38 - Categorical Kriging - what is it and when does it work? Part 1 of 2
Play • 14 min

This is the first podcast in a 2-part series that covers Categorical and Multiple Indicator Kriging, which is an increasingly popular mineral resource estimation technique. In this podcast, Optiro's Geology Director, Ian Glacken addresses the use and abuse of these techniques in mineral resource estimation.

This episode at a glance:

1:00 What are these two podcasts about?

1:36 What exactly is an indicator?

2:33 What is categorical kriging and where would I apply it?

4:32 Could you use it in a more simple application? (Sub domaining out your low-grade zones within a domain)

5:27 Have you seen categorical kriging used inappropriately?

7:11 Can you explain how categorical estimation works?

9:44 What are the key issues when using a categorical estimation?

11:21 Is the approach ever overused or abused?

For more information:

  • Rossi, ME, and Deutsch, CV (2014).  Mineral Resource Estimation.  Springer.
  • A practitioners' implementation of indicator kriging. Authors: I M Glacken and P C J Blackney. Contact Ian Glacken for a copy: iglacken@optiro.com
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