NI 43-101 Technical report, Surface diamond drilling ... - Iamgold

R a r e E a r t h E l e m e n t E x p l o r a t i o n P r o g r a m M a r c h - 2 0 1 3
W i n t e r - S u m m e r 2 0 1 2 P a g e | 91
Table 15: Summary of the GRE-02 QA / QC results.
GRE-02
REE La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Y
Certified Value 9786 16797 1883 7048 769.2 139.9 262.2 14.62 28.56 2.87 7.96 0.527 2.96 0.42 55.97
Tolerance 221 837 117 456 32.2 9.07 29.6 4.13 1.51 0.27 5.29 0.066 0.91 0.14 4.39
Coefficien tof variation 2.26% 4.98% 6.21% 6.47% 4.19% 6.48% 11.29% 28.25% 5.29% 9.41% 66.46% 12.52% 30.74% 33.33% 7.84%
SGS
April Number of sample 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6
Average value 9658.3 16916.7 1913.3 7406.7 770.0 141.2 232.5 14.2 26.2 3.0 4.8 0.5 2.3 0.3 51.3
1 STD 186.3 318.9 50.5 146.0 20.0 6.8 25.6 2.6 1.0 0.1 0.3 0.1 0.5 0.0 1.2
Coefficient of variation 1.9% 1.9% 2.6% 2.0% 2.6% 4.8% 11.0% 18.1% 3.8% 4.0% 6.3% 12.6% 22.1% 12.9% 2.4%
% Diff. on average 1.3% 0.7% 1.6% 5.1% 0.1% 0.9% 11.3% 3.1% 8.4% 5.7% 39.7% 5.1% 21.2% 24.6% 8.3%
Nb. Outliers 0 0 0 0 0 0 1 0 2 0 0 0 0 0 0
% Outliers 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 16.7% 0.0% 33.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
May Number of sample 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Average value 9545.0 16468.8 1914.4 7186.9 747.5 140.4 234.1 13.9 26.1 3.0 5.1 0.5 2.3 0.3 51.4
1 STD 262.2 406.2 48.8 350.3 28.4 4.7 16.5 2.0 1.2 0.1 0.2 0.1 0.5 0.1 1.7
Coefficient of variation 2.7% 2.5% 2.6% 4.9% 3.8% 3.4% 7.1% 14.7% 4.6% 3.0% 4.5% 10.5% 20.7% 18.2% 3.3%
% Diff. on average 2.5% 2.0% 1.7% 2.0% 2.8% 0.4% 10.7% 4.7% 8.5% 4.5% 36.6% 1.6% 21.9% 21.1% 8.1%
Nb. Outliers 4 0 0 1 1 0 0 0 4 0 0 1 0 0 0
% Outliers 25.0% 0.0% 0.0% 6.3% 6.3% 0.0% 0.0% 0.0% 25.0% 0.0% 0.0% 6.3% 0.0% 0.0% 0.0%
June Number of sample 14 14 14 14 14 14 14 14 14 14 14 14 14 14 14
Average value 9577.9 16578.6 1916.4 7156.4 757.9 138.3 227.8 13.4 25.4 3.0 5.0 0.5 2.1 0.3 50.9
1 STD 184.6 215.5 31.3 183.0 18.9 3.9 15.1 1.3 1.1 0.1 0.1 0.0 0.3 0.0 1.4
Coefficient of variation 1.9% 1.3% 1.6% 2.6% 2.5% 2.8% 6.6% 10.0% 4.3% 4.3% 2.0% 0.0% 12.9% 11.6% 2.7%
% Diff. on average 2.1% 1.3% 1.8% 1.5% 1.5% 1.2% 13.1% 8.6% 11.2% 3.3% 37.1% 5.1% 30.0% 25.2% 9.0%
Nb. Outliers 1 0 0 0 0 0 1 0 9 0 0 0 0 0 0
% Outliers 7.1% 0.0% 0.0% 0.0% 0.0% 0.0% 7.1% 0.0% 64.3% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0%
July Number of sample 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15
Average value 9646.0 16360.0 1952.7 7310.0 772.0 141.0 228.7 13.7 25.2 3.0 5.0 0.5 2.0 0.3 50.3
1 STD 270.4 282.3 54.6 323.2 31.4 5.3 11.4 2.0 0.8 0.1 0.2 0.0 0.0 0.0 1.5
Coefficient of variation 2.8% 1.7% 2.8% 4.4% 4.1% 3.7% 5.0% 14.5% 3.1% 4.3% 3.9% 0.0% 0.0% 8.4% 3.1%
% Diff. on average 1.4% 2.6% 3.7% 3.7% 0.4% 0.8% 12.8% 6.5% 11.8% 4.3% 37.6% 5.1% 32.4% 27.0% 10.2%
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