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

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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 | 60 13.7 Drill holes results, 2012 REE exploration program. The 2012 exploration and definition drilling program confirmed the REE mineralisation distribution homogeneity. The 100 x 100 metres drilling mesh performed help the geology team to define the core of the REE rich carbonatite and the relationship with the surrounding units. The transition zone returned interesting results on large interval and must be evaluated for it economic value. The new 100m x 100m drilling pattern increased the resource confidence from sub-surface to 350m below. The 2011 inferred resources were all transformed in indicated resources. The drilling accuracy from 350m to 700m, 100m x 200m drilling mesh, added inferred resources at depth. Even if the resources calculation was limited to 700m, the deepest holes confirmed the mineralisation continuity down to 1200m below surface. Mineralogical studies are under progress to evaluate the REEs mineral affinities and distribution. The 2012 drill hole reached deeper than ever historically. Preliminary interpretation based on the core description and the Assays results show a relationship between the REEs mineral content and the deepness. Pass 1000m deep, the texture of the hosting carbonatite and the lanthanide minerals change. Simultaneously, the average REE content slightly increased. This observation are currently investigated and tested by a master project conjointly realised by IAMGOLD-Niobec and the UQAC University. The deep holes also tested gravimetric anomaly hypothesis. In 2011, based on theory projection, an ultra-mafic source, located at the base of the Saint-Honoré carbonatite complex, was interpreted to be the explanation of the gravimetric anomaly. Excepted few angular enclaves of mafic to ultra-mafic rock intercepted by drilling and observed in the drift, no major units was discovered. The ultra-mafic basement theory may be transferred to a lower level. The geophysics interpretations plan the anomaly around 500m deep. This may be explained by the vertical distribution of the barium. From the surface and down to 200m, the barium is completely depleted. Assays are returning value under the limit detection. Abruptly, the average barium contain rise above 3%, higher than all the other carbonatite facies of the complex. The phenomenon is also slightly observed in the rock density.. Over all, the 2012 drilling exploration program returned excellent results and a lot of new geological data that will be interpreted in 2013. Each drill hole results are summarised in Table 7 below. 3400, chemin du Columbium, St-Honoré-de-Chicoutimi, QC G0V 1L0 Canada – tel. : 418 673-4694 Fax : 418 673-3179 E-mail : info.niobec@iamgold.com www.niobec.com
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 | 61 Table 7: Drill hole results summary, 2012 REEexploration campaign. HOLE # From (m) To (m) Lenght (m) TREO (%) HREO (%) LA2O3 (PPM) CE2O3 (PPM) PR2O3 (PPM) ND2O3 (PPM) SM2O3 (PPM) EU2O3 (PPM) GD2O3 (PPM) TB2O3 (PPM) DY2O3 (PPM) NB2O5 (PPM) MO (PPM) 2012-REE-029 44.5 651 606.5 1.348 0.031 3134.179 6373.003 708.999 2621.721 301.053 66.208 160.424 17.852 63.785 1602.525 104.750 including 44.5 450 405.5 1.704 0.037 4028.978 8085.264 889.943 3259.118 366.437 80.559 196.068 21.968 75.272 1514.108 116.286 450 651 201 0.616 0.017 1291.947 2847.761 336.466 1309.434 166.438 36.662 87.040 9.377 40.135 1784.559 81.000 2012-REE-030 52.5 639 586.5 0.991 0.027 2254.773 4665.385 534.016 1916.772 231.980 54.440 128.701 15.953 67.702 1525.154 62.945 including 52.5 330 277.5 1.564 0.035 3654.043 7450.806 841.897 2964.794 343.897 78.498 178.680 19.915 70.977 1192.417 97.021 330 423.9 93.9 0.592 0.032 1275.391 2671.251 297.700 1096.762 152.924 42.481 124.519 21.797 126.604 2503.195 24.688 423.9 639 215.1 0.405 0.014 824.362 1837.771 228.537 883.857 117.894 27.678 63.922 8.073 37.156 1534.119 34.514 2012-REE-031 65.3 597 531.7 1.284 0.025 2682.281 6029.893 730.834 2809.689 317.195 67.908 136.238 12.356 36.086 1267.224 155.945 including 65.3 261.3 196 2.142 0.036 4805.437 10164.129 1198.715 4406.347 473.565 99.394 194.402 17.045 46.363 880.446 245.574 261.3 527.4 266.1 0.833 0.019 1545.688 3840.351 490.087 2004.733 237.655 51.547 105.186 9.467 28.176 1219.820 114.371 527.4 597 69.6 0.526 0.017 881.534 2435.775 297.943 1270.869 169.110 39.369 86.590 9.784 36.296 2538.883 56.167 2012-REE-032 47.6 651 603.4 1.441 0.028 3249.840 6816.394 799.527 2913.733 324.804 68.538 145.393 14.609 48.701 1640.016 166.000 including 47.6 402 354.4 2.122 0.034 4857.683 10117.557 1176.361 4255.378 457.286 93.042 188.689 16.642 41.204 835.544 240.189 402 453 51 0.670 0.017 1459.067 3060.486 377.255 1440.823 175.988 42.230 89.294 8.734 30.042 1709.393 136.588 453 651 198 0.382 0.019 739.025 1681.674 211.721 813.109 118.245 30.018 79.810 12.365 67.366 3109.202 36.439 2012-REE-033 42 1338 1296 2.160 0.032 5845.375 10515.933 1077.193 3461.655 343.496 80.095 169.741 17.496 57.317 1466.517 113.088 including 42 162 120 1.227 0.024 3245.308 5728.377 626.528 2151.294 253.766 54.072 123.839 13.223 48.230 2269.045 78.488 162 1002.4 840.4 2.132 0.037 5516.814 10318.611 1095.450 3605.905 379.035 89.644 194.732 20.522 68.293 1657.884 138.132 3400, chemin du Columbium, St-Honoré-de-Chicoutimi, QC G0V 1L0 Canada – tel. : 418 673-4694 Fax : 418 673-3179 E-mail : info.niobec@iamgold.com www.niobec.com
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Item 1. TITLE PAGE NI 43-101 Techni
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R a r e E a r t h E l e m e n t E x
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2012-REE-038 2012-REE-052 2011-REE-
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2012-REE-032 2012-REE-03 651.00 201
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2012-REE-061 2012-REE-037 639.00 20
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Legend TREO (pct) 0.000 0.250 0.250
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Legend TREO (pct) 0.000 0.250 0.250
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Legend TREO (pct) 0.000 0.250 0.250
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Appendix 3: Eon Geosciences Inc. re
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Liste des figures Figure 1 : Hélic
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. 3.3. Spécifications de vol 3.3.1
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. 4. Équipements utilisés 4.1. H
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. Système de navigation : Ag-Nav L
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. 6. Personnel Le personnel d’EON
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. 8. Traitement des données L’ob
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. données en profil, où les donn
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. 9. Produits finaux 9.1. Particula
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11. Annexe A - Résultats des tests
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. EON Geosciences Inc. FOM Test: MA
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. 12. Annexe B - Description des ch
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IAMGOLD Corporation Page 158 Levé
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. EON GEOSCIENCES INC Daily report
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