Antimony Mine Development – Project Finance Model (Excel XLSX)

BENEFITS OF THIS EXCEL DOCUMENT

1. A financial model assessing the financial viability, investment potential, and value creation of an antimony mining project.

MINING INDUSTRY EXCEL DESCRIPTION

Editor Summary Antimony Mine Development – Project Finance Model is an XLSX financial model by Profit Vision for assessing antimony mine development and operations. Read more Built by a certified FMVA with 20+ years’ experience, it includes dynamic inputs (ore grade, recovery, stibnite concentrate conversion, strip ratio, throughput, downtime), development budget, debt amortization with optional moratorium/interest-only, monthly/quarterly and annual cash flows, KPIs, project returns (unlevered/levered IRR, NPV, MOIC), and a 3-tier investor waterfall for up to 4 LPs and 4 GPs, sold as a digital download on Flevy.

Use this model when evaluating greenfield or development-stage antimony projects for investment, financing, JV structuring, or feasibility assessment.

  Project finance analysts building lender-ready cash flow schedules and DSCR testing using the model’s debt amortization and monthly cash flows.
  Mining engineers translating ore grade, mill recovery, and strip ratio into annual production forecasts for revenue modeling.
  Private equity or strategic investors assessing IRR, NPV, MOIC, and partner promotes using the 3-tier waterfall.
  CFOs preparing development budgets, capex timing, and closure reserves for financing discussions.

The model’s modular, input-driven structure with separate debt, monthly/quarterly cash flows, and KPI dashboards follows Financial Modeling Best Practices.

An antimony mine is a site where antimony ore, often in the form of stibnite, is extracted for use in industrial and commercial applications. The mining process involves drilling, blasting, and processing the ore to obtain antimony, which is used in flame retardants, batteries, alloys, and semiconductors. Antimony mines require significant safety and environmental management due to the mineral's toxic properties. They play an important role in supplying materials essential for electronics, energy storage, and manufacturing industries.

This Financial model presents a development and operations scenario of an Antimony Mine incorporating key technical and economic assumptions to assess its financial viability. The model includes dynamic inputs for ore grade, recovery rates, stibnite concentrate conversion, strip ratio, ore throughput, and operational downtime, with detailed calculations for production, revenue, capital and operating costs, royalties, and taxes. It delivers full financial outputs including cash flows, IRR, NPV, and payback period, making it a decision-ready tool for investors, lenders, and strategic partners evaluating the project's return potential and risk profile.

The structure of the template follows Financial Modeling Best Practices principles and is fully customizable.

Model Structure

•  General Setup Inputs
Production and Operations-related inputs, including Project Timing, Production Assumptions (Daily Ore Production, Capacity Utilization, Ore Grade, Mill Recovery Rate, Stibnite concentrate Conversion, Strip Ratio), Operating Assumptions (Revenue, Operating Expenses, CapEx), Mine Closure Assumptions (Closure G&A Costs, Closure Reserves Account), Project Financing (Equity, Debt, and Government Grants), and Tax Benefits (ITC or Tax Free period)

•  Development Budget
Mine Development Assumptions including Land costs, Hard costs, Soft costs, Development Timing, and Development Cash Flow distribution (Straight-line, S-Curve)

•  Debt Schedule
Loan amortization Schedule of project's debt including an optional moratorium and interest-only (IO) period.  

•  Monthly & Quarterly Cash Flows
These 2 reports present all the operating cash flows of the project over monthly and quarterly periods. It allows users to control the timing and how the cash flows over that time.

•  Annual Cash Flow
A roll-up of the monthly cash flows into annual periods from Mine Development to Net Cash Flow after taxes. 

•  Performance Reports
The model includes KPIs and Performance dashboard reports assisting users to monitor project's operations and profitability.

•  Project Returns
Report presenting project unlevered and levered returns (Pre-Tax & After-Tax IRR, MOIC, Cash Outflows, Inflows and Profits)

•  Investors' Returns Waterfall
A 3-tier IRR hurdle waterfall model to distribute proceeds between investors. The report provides inputs for up to 4 different LPs with different equity contribution percentages and up to 4 different GPs with different equity contributions and equity share percentages. The first tier distributes cash flow to the partners until the LPs has achieved some defined preferred return and received a full return of capital. Assuming the preferred return hurdle is hit in tier one, cash flow is distributed in tiers two and three based on a defined promote structure and hurdle rates as outlined by the user.

•  Project Executive Summary:
A high-level summary of the project's key data, including:
– Key Project Metrics (Project Timing, Production Metrics, Payback Period, Free & Clear Return Ratio, Cash-on-Cash Ratio, DSCR)
– Uses & Sources of Cash
– Operations Summary (Revenue, Net Operating Income, Net Cash Flow)
– Project Level Return Metrics (Unlevered & Levered)
– Partnership (LP's & GP's) Level Returns Summary (IRR, MOIC, Cash Outflows, Cash Inflows, Profit)
– Business Performance Dashboard

Detailed instructions for the use of the model are included in the Excel file.

Help & Support

Committed to high quality and customer satisfaction, all our templates follow best-practice financial modeling principles and are thoughtfully and carefully designed, keeping the user's needs and comfort in mind.
No matter if you have no experience or are well versed in finance, accounting, and the use of Microsoft Excel, our professional financial models are the right tools to boost your business operations!
If you, however, experience any difficulty while using this template and you are not able to find the appropriate guidance in the provided instructions, please feel free to contact us for assistance.
If you need a template customized for your business requirements, please e-mail us and provide a brief explanation of your specific needs.

TOPIC FAQ

What production and operational inputs are most important when modeling an antimony mine?

Key production inputs include daily ore production, capacity utilization, ore grade, mill recovery rate, stibnite concentrate conversion, strip ratio, ore throughput, and operational downtime. These core variables feed production, revenue, and cost schedules and are treated as dynamic inputs in the model, totaling 6 primary production and operational parameters.

How should I model debt financing for a mine development project?

A proper debt schedule includes loan amortization with options for moratoriums and interest-only periods, explicit interest and principal timing, and integration with cash flow timing. The model’s debt schedule supports optional moratorium and interest-only arrangements within the loan amortization schedule.

Which financial outputs are essential for judging an antimony project’s viability?

Essential outputs are project cash flows, pre-tax and after-tax IRR, NPV, payback period, MOIC, and metrics like DSCR and cash-on-cash ratios. Flevy’s Antimony Mine Development – Project Finance Model delivers these outputs to assess return potential and risk profile, including IRR, NPV, and payback period.

How can I structure investor distributions and promotes in a mining JV?

Use an IRR-hurdle waterfall with tiers that return capital and preferred returns to LPs before promote sharing to GPs. The model includes a 3-tier IRR hurdle waterfall that supports up to 4 LPs with different contributions and up to 4 GPs with distinct equity shares.

What periodic reports should a model provide for operational monitoring?

Operational monitoring requires monthly and quarterly cash flow reports, an annual roll-up, KPIs and performance dashboards showing revenue, net operating income, net cash flow, and project timing. The model provides monthly and quarterly cash flow reports alongside a business performance dashboard.

What features should I prioritize when buying a commercial mine project finance template?

Prioritize dynamic ore and recovery inputs, a separate development budget and capex phasing (straight-line or S-curve), a detailed debt schedule, monthly/quarterly cash flows, closure assumptions, and investor return waterfalls; these features align with Financial Modeling Best Practices and include debt schedule, monthly/quarterly cash flows, and an investor waterfall.

How are mine closure and reclamation liabilities represented in a financial model?

Closure is modeled with dedicated inputs for closure G&A costs and a closure reserves account to capture decommissioning expenses and timing, ensuring closure cash flows are forecasted and reserved within the project’s financials as closure G&A costs and a closure reserves account.

What metrics should I highlight in an executive summary for potential lenders or partners?

Highlight project timing, production metrics, payback period, free & clear return ratio, cash-on-cash ratio, DSCR, uses & sources of cash, and partner-level IRR and MOIC. These metrics form the executive summary and business performance dashboard, with emphasis on payback period, DSCR, and cash-on-cash ratio.

Source: Best Practices in Mining Industry, Integrated Financial Model Excel: Antimony Mine Development – Project Finance Model Excel (XLSX) Spreadsheet, Profit Vision