Ore Reserve Calculator
Estimate tonnage, metal content, recoverable value, and break-even grade for mining projects.
Deposit Parameters
Economic Parameters
Resource Estimation
Volume
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Ore Tonnage
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Diluted Tonnage
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In-Situ Metal
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Recoverable Metal
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Diluted Grade
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Economic Assessment
Gross In-Situ Value
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Recovered Revenue
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Total Cost
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Net Value
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Revenue per Tonne Ore
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Break-Even Grade
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Revenue vs. Cost per Tonne
How this was calculated
Tonnage: Volume = Area × Thickness. Tonnage = Volume × Density. Diluted tonnage accounts for waste rock mixing.
Metal content: For g/t: Metal (g) = Tonnage × Grade. For %: Metal (t) = Tonnage × Grade/100.
Break-even grade: BEG = (Mining + Processing cost per tonne) / (Recovery × Metal price per gram ore).
Assumptions: Uniform grade distribution. No geological loss factors. Simplified cost model without G&A, royalties, or sustaining capital.
Need help with resource estimation, mine planning optimization, or AI-driven geological modeling?
Book a free strategy call →Understanding Ore Reserve Estimation
Ore reserve estimation is a fundamental step in evaluating a mining project's viability. It combines geological data (deposit geometry, grade distribution) with mining parameters (recovery, dilution) and economic factors (metal prices, operating costs) to determine whether a mineral deposit can be profitably extracted.
The break-even grade is the minimum grade at which revenue from recovered metal equals the total cost of mining and processing. Deposits with grades above the break-even are potentially economic; those below are sub-economic at current prices. Cut-off grade is a related concept used to delineate ore from waste during mine planning.
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