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Month March 2017

Spreadsheets aren’t databases! 30 Seconds of Info by Ian Glacken – Director of Geology.

This week's 30 Seconds of Info is from Ian Glacken - Optiro's Director of Geology. Spreadsheets aren’t databases! Spreadsheets are the cornerstone of reconciliation reporting and analysis but are not the best repositories for raw data. Any large spreadsheet which is not locked down is almost certain to have errors, and if this is the main storage area for the raw reconciliation data then there will be problems. Databases, whether through a production tracking system or a custom industrial-strength application, are no-brainers for storing raw reconciliation data. iglacken@snowdenoptiro.com

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Week 20-26 March 2017 – Optiro’s summary of RSC Resource Reporting Intelligence

Optiro’s summary of the RSC Resource Reporting Intelligence for 20-26 March 2017 includes: new technical reports published; project locations; project commodities; globally - resource and reserve estimation authors; significant drill intersections for the week month and year to date.

Read MoreWeek 20-26 March 2017 – Optiro’s summary of RSC Resource Reporting Intelligence

Optiro’s summary of the RSC Resource Reporting Intelligence for 13-19 March 2017

Optiro's summary of the RSC Resource Reporting Intelligence includes: the new technical reports published; project locations; project commodities; Optiro in top 7 of the most popular consultancies for authoring resource estimation reports – having authored 28 reports since October 2014; Optiro has authored 5 Reserve Estimates since October 2014; top 3 most significant drill intersections for the week; and top 3 most significant drill intersections in 2017 to date.

Read MoreOptiro’s summary of the RSC Resource Reporting Intelligence for 13-19 March 2017

30 Seconds of Info: Sampling theory and practice from Ian Glacken – Director of Geology

30 Seconds of Info - Sampling theory and practice:
Should you use Aircore samples in your resource estimate? If carried out to high standards, Aircore samples can approach RC in their level of representivity, although it is not suitable for all commodities and lithologies. It is always worthwhile looking at the relationship between Aircore and other sampling types (RC or DD) within an area where there is more-or-less equal representivity of both sample types; there should be no bias over the range of reasonable ‘ore-grade’ values.
This week's 30 Seconds of Info comes from Ian Glacken - Optiro's Director of Geology. iglacken@snowdenoptiro.com

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Optiro’s summary of the RSC Resource Reporting Intelligence report for 6-12 March 2017

Optiro’s summary of the RSC Resource Reporting Intelligence report for 6-12 March 2017 covers the following information: technical reports published; Project locations; Project commodities; resource estimation and reserve estimation report authors; and the top 3 most significant drill intersections for the week, month and year.

Read MoreOptiro’s summary of the RSC Resource Reporting Intelligence report for 6-12 March 2017

30 Seconds of Info from Paul Blackney – resource estimation

This week's 30 Seconds of Info comes from Paul Blackney - Principal Consultant. Every step of the resource estimation process should be validated in some way: While this may sound onerous and time consuming, it doesn’t need to be. For instance, check the downhole compositing process by determining the total sample length before and after compositing – it should be the same or nearly the same. The cause of any difference should be determined and either corrected or understood before proceeding.

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30 Seconds of Info from Paul Blackney: Remember that declustered data statistics are not perfect.

Resource estimation and evaluation. Remember that declustered data statistics are not perfect: Applying declustering is a good idea for many drillhole data sets, but recognise that it’s not a perfect process.  During optimisation of the declustering process, it should be…

Read More30 Seconds of Info from Paul Blackney: Remember that declustered data statistics are not perfect.

The AIG News, is now available free to all readers.

The Australian Institute of Geoscientists newsletter, AIG News, is now available free to all readers. Here are a few of the topics covered in their latest edition:
Probing the crust: Time, Space & Source relationship of granitoids at Cape Upstart, Northeast Queensland.
2D Lithosperic Imaging of the Delamerian and Lacklan Orogens, Southwestern Victoria, Australia from Broadband Magnetotellurics.
The origin of red pigment in Late Devonian limestones and significance for environmental changes, northern Canning Basin, Western Australia.
10 of the mini-essays submitted for the AIG 2016 Mini Essay Competition covering the topic: What will successful exploration in the future look like?

Read MoreThe AIG News, is now available free to all readers.

Optiro’s summary of the RSC Resource Reporting Intelligence for 27 Feb to 5 March 2017.

Optiro's summary of the RSC Resource Reporting Intelligence for the week of 27 Feb to 5 March 2017 covers: types of technical reports published; Project locations: Project commodities; Resource Estimation and Reserve reports by Report Authors – since October 2014: top 3 most significant drill intersections of the week / month and for 2017 to date.

Nevsun Resources Ltd – Timok in Serbia – resource definition; 3m @ 6.0% Cu, 3.79g/t Au from 438.8m
Premier Gold Mines Ltd – Hasaga in Canada – resource definition; 0m @ 10.94g/t Au from 771.0m
SkyHarbour Resources Ltd – Moore Lake in Canada – exploration; 5.9m @ 6.0% U308 from 261.6m
The top 3 most significant drill intersections in February 2017:

Nevsun Resources Ltd – Timok in Serbia – resource definition; 3m @ 6.0% Cu, 3.79g/t Au from 438.8m
UEX Corp – Christie Lake in Canada – exploration: 17.70m @ 11.46% U308 from 475.10m
Arizona Mining Inc – Hermosa in USA – resource definition; 122.5m @ 71.23g/t Ag, 7.15%Pb, 12.75% Zn, 0.17%Cu from 537.9m
Top 3 most significant drill intersections in 2017 to date:

Read MoreOptiro’s summary of the RSC Resource Reporting Intelligence for 27 Feb to 5 March 2017.

30 Seconds of Info from Ian Glacken – Capping before compositing or after?

This week's 30 Seconds of Info comes from Ian Glacken - Optiro's Director of Geology: Capping before or after compositing? This is a controversial topic which has adherents on both sides, although most believe that capping should be carried out after compositing, when the data has equal support. If you are going to cap before you composite the data, then the capping should be carried out with the variable as ‘metal’ or accumulation (grade times length), rather than just the assay itself. Contact: iglacken@snowdenoptiro.com

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