The AusIMM Bulletin’s 3rd most read article was written by Ian Glacken
Ian Glacken’s article ‘New directions in geology modelling and orebody evaluation’ was the Bulletin’s 3rd most read online article for 2015. Well done Ian!
Category Tech talk
Read MoreThe AusIMM Bulletin’s 3rd most read article was written by Ian Glacken
30 Seconds of Info – don’t assume that geological and grade continuity are the same thing
Today’s 30 Seconds of Info comes from Ian Glacken our Director of Geology. Don’t assume that geological and grade continuity are the same thing: In an ideal world your deposit will have geological and grade continuity – but they are…
30 Seconds of Info – volume variance relationships
Today’s 30 Seconds of Info comes from Ian Glacken our Director of Geology. The volume-variance relationship is the key to resource estimation: understanding the relationship between samples of a certain size and their variability, and how this variability changes at different…
30 seconds of info – Resource estimation and evaluation – effects of clustering
Each week we will post "30 seconds worth of useful information" on both our website and LinkedIn. We hope you find it useful!
30 seconds of information – Reconciliation – stockpile volumes
This week's 30 seconds of info is about Reconciliation and stockpile volumes.
Declustering – an essential part of resource evaluation. Author: Ian Glacken
Mining data, by its very nature, is rarely collected in a regular pattern; it is human nature, and very good business sense, to take more samples in the higher-grade parts of orebodies. As a consequence of this data for resource evaluation is almost always clustered. While the most common method of grade estimation, ordinary kriging (OK), inherently declusters the input data through the point-to-point covariance matrix, other estimation methods, such as inverse distance modelling, do not decluster the data for the purposes of estimation, and this can sometimes lead to biased results.
Technology and the demand for critical minerals
Minerals have been of significant importance for mankind throughout industrial history, from the Copper, Bronze and Iron Ages to the present, demonstrating that every new discovery leads in turn to innovations.