Germanium Mining Corp. Expands Lac du Km 35 Property to Enhance Exploration Potential

VANCOUVER, BRITISH COLUMBIA — June 3, 2026 — Leads & Copy — GERMANIUM MINING CORP. (“GERMANIUM MINING”, “GMC” OR THE “COMPANY”) (CSE: GMC; OTCQB: EMSKF; FSE: YW0) has strategically expanded its 100% owned Lac du Km 35 Germanium Property by staking an additional 18 mineral claims, adding 995 hectares (9.95 km2) to its existing holdings. The consolidated property now spans 99 contiguous mineral claims covering 54.8 km2, incorporating the most prospective areas for germanium exploration. These new claims are situated immediately north of the Laganière Germanium showing area, creating a strategic expansion zone for the upcoming 2026 exploration season.

Mario Pezzente, Chief Executive Officer, stated that the expansion was executed ahead of the active 2026 exploration season to accommodate potential discoveries contiguous to the north of the Laganière showing. This showing hosts the highest-grade Germanium sample recorded in the Province of Quebec at 186 ppm. Germanium Mining Corp. is preparing to launch a multi-stage exploration program focused on making new Germanium discoveries within this highly prospective critical metal project. The company aims to unlock strategic resources in stable jurisdictions to bolster a more secure and resilient North American supply chain.

The 2026 exploration program will feature a highly sensitive airborne magnetic survey and a ground electromagnetic survey. These surveys are designed to identify potential Germanium occurrences associated with lower conductivity silver-zinc mineralization. The objective is to pinpoint additional shear zones and electromagnetic anomalies for subsequent sampling and assaying. Features of interest, including shear zones and magnetic and electromagnetic anomalies, will be verified in the field early in the 2026 exploration program. The immediate vicinity of the Laganière showing will undergo further exploration, sampling, and assaying to define diamond drill targets for testing in the Fall of 2026.

The initial phase of diamond drilling is planned to target potential “discovery holes.” This campaign is slated to comprise 6 to 10 holes, totaling approximately 2,500 metres, with drilling expected to commence in early Winter 2026. The precise drilling length will be determined by the depth of electromagnetic anomalies, which will be precisely mapped by the new survey and further supported by outcrop mapping and sampling. Outcrop mapping will provide critical information regarding the potential direction and dip of germanium mineralization.

Current sample results from the Laganière showing have yielded approximately 0.02% (186 ppm) Germanium, representing the highest-grade Germanium sample found to date in the Province of Quebec. The Company's objective is to increase Germanium grades to at least 0.04% (350 – 400 ppm) with average intersections of at least 10 metres in width.

The anticipated 2026-2027 exploration timetable includes: June 2026 – Airborne Survey Results and interpretation; June/July 2026 – Outcrop mapping and sampling Program; September 2026 – Outcrop Sampling Assay Results; Oct/Dec 2026 – Drill Permitting; and January 2027 – Diamond Drilling Program with anticipated assay results.

The 100% owned Lac du Km 35 Germanium Property is located approximately 40 km east of the mining town of Chibougamau in the Nord-du-Québec region of Québec, offering excellent access via Highway 167 and a main logging road. The Property contains the prominent Faribault Shear Zone (“FSZ”), oriented east-southeast and situated in the eastern portion of the Property. The FSZ dips to the south-southwest and terminates at the Grenville Front, a geological feature extending for hundreds of kilometres. The FSZ is a significant structural feature that may link with other permeable zones at depth, serving as a conduit for hydrothermal fluids.

The Laganière Germanium showing, discovered by government geologists in 1998 and never previously explored, consists of a peridotite outcrop within the Laganière gneissic Complex. This showing returned a value of 0.02% (186 ppm) germanium, the highest ever reported from an outcrop in Quebec. The Laganière showing is adjacent to the main lumber road and south of a cluster of untested electromagnetic anomalies measuring approximately 400 m x 400 m. It is also located 450 m northeast of the FSZ, 800 m from the southern margin of the Duberger felsic pluton, and approximately 2 km west of the Grenville Front. The area between the FSZ and the Laganière Germanium showing, including the untested electromagnetic anomalies, will be a primary focus for GMC.

Germanium is a hard, greyish, and brittle metalloid with increasing applications in electronics, solar technology, fiber optics, and infrared optics for both civil and military use. It is recognized as a critical metal by Canada, the United States, and the European Union. Notably, China, the world's largest producer of refined germanium, has restricted exports to the United States since December 3, 2024. Germanium is not an openly traded commodity, with recent spot prices exceeding US$5,000 per kilogram.

Benoit Moreau, P.Eng., a qualified person as defined by National Instrument 43-101 and vice-president of exploration for Germanium Mining Corp., has prepared and is responsible for the technical information within this news release.

Germanium Mining is an exploration company focused on developing discovery-stage mineral properties in prominent Canadian mining jurisdictions. Its properties are located in the “Allison Lake Batholith” of Northwestern Ontario, and the “Chapais-Chibougamau”, “Abitibi”, and “Upper Laurentides” regions of Quebec.

Source: GERMANIUM MINING CORP.