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Mineral Resources are further sub-divided, in order of increasing geological confidence, into inferred, indicated and measured as categories. Inferred Mineral Resource is the part of a mineral resource for which quantity, grade (or quality) and mineral content can be estimated with a low level of confidence. It is inferred from geological ...
Figure showing the relationship between Exploration Results, Mineral Resources and Mineral Reserves. The exact definitions of key terms like 'Modifying Factors', 'Inferred'-, 'Indicated'- and 'Measured Mineral Resources' as well as 'Probable' or 'Proved Mineral Reserves' are documented in the PERC Reporting Standard. [1]
Once further scientific and engineering investigation has been performed and it can be demonstrated that there are "reasonable prospects for eventual economic extraction", [2] then a Mineral Resource Report can be published or declared. There are three sub-categories of Mineral Resource within the Code, namely Measured, Indicated, and Inferred.
Coeur Reports Healthy Increases in Combined Reserves and Measured and Indicated Resources COEUR D'ALENE, Idaho--(BUSINESS WIRE)-- Coeur d'Alene Mines Corporation (NYS: CDE) (TSX:CDM) today ...
An indicated mineral resource is that part of a Mineral Resource for which quantity, grade or quality, densities, shape and physical characteristics, can be estimated with a level of confidence sufficient to allow the appropriate application of technical and economic parameters, to support mine planning and evaluation of the economic viability ...
Quantity, grade, or metal or mineral content of a deposit that has not been categorized as an inferred mineral resource, an indicated mineral resource, a measured mineral resource, a probable mineral reserve or a proven mineral reserve; Results of an economic analysis that includes inferred mineral resources
Diagram as published by McKelvey in 1973 [1] Diagram as published by McKelvey in 1976 [2]. A McKelvey diagram or McKelvey box is a visual representation used to describe a natural resource such as a mineral or fossil fuel, based on the geologic certainty of its presence and its economic potential for recovery.
Resource estimates are undiscovered volumes, or volumes that have not yet been drilled and flowed to surface. A non-reserve resource, by definition, does not have to be technically or commercially recoverable and can be represented by a single, or an aggregate of multiple potential accumulations, e.g. an estimated geological basin resource. [14]