If you have conditional bias: Get more and closer-spaced data, estimate into larger volumes (this generally works – but not always), think about a change of support if this isn’t possible, and choose an estimation method which doesn’t exaggerate the…
Optiro’s weekly summary of the RSC Resource Reporting Intelligence for 6-12 Feb 2017 covers information about the number and type of technical reports published, the project locations, the commodities, globally the resource estimation and reserve estimation report authors since October 2014, the top 3 significant drill intersections of the week and the year to date.
Ian Glacken - Director of Geology's 30 Seconds of Advice. Be aware of the limitations of ID estimation: Inverse distance (ID) is often touted as a viable alternative to Ordinary Kriging (OK), and it can be – but you must appreciate its two or three very serious limitations and correct for these. The limitations are that there is no accounting for data clustering (unlike OK) and the choice of a power is essentially arbitrary. As long as you are aware of these issues, ID can sometimes be used as a ‘check’ technique for OK.
Summary of the RSC Resource Reporting Intelligence for week 23-29 January 2017 96 technical reports were published: 21 Mineral Resources 5 Maiden Resources 63 Exploration / Drilling 1 Environmental 46% used JORC Code 49% used NI43-101 Project locations: 34 in…
This week's 30 Seconds of Info comes from Ian Glacken - Director of Geology: Always look at a range of top-cut (capping) techniques: There is no single ‘magic bullet’ technique for top-cutting a set of data; the top-cut chosen will depend upon the nature of the data, the support of the data and the location of the sample points...
Blanks should never be inserted at regular intervals within the sample stream: It is always much more easy for automation of the QAQC process that blanks are inserted at regular intervals, but this is not optimal and is in fact…
Here is the Optiro summary of the RSC Resource Reporting Intelligence for week 16 – 22 January. 109 new technical reports were published: 11 mineral resources 1 maiden resource 89 exploration / drilling (28 more than last week and highest…
This week’s 30 Seconds of Info comes from Ian Glacken – Director of Geology. Grabbing samples from ore passes: Deriving grades from underground ore passes, especially in precious metal mines, is a hit-and-miss activity at best, and may give a…
Here is a summary of the RSC Resource Reporting Intelligence report for 9-15 January. Reports published: 79 new technical reports 10 mineral resources 3 maiden resources 61 exploration / drilling 4 environmental reports 29% used JORC Code 67% used NI43-101…
Optiro's summary of the RSC Resource Reporting Intelligence for the week 2-8 January 2017 gives you: the types of reports; the Reporting Codes used; the location of the projects; the project commodities; the most popular Consulting Groups; and the top 3 drill intersections.
