Fire assay is a lead-collection/fusion, for refinement of total sub-sample into a silver dore bead. The silver bead is dissolved in an aqua-regia digestion and analysis by atomic absorption (AA).
|Au @ 30g AA finish – Lower Detection Limit 5ppb||$18.25|
|(Note: High sulphide samples are not effectively fused when fire assayed at 30g, therefore the subsample size will be reduced to 15g or lower where needed for proper fusion.)|
|Au,Pt, Pd (30g) ICP finish 3-2500 ppb||$25.05|
Total Pulp Metallics
Total pulp metallic analysis is when the whole sample is crushed to -10mesh and pulverized to 95% -150mesh. The total sample is then weighed and screened 150mesh. The +150mesh fraction is fire assayed for Au, and a 30g subsample of the -150mesh fraction is fire assayed for Au. A calculated weighted average of total Au in the sample is reported as well.
|Au (Total Pulp Metallics) Analysis only||$36.00|
|2 – 30g minus fractions||$54.00|