Geochemistry Guide 2024

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Qlab - online data platform and retrieval

Depending on the circumstances, studies may need to involve matrix equivalent samples taken through the entire method process, and not simply by using a reagent or water blank.

All our clients have access to our online data platform and retrieval. System called “QLab” (https://qlab.sgs.com) . The tool allows clients to track the status of their samples and access analytical data immediately using a secure retrieval system. It contains important information including job status, turn-around time, scheme/method, client specific quality control data and the results of your analyzes. With this information you can track your performance against the reference materials across the entire project. All results are reported electronically immediately upon completion. Reporting units can be specified as ppb, ppm, g/t, % or oz/tonne (as applicable). SGS will send a copy of all certificates and invoices in PDF format, via email, to the address you specify after which the documents will available in Qlab.

Tailored analysis across the value chain

How precise the analysis needs to be depends on your purpose and where you are in the value chain. For example, during early-stage exploration precision at low concentrations, sensitive and cost effectiveness are usually key - accuracy may not be as important. As a result, a method may be selected providing it has a reasonable threshold. On the other hand, in process of grade control situations accuracy and precision are critical and require commercial grade assays using high precision methodologies. Innovations and leadership SGS takes its role as a leading analytical service provider seriously. We invest in the technology, resources and innovation required to solve the most complex mining challenges. More detailed descriptions of the common analytes, grades and methods follow in this guide, with more information available at your local laboratory. An SGS customer service agent is always available to assist you with analytical technique selection. Contact us at naturalresources@sgs.com

A Trusted Partner

Data turnaround Samples are processed at each SGS

this concept is varied, misused and often confusing. The lower limit (detection limit) is frequently used to market method capabilities but depending upon how this limit is validated and tested, this limit can be misleading. Method choice should not be exclusively selected based on the lower limit but must be well defined based on the circumstances. Statistical analysis must be used both to estimate and test the lower limit at a suitable confidence level. When selecting a method, it is important to consider: • What are the elements of interest and their concentration range? • What is the required precision at or near the concentration of the analyte of interest? • What is the mineral composition or source of my samples and will this affect the detection limit for the elements of interest?

SGS’s Centres of Excellence and major regional laboratories conform to standard requirements for ISO/IEC 17025 as per the published scopes of accreditation. SGS provides analytical services for every stage of your project including: • Exploration • Developmental Studies • Mine Production • Shipment • Trade • Mine Closure Analytical methods and limits At SGS, our laboratories take pride in our determination of method specific limits to ensure confidence in the results and that they are fit for purpose. In mineral analysis, the concept and application of detection limits is not defined universally nor is it governed by a regulated policy. The terminology used to describe

laboratory as promptly as possible. Sample batches requiring turnaround commitments outside contractual arrangements should be discussed with the appropriate laboratory customer services personnel.

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