Total Pulp Metallics
Whole-sample screened fire assay for coarse-gold mineralization, where any single 30 g scoop can miss — or wildly overstate — the nugget effect.
Coarse, free gold never distributes evenly through a pulverized sample, so a single subsample can under- or over-call the true grade. The metallics procedure removes that lottery. The entire sample is crushed and pulverized, then screened at 150 mesh; because native gold is malleable, it smears rather than milling fine, and coarse particles report to the oversize fraction.
The complete +150 mesh fraction is fire assayed as one charge, so every coarse gold particle is captured in the result. A 30 g charge of the homogenized −150 mesh fraction is assayed alongside it, both fraction weights are recorded, and the reported value is the weight-averaged total gold for the whole sample, with the individual fraction assays included for transparency. Screening at 200 mesh and duplicate assays of the minus fraction are available on request.
Total pulp metallics
| Element | Detection limit | Finish | Screen |
|---|---|---|---|
| Au | 5 ppb | Fire assay, AAS | 150 mesh (200 mesh available) |
Gold on both fractions is determined by fire assay with an AA finish; the reported value is the weight-averaged total gold for the whole sample.