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 | 96
and reach a maximum length of 1,337 metres. The two deepest holes demonstrated that the
REE zone persists uninterrupted at depth and show comparable or higher grades to other
intercepts in the resource model. Based on the low variability and all the preceding
information, the mineral resources have been classified by level. The indicated resources are
from sub-surface to level 9650 (350m depth) and the inferred resources are from levels 9650
to 9300 (700m depth).
All assay results are reported in Total Rare Earth Element Oxides (“TREO”). The main rare
earth elements found are LREEs: Cerium (Ce), Lanthanum (La), Neodymium (Nd),
Praseodymium (Pr) and Samarium (Sm), and HREEs: Gadolinium (Gd), Europium (Eu),
Dysprosium (Dy) and Terbium (Tb).
Table 16: REE mineral resources by grade groups.
Indicated resources
Inferred resources
Tonnage
GRADEGROUP
Millions T.
% TREO 3
> 2.5
2.0 to 2.5
1.5 to 2.0
1.0 to 1.5
0.5 to 1.0
TOTAL
Grade
% TREO
32.1 2.72
116.9 2.19
175.0 1.78
120.8 1.25
86.6 0.77
531.4 1.64
TREO Cont.
Millions kg
873.2
2,562.9
3,109.1
1,516.0
669.1
8,730.3
Tonnage
Millions T.
Grade
% TREO
82.1 2.83
141.3 2.22
140.1 1.77
90.2 1.27
73.4 0.76
527.2 1.83
TREO Cont.
Millions kg
2,326.5
3,137.4
2,483.4
1,145.2
559.2
9,651.7
3 TREO is for Total Rare Earth Oxides which include: La 2O 3, Ce 2O 3, Pr 2O 3, Nd 2O 3, Sm 2O 3, Eu 2O 3, Gd 2O 3, Tb 2O 3,
Dy 2O 3, Ho 2O 3, Er 2O 3, Tm 2O 3, Yb 2O 3, and Lu 2O 3.
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