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 | 97
Table 17: REE mineral resources by depth.
Indicated resources
Inferred resources
Level
Tonnage
Millions T.
Grade
% TREO
TREO Cont.
Million kg
Tonnage
Millions T.
Grade
% TREO
TREO Cont.
Million kg
10000 4.8 1.77 85.9 0.0 0.00 0
9950 65.3 1.74 1133.6 6.2 1.37 85.1
9900 82.7 1.59 1312.8 8.7 1.41 122.0
9850 84.5 1.59 1345.7 6.1 1.38 83.6
9800 86.3 1.60 1380.0 3.8 1.25 47.5
9750 85.0 1.62 1375.5 2.3 1.15 26.8
9700 82.2 1.70 1400.4 1.2 1.23 14.9
9650 40.5 1.72 696.4 41.7 1.70 710.4
9600 - - - 79.1 1.76 1390.0
9550 - - - 74.9 1.87 1398.0
9500 - - - 71.9 1.88 1355.4
9450 - - - 69.6 1.88 1307.1
9400 - - - 67.2 1.95 1311.1
9350 - - - 63.8 1.93 1230.9
9300 - - - 30.7 1.85 568.7
TOTAL 531.4 1.64 8,730.3 527.2 1.83 9,651.5
NOTES:
• Results are presented in situ, unconfined and undiluted
• Resource modeling used 15,973 samples from the 2011 and 2012 drilling program
with 54 elements assayed (with re-assays for high grade samples).
19.1.1 Methodology
19.1.1.1 Software
The Gems LabLogger and Logger software application from Gemcom Software International
Inc. were used for core logging, database management, modeling the geology, analyzing the
data, to perform the grade interpolations, to create and manage the block model as well as
report the mineral resources. The software was used by Louis Grenier and supervised by
Réjean Sirois, the qualified person for the resource evaluation according to the NI 43-101.
19.1.1.2 Data
The systematic drilling program of 2011 and 2012, confirmed the results found in the
historical drill holes. The question was raised as to whether the historical data should be used
in the mineral resource estimation of 2012. Every project goes through the same process of
discovery and evaluation from sparse data to detailed data. Each activity from exploration
through development and production has different goals and method of investigation.
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