30 Seconds of Info – QAQC: employ a minimum of 4 CRMs or Standards at any one time
Employ a minimum of four Certified Reference Materials (CRM’s or Standards) at any one time: A typical protocol is to insert CRMs that allow assay accuracy to be monitored at grades equivalent to the anticipated (or known) break-even cut-off grade, the average mineralisation or ore grade, and at a high grade for the deposit. The fourth CRM should be similar to, but different from, one of these three values – typically the average grade value. For small drilling campaigns, it may be necessary to increase the CRM submission rate to ensure that a statistically meaningful number of results are obtained for each CRM.
This week’s 30 Seconds of Info comes from Paul Blackney our Principal Geology Consultant firstname.lastname@example.org
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