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 | 48
carbonatite begins with a strongly altered breccia facies (hematite, chlorite and siderite)
(BRC1L) down to 98 m. The alteration decreased (hematite and chlorite) down to 207 m.
From 207 m to 564 m, the dolomitic mineralized breccia facies is logged (BRC1L).
The mineralisation is observed all along the hole but increased at depth. The 2012-REE-039
returned a value of 1.802% TREO / 508.3 m (from 55.7 m) including 0.031% HREO /
508.3 m.
13.5.12 2012-REE-040
The 2012-REE-040 is situated at the center east of the REE zone (MTME 256340.87:
MTMN 5378225.07). It was drilled at 031° (true North) with a dip of -50°. The objectives
were to increases the REE definition by following a drilling mesh of 100m x100m and
intersect the North contact in depth. The overburden is 8.60 m thick. From 8.60 m to 11.80
m, the Trenton limestone covered the carbonatite. A massive calcitic and dolomitic
carbonatite facies (C1L) strongly altered (hematite, chlorite and siderite) is logged down to
102.70 m. A small breccia facies (BRC1L) cut the massive facies from 102.70 m to 142.40
m. From 142.40 m to 729 m, there is a layering between massive dolomitic carbonatite and
calcitic carbonatite (C10 and C1C). Two breccias facies, from 405.30 m to 430.80 m and
from 543 m to 600.50 m, disturbed the massive textured intervals.
The mineralization is homogeneous all along the hole. The 2012-REE-040 returned a value
of 2.134% TREO / 717.2 m (from 11.8 m) including 0.028% HREO / 717.2.3 m.
13.5.13 2012-REE-041
The 2012-REE-041 is situated in the center area of the REE zone (MTME 256292.71:
MTMN 5378307.19). It was drilled at 028° (true North) with a dip of -50°. The objectives
were to complete the drilling pattern of 100m x 100m and intersect the north contact at depth.
The overburden is 6.80 m thick. From 6.80 m to 36.20 m, The Trenton limestone covered the
carbonatite. From 36.20m, the calcitic breccia carbonatite facies (BRC1C) is strongly altered
(hematite, chlorite and siderite) down to 99.70 m. The same breccia facies becomes less
altered down to 342 m. From 342 m to 434.10 m, a transition zone is noted where the
carbonatite progressively changed from a calcitic to a dolomitic facies. From 434.10 m to
734.10 m, the dolomitic carbonatite (C1L) dominated but is cut by a large breccia facies
(BRC1) between 539.70 m to 622.20. From 734.10 m to 774, the dolomitic breccia
carbonatite facies completed the hole.
The lanthanide mineralization is transitionally decreasing in the lower part of the hole
marking the North contact at depth with the not mineralized carbonatite. The hole 2012-
REE-041 returned an overall value of 1.798% TREO / 697.9m (from 36.2m) including
0.029% HREO / 697.9m. The best interval, without not mineralized breccia facies, returned
a value of 1.987% TREO / 503.5m (from 36.2m) including 0.32% HREO /503.5ms.
13.5.14 2012-REE-042
The 2012-REE-042 is situated in the center area of the REE zone (MTME 256208.17:
MTMN 5378339.99). It was drilled at 029° (true North) with a dip of -52°. The objective
3400, chemin du Columbium, St-Honoré-de-Chicoutimi, QC G0V 1L0 Canada – tel. : 418 673-4694 Fax : 418 673-3179
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