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Property D · Project Sierra
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Strictly Confidential · NDA Required
Document Type Investment Teaser Date April 2026
Project Sierra  ·  Chihuahua, Mexico

Gold &
Silver

A high-grade, past-producing precious metals asset in the Sierra Madre Occidental belt, offering a rare combination of established infrastructure, active permits, and proven in-ground resources.

~99K t Ind+Inf
Total Resource
Vendor Estimate
1.19 g/t Au
Gold Grade
161 g/t Ag
Active — LOI
Acquisition Stage
Royalty Structure
$25M
Asking Price
USD
Sierra Madre Occidental  ·  Chihuahua, Mexico
Asset identity disclosed only upon NDA execution. This document does not constitute an offer of securities or financial advice.
Confidentiality Notice The identity and location of this asset are withheld pending execution of a Non-Disclosure Agreement. The full data room — including concession certificates, geological reports, and historical production records — is available immediately thereafter.
01

Opportunity Overview

Project Sierra is a high-grade gold and silver underground mine located in Chihuahua State, Mexico, within the prolific Sierra Madre Occidental precious metals belt — the same geological corridor that hosts several of Mexico's largest producing mines, including properties operated by First Majestic Silver, Coeur Mining, and others.

The asset operated as a significant industrial mine from the late 1930s through the 1940s, supported by a dedicated flotation and cyanidation plant, a diesel powerhouse, and a workforce of several hundred. Multiple named epithermal veins were developed across six underground levels. Detailed geological maps and production records from this period are preserved and available.

The mine is held by a family-controlled Mexican mining company that has recently reactivated underground access and ongoing geological exploration. The vendor seeks a strategic acquirer or development partner at a full acquisition price of USD $25,000,000, with openness to structured deal formats including earn-in and option arrangements.

With gold at $4,784/oz and silver at $79.58/oz (USD spot, April 19, 2026) — both near all-time highs — the asset's in-ground metal content is at its most economically compelling point in decades.

Deal Snapshot
Location Chihuahua, Mexico
Commodity Gold & Silver
Deposit Type Epithermal Vein
Mine Type Underground + Surface
Status Exploration / Pre-Production
Power CFE Grid Connected
Access Airstrip + Road
Explosives Permits Active (SEDENA)
Asking Price USD $25,000,000
Structures Sale · Option · Earn-In
Data Room Under NDA
02

Resource Estimate

The following estimates are based on internal geological work conducted by the vendor's team. These figures are not NI 43-101 compliant. An independent qualified-person review and technical report can be commissioned as part of any option or due diligence process. Historical drill data, vein mapping, and assay records supporting these estimates are available in the data room.

Category Tonnes Ag (g/t) Au (g/t)
Indicated Resource
Underground6,8962430.86
Surface21,1832251.85
Indicated Total28,0792291.61
Inferred Resource
Underground8,9672411.45
Surface61,6571190.96
Inferred Total70,6241341.02
Combined
Indicated + Inferred98,7031611.19
Exploration Potential78,144570.09

Resource estimates prepared by the vendor's geological team. Not NI 43-101 compliant. Metal prices as of April 19, 2026: Au $4,784/oz; Ag $79.58/oz (USD spot). Processing recovery estimated at 80%.

03

Key Competitive Advantages

CFE Grid Power
Federal Electricity Commission power is connected directly to the mine site, substantially reducing operating costs and eliminating the capex burden of remote diesel generation that affects most comparable assets in the region.
Operational Airstrip
A functional airstrip adjacent to the concession provides direct access for management, technical teams, and investors — a rare logistical advantage for a pre-production asset at this development stage.
SEDENA Explosives Permits
The vendor holds active SEDENA explosives authorizations — among the most difficult permits to obtain in Mexico under current regulatory frameworks. This eliminates a 12–24 month barrier facing any incoming operator without them.
Existing Infrastructure
Flotation cells, processing plant footprint, workshops, offices, roads, and storage buildings are on site. Substantially reduces the capital requirement and timeline to production versus a comparable greenfield asset.
Proven Vein System
Multiple named epithermal veins with six developed underground levels and detailed 1940s geological mapping. Vein continuity at depth remains open and untested by modern methods, offering genuine resource expansion upside.
80-Year Production Pedigree
Industrial-scale operation in the 1937–1941 peak period with flotation, cyanidation, and underground hoisting confirms deposit existence and metallurgical processability. Historical records are preserved and available in the data room.
04

Indicative Economics

The following figures are calculated in USD at current spot prices (Au $4,784/oz · Ag $79.58/oz as of April 19, 2026) applied to the stated resource grades and a 30 t/day operating rate. They are presented for indicative purposes only and are subject to independent verification during any formal due diligence process.

Surface Operation
~$394K
Estimated monthly net revenue at 30 t/day — surface grades (1.85 g/t Au · 225 g/t Ag), 80% recovery, after $80/t processing cost and concentrate deductions
Underground Operation
~$352K
Estimated monthly net revenue from underground ore (1.45 g/t Au · 241 g/t Ag), 80% recovery, after $130/t processing cost and concentrate deductions
Combined Annual
~$13.2M
Estimated annual net revenue potential at steady-state combined surface and underground operations at current USD spot prices

All figures in USD. Metal prices: Au $4,784/oz · Ag $79.58/oz (spot, April 19, 2026). Processing costs: surface $80/t · underground $130/t. Net revenue after concentrate deduction of 80% × 90%. All figures are independent estimates for indicative purposes only and do not constitute a representation, warranty, or guarantee of future financial performance.

05

Proposed Transaction

The vendor seeks a full acquisition of 100% of the mining concessions and all associated company assets. The stated asking price is USD $25,000,000. The following deal structures are each considered:

Option A
Outright Sale
Full cash acquisition of 100% of the mining concessions and associated assets, including all permits, infrastructure, and historical documentation. Preferred for buyers with immediate development plans and operational capability.
Option B
Staged Earn-In
Initial payment of $5–8M for majority operating interest, with subsequent staged milestone payments tied to production benchmarks, totaling up to $25M in aggregate over the earn-in period.
Option C
Option Agreement
A negotiated paid option granting the right to acquire the asset following a defined due diligence and technical program window, which may include commissioning an NI 43-101-compliant resource estimate.
Proceed to Full Data Room
Execute the NDA to access concession certificates, geological reports, historical maps, assay data, and vendor financial projections. Site visits can be arranged via the on-site airstrip.
Request NDA
Project Sierra  ·  April 2026  ·  Confidential
This document is strictly confidential and is intended solely for the named recipient. It does not constitute an offer to sell or solicitation of an offer to buy any securities or assets. Any reproduction or disclosure without prior written consent is prohibited.