Search results
Results from the WOW.Com Content Network
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]
A Mineral Reserve is the economically mineable part of a Measured or Indicated Mineral Resource demonstrated by at least a Preliminary Feasibility Study. This Study must include adequate information on mining, processing, metallurgical, economic and other relevant factors that demonstrate, at the time of reporting, that economic extraction can ...
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.
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
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.
Total (Measured+Indicated+Inferred) Resources of 742 koz of gold at 2.94 g/t were estimated for the Pistol Bay deposit as at 31 December 2017 (Mineral Resources estimated within pit shell that is defined by a US$1,500/oz price (US$1,550/oz in 2016) and Au CoG of 1.25 g/t.). [11]
The total Inferred, Indicated and Measured Mineral Resource is; 6.3 Mt @ 11.1% graphitic Carbon (gC) for 697,000 contained tonnes (at a 3.5% gC cut-off grade). The Ore Reserve estimate is based on Measured and Indicated Mineral Resources only. The Ore Reserve and Mineral Resource were calculated in accordance with JORC 2012 guidelines.