Grade Modelling
Grade modelling is an essential step in understanding your deposit, your approach to mining and how best to maximise returns to your investors. SRK utilises the most appropriate techniques to model your deposit and has extensive experience across a wide range of commodities and deposit styles.
Services
Approach
Our approach to grade modelling is primarily based on the geology and amount and type of sampling information available. Using our extensive experience in a variety of methods we tailor the grade estimation process to your individual deposit. We believe that getting the geological domaining right means that subsequent grade modelling can be kept as straight forward as possible.
We may produce basic estimates to test input assumptions for scoping studies, whilst a much more comprehensive estimate may be appropriate for bankable feasibility studies and operating mines taking account of the greater reliance placed on estimates required at later stages in a project.
SRK assesses grade continuity in a 3D software environment to allow the best possible understanding of domain geometry and grade distribution. These findings are used to optimise geological and grade domains, and search orientations; they also influence Mineral Resource estimation confidence which leads directly to classification and subsequent drilling and sampling strategy.
Experience
SRK has a large team of resource geologists all of whom are dedicated to producing high quality resource estimates. Grade modelling is a significant part of a resource estimation project especially where multiple variables and domains need to be considered. Our geologists are able to combine their skills and experience to quickly determine an optimum approach for the wide variety of situations we can be faced with.
We have a large skill base in the use of advanced statistical and geostatistical packages. In particular, SRK uses Isatis, an industry leading software package, interfaced with mining software such as Gemcom, Datamine, Vulcan and Surpac. This ensures a seamless transfer of the model to our mine planning colleagues.
Services
- Statistical and geostatistical analysis
- Grade estimation into block models using kriging as part of a detailed analysis of variability at both the orebody and at selective mining scales.
- Optimising grade estimation using quantitative kriging neighbourhood analysis
- Dealing with difficult distributions using non linear techniques
- Managing folded or uneven domains using unfolding or dynamic search methods
- Assessment of recoverable resources using uniform conditioning
Approach
Our approach to grade modelling is primarily based on the geology and amount and type of sampling information available. Using our extensive experience in a variety of methods we tailor the grade estimation process to your individual deposit. We believe that getting the geological domaining right means that subsequent grade modelling can be kept as straight forward as possible.
We may produce basic estimates to test input assumptions for scoping studies, whilst a much more comprehensive estimate may be appropriate for bankable feasibility studies and operating mines taking account of the greater reliance placed on estimates required at later stages in a project.
SRK assesses grade continuity in a 3D software environment to allow the best possible understanding of domain geometry and grade distribution. These findings are used to optimise geological and grade domains, and search orientations; they also influence Mineral Resource estimation confidence which leads directly to classification and subsequent drilling and sampling strategy.
Experience
SRK has a large team of resource geologists all of whom are dedicated to producing high quality resource estimates. Grade modelling is a significant part of a resource estimation project especially where multiple variables and domains need to be considered. Our geologists are able to combine their skills and experience to quickly determine an optimum approach for the wide variety of situations we can be faced with.
We have a large skill base in the use of advanced statistical and geostatistical packages. In particular, SRK uses Isatis, an industry leading software package, interfaced with mining software such as Gemcom, Datamine, Vulcan and Surpac. This ensures a seamless transfer of the model to our mine planning colleagues.
