Viscount Mining Identifies Key Copper Porphyry Indicators at Passiflora Project in Silver Cliff, Colorado

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PRESS RELEASE April 10, 2025

Viscount Mining Identifies Key Copper Porphyry Indicators at

Passiflora Project in Silver Cliff, Colorado

• Noteworthy sulfides including chalcopyrite , galena, sphalerite and pyrite

prevailing over a continuous drill interval of 1100m.

• Viscount's first drill hole in the Passiflora target seems to have most of the

mineral assemblage and alteration zones that are typical of most known copper

porphyry systems.

VANCOUVER, Canada ( April 10 , 2025) – Viscount Mining Corp. (TSX -V: VML) (OTCQX:

VLMGF) (“Viscount” or “the Company”) is pleased to provide an update on the recent drilling

progress at our Passiflora project in Silver Cliff, Colorado

During drilling activities on the first deep Passiflora core hole (see news release March 20, 2025) our

field geologists observed compelling geological features that suggest a potential for valuable deposits

in copper porphyry systems.

While drilling between 450m and 970m depth, the team began to suspect that alteration types typically

found in copper porphyry systems might have been overprinted—an indication of a complex and

potentially significant mineralization process. To investigate this further, six thin sections were prepared

from core samples within this depth range. These thin sections reinforce the original hypothesis that this

is a potential copper porphyry.

The analysis of these thin sections revealed intriguing findings, confirming the presence of overprinting.

Minerals that are typically associated with distinct alteration types were found in close association with

one another. Notably, biotite and chlorite were observed on the same slides, a common occurrence in

porphyries that points to multiple stages of alteration. Additionally, evidence of finely interstitial

sulfides was noted, and a sample was identified to contain tourmaline, a mineral commonly found in

porphyry systems.

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The term "presence of overprinting" refers to a geological process where different stages of alteration

(or changes in mineral composition) overlap or occur in the same rock. In this context, it suggests that

the minerals you would typically find in one type of alteration zone are present in the same rock sample

as minerals from another alteration zone. This can happen when new mineralization events or processes

"overprint" or replace earlier ones.

In a copper porphyry system, different alteration zones ( phyllic, propolytic, albitic and andargillic)

usually have specific minerals associated with them. For example, biotite and chlorite are often

associated with specific alteration types in these systems. When overprinting occurs, you find minerals

from different alteration zones (like biotite from one zone and chlorite from another) together in the

same sample, which indicates a complex geological history of multiple alteration events happening in

the same area.

Currently the core is being photographed, logged and cut for further analysis, with the first shipment of

core scheduled to be sent to SGS Labs in Phoenix for assaying later this week. We are optimistic that

these findings will continue to yield important data for understanding the mineralization potential at

Viscount’s Passiflora project.

The first drill hole completed to a downhole depth of 1143m at the Passiflora intersected continuous

sulphide mineralization throughout the entire length of the hole. The dri ll hole which identified

disseminated sulphides as well as more massive zones and abundant veins are present over an interval

of 1100m. Biotite was noted at 125 m and Argillic alteration was encountered below the overburden,

and around 200m it seems to change to phyllic alteration. Sphalerite was noted tentatively at 213m but

more confidently further down the hole . Chalcopyrite was first identified at 465m. Chalcopyrite is a

brass-yellow mineral with a chemical composition of CuFeS2. It occurs in all copper porphyry deposits

and is the main copper mineral in the porphyry systems. Magnetite was noted in trace amounts at 680m

followed by galena at 854m. Much of the hole after showed abundant overprinting of different types of

alteration. Also, three mineralized breccia zones were identified during preliminary logging.

Jim MacKenzie CEO of Viscount stated: “The current work by our geologists continues to prove out

the confidence that a porphyry style deposit may be reason for the geophysical anomaly. We will keep

investors updated on further developments as we continue to analyze the data and advance our

exploration efforts. The overprinting of alteration types seen in the core suggests that we are in an

exciting phase of exploration, and we look forwa rd to sharing additional results as they become

available”

Figure 1, below, is a cross section of through line L1E which depicts a view of the massive, low

resistivity anomaly described by Quantec. As shown, the bowl-shaped anomaly extends ~1400m (~4590

ft) across the center of the caldera, and at least 1500m (~4920 ft) deep, maybe deeper, depending upon

the accuracy of resistivity detection below the conductive body.

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Figure 1. A cross section through line L1E showing resistivity (in ohm-m) to a depth of ~2400

With the volcanic history of the region as a caldera makes it completely reasonable to assume that the

Passiflora target could be a porphyry at depth. This caldera is one of at least ten eruptive centers of the

Central Colorado Volcanic Field (CCVF). Four of these ten have been further classified as silicic

eruptive centers, of which the Silver Cliff caldera is one (McIntosh and Chapin, 2004). Another member

of this classification is Cripple Creek Mine, a highly profitable, still active deposit located ~70km NNE

of the Passiflora.

Viscount is also announcing the termination of its agreement with Lux Partners, effective

immediately.

Qualified Persons

The scientific and technical information contained in this news release has been reviewed and approved

by Harald Hoegberg PG, an independent consulting geologist who is a "Qualified Person" (QP) as such

term is defined under National Instrument 43-101 - Standards of Disclosure for Mineral Projects ("NI

43-101").

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About Viscount Mining (TSX VENTURE: VML) (OTCQX: VLMGF)

Viscount Mining is a project generator and an exploration company with a portfolio of silver and gold

properties in the Western United States, including Silver Cliff in Colorado and Cherry Creek in Nevada.

The Silver Cliff property in Colorado lies within the historic Hardscrabble Silver District in the Wet

Mountain Valley, Custer County, south- central Colorado. It is located 44 miles WSW of Pueblo,

Colorado, and has year-around access by paved road. The property consists of 96 lode claims where

high grade silver, gold and base metal production came from numerous mines during the period 1878

to the early 1900’s. The property underwent substantial exploration between 1967 and 1984. The

property is interpreted to encompass a portion of a large caldera and highly altered sequence of tertiary

rhyolitic flows and fragmental units which offers potential to host deposits with both precious and base

metals. This has been demonstrated in the mineralization historic ally extracted from the numerous

underground and surface mining operations. Based on the accumulated data and feasibility study,

Tenneco Minerals made the decision with silver at $5.00 USD an ounce to construct at that time a

$35,000,000 USD milling opera tion for the extraction of the silver reserves at Silver Cliff. Shortly

thereafter Tenneco’s Mining Unit was sold, and the planned milling operation was abandoned.

The Cherry Creek exploration property is in an area commonly known as the Cherry Creek Mining

District, located approximately 50 miles north of the town of Ely, White Pine County, Nevada. Cherry

Creek consists of 578 unpatented and 17 patented claims as well as mill rights. Cherry Creek includes

more than 20 past producing mines. In January 2021, Viscount entered an exploration earn - in

agreement with a wholly owned subsidiary of Centerra Gold Inc. Centerra is a Canadian -based gold

mining company focused on operating, developing, exploring and acquiring gold properties in North

America, Asia and other markets worldwide.

For additional information regarding the above noted property and other corporate information,

please visit the Company's website at www.viscountmining.com

ON BEHALF OF THE BOARD OF DIRECTORS

“Jim MacKenzie”

President, CEO and Director

For further information, please contact:

Viscount Investor Relations

Email: [email protected]

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the

TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.

Forward-Looking Statements

This news release includes certain statements that may be deemed “forward- looking statements” within the meaning of

applicable Canadian securities legislation. Forward- looking statements include, but are not limited to, statements with

respect to Viscount Mining’s operations, exploration and development plans, expansion plans, estimates, expectations,

forecasts, objectives, predictions and projections of the future. Specifically, this news release contains forward looking

statements with respect to the actual size of the anomaly , feasibility, grade of mineralization and the content of the

April 10, 2025 - Press release

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mineralization. Generally, forward -looking statements can be identified by the forward- looking terminology such as

“plans”, “expects” or “does not expect”, “is expected”, “budget”, “scheduled”, “estimates”, “projects”, “intends”,

“anticipates”, or “does not anticipate”, or “believes”, or “variations of such words and phrases or state that certain

actions, events or results “may”, “can”, “could”, “would”, “might”, or “will” be taken”, “occur” or “be achieved”.

Forward-looking statements are subject to known and unknown risks, uncertainties and other factors that may cause the

actual results, level of activity, performance or achievements of Viscount Mining to be materially different from those

expressed or implied by such forward- looking statements, including but not limited to: risks related to the exploration and

development and operation of Viscount Mining’s projects, the actual results of current exploration, development activities,

conclusions of economic evaluations, changes in project parameters as plans continue to be refined, future precious metals

prices, as well as those factors discussed in the sections relating to risk factors of our business filed in Viscount Mining’ s

required securities filings on SEDARPlus. Although Viscount Mining has attempted to identify important factors that could

cause results to differ materially from those contained in forward-looking statements, there may be other factors that cause

results to be materially different from those anticipated, described, estimated, assessed or intended.

There can be no assurance that any forward- looking statements will prove accurate, as actual results and future events

could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on

forward-looking statements. Viscount Mining does not undertake to update any forward- looking statements that are

incorporated by reference herein, except in accordance with applicable securities laws.