Fire Assay: How Gold Grade Is Measured
Fire assay gold grade explains how fire assay measures gold in tailings samples and why it is the standard method for defining retreatment grade.
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Blogs & Insights / Metallurgy & Testwork
Metallurgy & testwork
How gold grade in tailings is actually measured, and the testwork sequence, from fire assay through particle size and GRG testing, that turns a resource estimate into a defensible flowsheet.
Particle Size, Liberation and Recovery
Particle size determines whether gold is liberated enough to recover, and P80 is the single grinding parameter that most affects how much a plant captures.
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The GRG Test: Gravity Recoverable Gold
The GRG test measures how much gold in a sample is gravity recoverable, telling a project whether a gravity circuit is worth building.
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