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Metallic screening

Improve knowledge of gold occurrence & distribution within your deposit.

A well-designed screen fire assay program paired with robust geology and resource models can aid in determining the proportion and location of coarse gold within a deposit. Screen fire assay data can provide early indications of process methodology for gold exploration projects, such as an indication of the proportion of gravity recoverable gold present within a deposit, which in turn can impact a project’s economics and potential development timescale.

Peneiramento metálico

Gold screen fire assay

Screen fire assays use a larger volume of sample (typically 1kg) which is screened (usually to -75 micron or -106 micron) to separate coarse gold particles from fine material. To aid in distinguishing the proportion of coarse and fine gold within the sample the following results are included in a screen fire assay report:

  • The results of duplicate fine fraction assays, plus the mean of the results.
  • The coarse fraction gold assay.
  • Weights of both the fine and coarse fractions.
  • A "total" gold calculation for the 1kg sample based on the weighted average of the coarse and fine fractions.

 

Análise de metais preciosos

There are many different options available for metallic screening, a selection of the most popular methods are detailed below:

Code Analyte Range (ppm) Description
Au_SCR21 Au

0.05-100,000

(0.01-1,000 mg)

 1kg pulp screened to 106 microns. Other screen sizes available. Duplicate 30g assay on screen undersize. Assay of entire oversize fraction.
Au_SCR24 Au 1kg pulp screened to 106 microns. Other screen sizes available. Duplicate 50g assay on screen undersize. Assay of entire oversize fraction.
Au_SCR24B Au 1-2kg pulp screened to 106 microns. Duplicate 50g assay on screen undersize. Assay of entire oversize fraction.
Au_SCR24C Au 2-3kg pulp screened to 106 microns. Duplicate 50g assay on screen undersize. Assay of entire oversize fraction.
 Au_SCR22 Au  1kg pulp wet or dry screened to 75 microns. Other screen sizes available. Duplicate 30g assay on screen undersize. Assay of entire oversize fraction. 

Downloads

pdf

Gold Screen Fire Assay Technical Note

 
v.1.1.976