American Pacific Identifies New Geological Anomalies Revealed in Underground Workings in Advance of Drill Program at Madison Copper-Gold Project in Montana
American Pacific Identifies New Geological Anomalies Revealed in Underground Workings
in Advance of Drill Program at Madison Copper-Gold Project in Montana
Vancouver, British Columbia – March 10, 2026 —American Pacific Mining Corp. (CSE: USGD /
OTCQX: USGDF / FSE: 1QC1) (“American Pacific”, or the “Company”) is pleased to announce a
compelling new geological observation from ongoing exploration work at its Madison Copper-
Gold Project (“Madison” or the “Project”) in Montana resulting in the successful application of
a “fugitive calcite” black -light technique in newly revealed underground workings, which has
contributed to an increased understanding of the mineralizing system at Madison. Recent
fieldwork has taken advantage of a short seasonal window of greater underground access made
possible by lower water levels revealing an additional 150 feet of newly exposed ramp access.
American Pacific’s geological team has successfully deployed ultraviolet (black-light) scanning to
search for “fugitive calcite” a technique learned from renowned exploration geologist Dr. Peter
Megaw. Under black light, certain calcite populations fluoresce, providing a powerful
discriminator within a sea of visually similar non -fluorescent veins. At Madison, this work has
already identified at least one distinct population of fluorescing veins (see Image 2 ) among
numerous non- glowing vein sets. When these veins are plotted on stereonets, they offer an
additional layer of structural information that can further refine vectors toward both porphyry
and carbonite replacement deposit (“ CRD”) targets. This supports the working hypothesis that
Madison may host a cluster of porphyries —multiple sources rather than a single “textbook”
center—and provides a new toolset to help unravel this unique mineralizing system.
“The use of ultraviolet lights to detect fugitive calcite is a skill learned while working underground
in Utah with Dr. Megaw,” commented Managing Director of Exploration, Eric Saderholm. “The
fluorescence in the calcite indicates the presence of trace amounts of manganese and lead, both
of which are indicators of carbonate replacement that can be associated with skarn, CRD and the
presence of distal porphyry mineralization. Fugitive calcite represents “exhaust” proximal to
where sulfide mineralization has formed containing stronger metal concentrations. It is a simple
and inexpensive, yet highly effective tool for this type of mineral exploration.”
Image 1. Fugitive Calcite being illuminated by ultraviolet (black-light) (left); and Fugitive Calcite
being illuminated by ultraviolet (black -light) in the newly exposed area of Madison’s
underground (right)
American Pacific will provide further updates as additional data are collected, interpreted and
integrated into the broader Madison exploration model.
Qualified Person
The scientific and technical content of this press release has been reviewed, prepared and
approved by Eric Saderholm, P.Geo., and Managing Director of Exploration for American Pacific
who is a “Qualified Person” as defined by NI 43-101.
About American Pacific Mining Corp.
American Pacific Mining Corp. is a precious and base metals explorer and developer focused on
opportunities in the Western United States. The Company ’s flagship asset is the 100%- owned
past-producing Madison Copper-Gold Project in Montana. For the Madison transaction, American
Pacific was selected as a finalist in both 2021 and 2022 for ‘Deal of the Year’ at the S&P Global
Platts Metals Awards, an annual program that recognizes exemplary accomplishments in 16
performance categories. Through a 2025 transaction with Vizsla Copper, American Pacific has
established a major equity position milestone upside exposure to the advanced exploration stage
Palmer Copper-Zinc VMS Project in Alaska. Also, in American Pacific’s portfolio are several high-
grade, precious metals projects located in key mining districts in Nevada, some on which the
Company intends to transact. The Company’s mission is to provide shareholders discovery and
exploration upside exposure across its portfolio through partnerships, spin- outs and direct
exploration.
American Pacific is incorporated pursuant to the laws of British Columbia and its head office is
located at Suite 910 – 510 Burrard Street Vancouver, BC, V6C 3A8.
On behalf of the American Pacific Mining Corp Board of Directors:
Warwick Smith, CEO & Director
Corporate Office: Suite 910 – 510 Burrard Street
Vancouver, BC, V6C 3A8 Canada
Investor relations contact:
Kristina Pillon, High Tide Consulting Corp.
604.908.1695 / [email protected]
Media relations contact:
Adam Bello, Primoris Group Inc.
416.489.0092 / [email protected]
Full disclosure can be found in our NI 43-101 Technical Report for the Madison Project at
www.americanpacificmining.com.
The Canadian Securities Exchange has neither approved nor disapproved the contents of this
news release.
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information within the meaning of applicable Canadian securities laws. All statements in this news release,
other than statements of historical facts, are forward-looking statements. Such forward -looking
statements and forward-looking information specifically include, but are not limited to, statements that
relate to the completion of the transaction, and timely receipt of all necessary approvals.
Any statements or information that express or involve discussions with respect to predictions, expectations,
beliefs, plans, projections, objectives, assumptions or future events or performance (often, but not always,
using words or phrases such as "expects", "anticipates", "believes", "plans", "estimates", "intends",
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negative of any of these terms and similar expressions) are not statements of historical fact and may be
considered forward-looking information. The Company's forward-looking information is based on the
assumptions, beliefs, expectations and opinions of management as of the date of this press release and
include but are not limited to information with respect to, the transaction and receipt of all necessary
approvals therefor. Other than as required by applicable securities laws, the Company does not assume
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beliefs, expectations or opinions should change, or changes in any other events affecti ng such statements
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