZONE OF SURFACE MINERALIZATION TO 1 KILOMETRE AND ACQUIRES ADDITIONAL CLAIMS Magna Terra Minerals Inc. has received initial assays from prospecting at its recently discovered zone of copper mineralization on the 100-per-cent-owned Humber copper-cobalt project located in western Newfoundland (see news release dated July 17, 2025). A total of 61 rock samples were collected during an initial phase of prospecting with five samples selected for rush analysis. The rushed rock float and outcrop samples returned between 0.07 per cent and 1.26 per cent copper and between 0.2 and 2.8 grams per tonne silver. Additional prospecting and geological mapping since the previous news release have expanded the lateral extent of copper mineralization to a minimum strike length of 1.0 kilometre. Analytical results for the remaining 56 samples are pending and will be reported in a future news release. The discovery of copper mineralization in bedrock is located on the east end of the Hughes Lake trend. Copper mineralization from outcrop and subcrop rock grab samples comprise between 0.5 and 5 per cent combined, fracture-controlled, foliation parallel stringers and disseminated, malachite, bornite and chalcopyrite hosted within dolomitized limestone and adjacent altered clastic sedimentary rocks that mark the first occurrence of copper noted on this underexplored property. Initial fieldwork consisting of prospecting, geological mapping and the collection of 1,700 soil samples is focused on following up on the Hughes Lake trend where an eight-kilometre-long anomalous zone of copper and cobalt in historic soil samples is coincident with mafic volcanic rocks of the Hughes Lake complex and associated magnetic rocks. The company is also pleased to announce that, based on these results, it has acquired an additional four mineral licences (112 claims) comprising 2,800 hectares adjacent to and contiguous with the Humber project. The Humber project now comprises a total of 43,475 hectares. Magna Terra would like to acknowledge and thank both the Province of Newfoundland and Labrador and the Atlantic Canada Opportunities Agency for their financial assistance through the junior exploration assistance program for work on the Humber copper-cobalt project. "It is very encouraging to encounter surface copper values of up to 1.26 per cent Cu so early into the initial exploration program on the Humber project. This zone of in situ Cu mineralization has now been expanded to a minimum strike length of 1,000 metres. This important discovery supports our concept that the Humber project has the potential to host sediment-hosted stratiform copper deposits, and our exploration team is currently assessing additional targets across the now expanded property. We look forward to updating shareholders with results from additional and ongoing work on the project that includes a regional airborne magnetic and electromagnetic survey and regional soil sampling. "At the Humber copper-cobalt project, we have assembled a rare, first-mover, district-scale project opportunity that will continue to leverage our expertise. We are eager to demonstrate the project's prospectivity focused on critical metal discovery and the value we believe this project brings to our investors," said Lew Lawrick, president and chief executive officer, Magna Terra. Humber project highlights: Potential for discovery of significant copper-cobalt deposits; Host to regionally anomalous copper, cobalt, silver and lead plus or minus gold, molybdenum, arsenic and antimony lake sediments; Eight-plus-kilometre Hughes Lake copper-cobalt trend; Analogous to the Kalahari copper belt, Namibia and Botswana; Central African copper belt, Zambia and the Democratic Republic of the Congo; and the Kupferschiefer belt, Poland; Globally, these sediment-hosted stratiform copper deposit types represent 20 per cent of Cu production and 60 per cent of Co production; District-scale land package now comprising 43,475 hectares; Located within the premier mining jurisdiction of Newfoundland and Labrador; Year-round accessibility with road access to the majority of the project; First-mover advantage in a previously unrecognized area of exploration potential; and Acquired through staking and cost-effective acquisition and with no underlying royalties or option payments. Lake sediment geochemistry and global analogues The project is underlain by rocks of the sedimentary Humber Arm allochthon and adjacent plutonic and volcanic Hughes Lake complex, which is centred on a series of anomalous lake sediment samples (Davenport et al., 1996) that show regionally elevated levels of Co (up to 160 parts per million), Ag (up to 0.6 ppm), Pb (up to 84 ppm), Cu (up to 185 ppm), As (up to 142 ppm), Mo (up to 15 ppm) and Au (up to 10 ppb). An analysis of the lake sediment geochemical data through principal component analysis has indicated that the metal suite present within the project area is likely related to a black shale source as many of the anomalous lake sediments have low Ni values, which preclude association with the nearby ophiolite complexes to the immediate west. This metal signature (Cu, Co, Ag and Pb plus or minus Au, Mo, As and Sb) and geological environment are supportive of the area being host to SSC deposits. SSC deposits host 60 per cent of global cobalt production and 20 per cent of global copper production in deposits such as the Central African copper belt, which is thought to be analogous to the geological setting of the Humber copper-cobalt project. SSC deposits are often laterally continuous along bedding and contain consistent grades (1.2 to 5 per cent Cu) and large resources of byproducts Au, uranium, and platinum group and rare earth elements. The exploration potential is also underscored by the presence of base metal deposits nearby including the York Harbour and Daniels Harbour deposits located at lower stratigraphic levels of the region. Qualified person and technical disclosure This news release has been reviewed and approved by David A. Copeland, PGeo, a non-independent consultant to the company and a qualified person as defined under National Instrument 43-101 (Standards of Disclosure for Mineral Projects). All soil and rock samples collected from the current fieldwork were submitted to Eastern Analytical Ltd. in Springdale, Nfld., and analyzed for gold (30-gram fire assay) and multielement geochemistry, including elements Cu, Pb, Zn, Co and Ag (method ICP-34). All quoted soil and lake sediment samples results were compiled from historic assessment and government reports obtained from the government of Newfoundland and Labrador. The qualified person has not completed sufficient work to validate these historic results. About Magna Terra Minerals Inc. Magna Terra is a precious- and critical-metal-focused exploration company, headquartered in Toronto, Canada. Magna Terra is focused on acquiring and advancing its high-potential mineral projects in Atlantic Canada and Argentina while generating value for shareholders and minimizing shareholder dilution through option and joint venture partnerships where appropriate; leveraging its ability to explore, expand and transact projects. The company is focused on exploring its 100-per-cent-owned Humber copper-cobalt project in Newfoundland and Labrador; its 100-per-cent-owned Rocky Brook gold and critical metal project in the historic Bathurst mining camp of New Brunswick; and its 100-per-cent-owned Cape Spencer gold project in New Brunswick. In addition, the company has optioned the Great Northern project in Newfoundland to Gold Hunter Resources Inc. for total cash and share consideration of $9.5-million over a two-year period, and currently holds an approximate 28.9-per-cent equity interest in Gold Hunter. Further, the company maintains a significant precious metal exploration portfolio in the province of Santa Cruz, Argentina, which includes the Boleadora project and the Luna Roja project, which are subject to a recently announced letter of intent with Andean Metals Corp., as well as several additional district-scale drill-ready projects available for purchase or option/joint venture. We seek Safe Harbor.