Lithium Argentina AG

Table 37: Statistical Analysis of Duplicate Samples – ASANOA

The assay results for duplicate samples at both ASANOA and SGS laboratories demonstrate a high degree of precision and consistency for key parameters of lithium and potassium. The highest Relative Percent Difference (RPD) is only 2% for ASANOA and 0.5% for SGS. This is significantly lower than the commonly accepted 10% cut-off and suggests that the laboratory’s analytical procedures are consistently producing results that are in close agreement with each other.

Max-min plots for each laboratory are displayed from Figure 76 and Figure 77. These show the maximum versus minimum values for each pair of samples, and the failure line is represented by a hyperbolic function (𝑌 2 = 𝑚 2 𝑋 2 + 𝑏 2), where m is the slope of the asymptote and b the intersection at the y axis. The failure line was calculated based on a 10% relative error allowance.

The standard threshold for an acceptable number of failures is typically set at 10%. However, given the limited sample size and the observation that there are 2 failures for both lithium and potassium that are marginally beyond the 10% relative error cut-off, a failure rate of 25% is deemed acceptable in this specific instance. If the failures found on the limit of the failure line were deemed to be acceptable, the percentage of failure would change to 6.25% and 12.5% respectively.

Figure 76 and Figure 77 show the max-min plots for SGS, and duplicate samples are considered acceptable for both lithium and potassium, as the percentage of failures for each element falls below the 10% cut-off. It is noteworthy that three registered failures for lithium are only marginally beyond the 10% threshold, indicating high precision within the SGS laboratory.