Mr. Wayne Hubert reports

INZINC INTERSECTS 11.0% ZN, 2.3% PB AND 27.1 G/T AG OVER 3.0 M WITHIN A 40% EXTENSION OF SEDEX MINERALIZED TREND AT INDY PROJECT, CENTRAL BC

InZinc Mining Ltd. has released the first results from 2025 exploration diamond drilling at its 100-per-cent-owned Indy Sedex (zinc-lead-silver-barite) project, located 90 kilometres southeast of Prince George in central British Columbia, Canada. Results from four (of 11 completed) shallow drill holes, exploring the northern extension of near-surface mineralization at the B-9 zone, are summarized below.

2025 results -- highlights of B-9 North drilling (Table 1)

Hole IB25-029

• Near-surface massive sulphides averaging 11.0 per cent Zn, 2.3 per cent Pb and 27.1 grams per tonne Ag over 3.0 metres from 61.0 m down hole;
• Located 80 m north of previously released hole IB18-003 which included 9.3 per cent Zn, 2.4 per cent Pb and 18.0 g/t Ag over 3.1 m from 25.0 m down hole;
• Depth extension was tested in Hole IB25-034 (same pad, steeper angle) and intersected 3.5 per cent Zn, 0.3 per cent Pb and 1.8 g/t Ag over 2.9 m (from 53.2 m down hole) located 20 m east of massive sulphides in hole IB25-029;
• High grades remain open for exploration along trend and at depth.

New drilling extends mineralized trend by more than 40 per cent -- from 450 m to 650 m

• Four shallow drill holes IB25-029, IB25-034, IB25-035 and IB25-036 confirm the B-9 mineralized trend extends 200 m north and is open for expansion to the north, south and down dip.

Gallium, a critical mineral, identified in massive sulphide sample from hole IB25-029

• A sample of massive sulphide comprising a 0.6 m length (from 63.4 m to 64.0 m) grading 34.8 per cent Zn, 7.0 per cent Pb and 76.7 g/t Ag returns 4.46 ppm (parts per million) gallium.

Massive sulphides in two areas

Drilling to date has encountered two shallow massive sulphide (high-grade) areas, 250 m apart, within a broader zone of same stratigraphy but lesser grade mineralization. Both areas of massive sulphides remain open for expansion.

In the northern area, the massive sulphide zone intersected in hole IB25-029 (11.0 per cent Zn, 2.3 per cent Pb and 27.1 g/t Ag over 3.0 m from 61.0 m down hole) correlates well, spatially and geologically, to a shallow massive sulphide intercept discovered 80 m south in 2018 (hole IB18-003: 9.3 per cent Zn, 2.4 per cent Pb, 18.0 g/t Ag over 3.1 m from 25.0 m down hole, previously released). The mineralized intercepts from these drill holes and hole IB25-034 currently indicate a subhorizontal geometry to the mineralized zone.

In the southern area, shallow massive sulphides were intersected in 2018 in hole IB18-009 (previously released): 8.0 per cent Zn, 2.0 per cent Pb, 16.2 g/t Ag over 9.9 m from 78.1 m. Several 2025 holes directed at expansion of the southern area are pending results.

Expansion of B-9 mineralized trend by more than 40 per cent -- remains open

Shallow drill holes IB25-029, IB25-034, IB25-035 and IB25-036 extended, by 200 m, a continuous geological horizon known to be mineralized across the previously drilled southern trend. Mineralization intersected in new drilling within the now extended horizon varies from high grade, massive sulphides in hole IB25-029 to moderate mineralization in hole IB25-034 and narrow but still anomalous mineralization from samples in hole IB25-035. The northernmost drill hole, hole IB24-036 (1.3 per cent Zn, 0.2 per cent Pb and 1.7 g/t Ag over 4.1 m starting from 42.9 m down hole), intersected shallow mineralization within the horizon.

The new northern extension of shallow mineralization remains open for exploration both at depth and to the north. Untested soil geochemical and EM geophysical anomalies continue for at least 750 m to the north of hole IB25-036 suggesting the potential for an extensive mineralizing system.

Gallium present in massive sulphide

Gallium, a critical metal, is present in the analysis of a massive sulphide sample from Hole IB25-029. A sample of massive sulphide comprising a 0.6 m in length (from 63.4 m to 64.0 m) grading 34.8 per cent Zn, 7.0 per cent Pb and 76.7 g/t Ag returned 4.46 ppm gallium (sample 178716).

Gallium is known to be associated with sphalerite, the primary zinc mineral found in Sedex (zinc-lead-silver) deposits like the B-9 zone at Indy. Not all zinc deposits contain gallium, but approximately 40 per cent of global mined gallium production is currently sourced, as a byproduct, from gallium occurring at low levels (parts per million) in zinc ore concentrates.

Two types of gallium occurrences have been identified at Indy. The reported gallium sample in hole IB25-029 is associated with high concentrations of sphalerite. In addition, gallium is also widely distributed in altered rocks which directly underlie the mineralized horizon at the B-9 zone. For example, in hole IB29-034 average gallium grades of 20.1 ppm over 11.6 m are present starting from 57.2 m down hole. Commencing at 1.0 m below the mineralized horizon, this type of gallium is not associated with sphalerite content and is potentially related to enrichment of sericite (a fine mica also called an alumino-silicate) in altered sediments. While this (mica) type of gallium occurrence is known to occur in Australia, there are currently no examples of commercial scale production.

Sedex district in central British Columbia

The extensive tenure at Indy covers 200 square km and a 30 km length of underexplored strata in central British Columbia. The Indy project is well located with respect to road, rail, power, port and smelter infrastructure.

The near surface mineralization (zinc-lead-silver and barite) discovered across the 7.5 km Main trend at Indy is typical of worldwide Sedex deposits and districts. These deposits often include significant silver and critical minerals as byproducts.

About Inzinc Mining Ltd.

InZinc is an active explorer at its Indy Sedex project (100 per cent) in central British Columbia, Canada. The company is exploring near-surface zinc-lead-silver and barite mineralization discovered at Indy in a new, underexplored mineral region analogous to the prolific Selwyn basin of northeastern British Columbia and the Yukon. South32 Ltd. became a major tenure holder in the Indy belt by staking approximately 200 square kilometres of adjacent claims in late 2021. Through its equity investment in American West Metals (ASX) and a 50-per-cent royalty interest (NSR) from any future production of indium mined at American West's West Desert project, Inzinc is also exposed to a portfolio of North American base metals and precious metals projects.

Qualified person

Patrick McLaughlin, PGeo, an independent qualified person as defined in National Instrument 43-101 -- Standards of Disclosure for Mineral Projects and a registered professional geoscientist in British Columbia, has approved the technical content of this news release.

Quality assurance/quality control

Drill core was collected from the drill site and delivered to the Indy camp by Inzinc staff. The core was logged, sample intervals were outlined and photographic records were collected. Core samples were split using a diamond saw or manually chipped at the camp with one-half of the core submitted for assay and the remainder stored in wooden core boxes. The core was bagged in individually marked plastic sample bags and shipments were compiled in labelled rice bags. Core shipments were delivered by Inzinc contract geologists to Bandstra Transportation Systems Ltd. in Prince George, B.C., for furtherance to MSA Labs in Langley, B.C., Canada, for analysis. Samples were prepared by MSA and analyzed by ICP-AES multielement plus four-acid digestion and select AAS-fire assay. In addition to the labs QA/QC procedures, Inzinc inserted blind standards, blanks or lab-directed duplicates by special instruction -- every 10th sample. The results from the QA/QC samples were within industry norms.

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