RE: Mine plan9 Apr 2026 10:48
A JORC report defines the Mineral Resources and Ore Reserves of a mining project based on minimum standards for public reporting in Australasia. It provides a standardized, transparent framework (based on Competence, Materiality, and Transparency) to categorize in-ground mineralization by geological confidence (Inferred, Indicated, Measured) and economic feasibility (Proven, Probable).
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Key Definitions and Functions of a JORC Report
Mineral Resources: Defines the size, shape, grade, and quality of a mineral deposit.
Ore Reserves: Defines the part of a resource that is economically and technically feasible to extract.
Categories: Classifies resources as Inferred (low confidence), Indicated (medium), or Measured (high). Reserves are classified as Proved or Probable.
Transparency/Competence: Ensures reports are prepared by a Qualified Person ("Competent Person") and contain all necessary information for investors.
Usage Examples: Mining companies use JORC reports for mandatory ASX reporting, attracting investors, bank financing, and feasibility studies.