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 | 86
Table 14: Summary of the OREAS 146 QA / QC results, REE exploration project.
Oreas-146
REE La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Y
Certified Value 2513 4691 548 2182 441 127 359 47.2 224 36.8 87.7 9.9 53.5 6.3 905
Tolerance 185 360 36 192 36 9 23 3.4 16 2.7 7 0.8 3.9 0.3 53
Coefficient of variation 7.36% 7.67% 6.57% 8.80% 8.16% 7.09% 6.41% 7.20% 7.14% 7.34% 7.98% 8.08% 7.29% 4.76% 5.86%
SGS
April Number of sample 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
Average value 2532.0 4768.0 540.0 2236.0 442.0 124.8 368.4 49.8 231.0 37.9 84.6 10.1 54.4 6.8 897.4
1 STD 71.9 84.1 7.1 31.3 8.4 2.2 7.8 0.8 2.4 0.4 1.8 0.1 1.1 0.2 25.1
Coefficient of variation 2.8% 1.8% 1.3% 1.4% 1.9% 1.7% 2.1% 1.7% 1.1% 1.0% 2.1% 1.5% 2.1% 2.4% 2.8%
% Difference on average 0.8% 1.6% 1.5% 2.5% 0.2% 1.7% 2.6% 5.5% 3.1% 3.0% 3.6% 2.2% 1.7% 7.6% 0.8%
Nb. Outliers 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
% Outliers 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 20.0% 0.0%
May Number of sample 18 18 18 18 18 18 18 18 18 18 18 18 18 18 18
Average value 2553.3 4763.3 553.9 2230.0 448.9 127.4 355.1 47.1 224.6 36.5 85.8 10.0 53.6 6.6 900.1
1 STD 103.1 156.5 17.5 99.2 14.5 4.8 14.5 1.7 8.3 0.8 2.4 0.3 1.3 0.3 28.1
Coefficient of variation 4.0% 3.3% 3.2% 4.4% 3.2% 3.8% 4.1% 3.7% 3.7% 2.2% 2.8% 2.5% 2.4% 4.4% 3.1%
% Difference on average 1.6% 1.5% 1.1% 2.2% 1.8% 0.3% 1.1% 0.3% 0.3% 0.9% 2.2% 1.0% 0.2% 4.7% 0.5%
Nb. Outliers 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0
% Outliers 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 5.6% 0.0%
June Number of sample 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
Average value 2533.8 4755.0 551.3 2197.5 451.3 126.1 365.8 48.3 222.9 37.4 87.7 10.1 53.6 6.5 897.0
1 STD 76.0 125.2 18.9 94.4 15.5 3.7 7.3 2.3 5.1 0.8 1.4 0.2 1.2 0.2 13.2
Coefficient of variation 3.0% 2.6% 3.4% 4.3% 3.4% 2.9% 2.0% 4.7% 2.3% 2.0% 1.6% 1.9% 2.2% 2.8% 1.5%
% Difference on average 0.8% 1.4% 0.6% 0.7% 2.3% 0.7% 1.9% 2.2% 0.5% 1.6% 0.0% 2.0% 0.2% 3.8% 0.9%
Nb. Outliers 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
% Outliers 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 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 2555.3 4743.3 562.0 2231.3 454.7 128.4 360.9 48.5 229.1 37.2 86.9 10.1 54.0 6.6 915.2
1 STD 57.2 99.4 14.2 80.3 15.5 3.9 13.6 1.3 6.0 0.7 2.3 0.3 1.5 0.2 26.8
Coefficient of variation 2.2% 2.1% 2.5% 3.6% 3.4% 3.1% 3.8% 2.7% 2.6% 1.8% 2.7% 2.9% 2.7% 2.7% 2.9%
% Difference on average 1.7% 1.1% 2.6% 2.3% 3.1% 1.1% 0.5% 2.7% 2.3% 1.2% 0.9% 2.5% 0.9% 4.2% 1.1%
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