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 | 28
Project Country Owner MR (Mt)
TREO
(wt%)
TREO
(Mt)
In-Situ TREO
($/t(MR))
Basket Price
($/kg)
Mount Weld Duncan AUS Lynas Corporation Ltd. 8.99 4.84 0.44 2586 53
Mountain Pass USA Molycorp Inc. 31.55 6.57 2.07 1686 26
Nechalacho Basal CAN Avalon Rare Metals Inc. 125.72 1.43 1.80 883 62
Nechalacho Upper CAN Avalon Rare Metals Inc. 177.73 1.32 2.35 644 49
Ngualla TZA Peak Resources Ltd. 170.00 2.24 3.82 773 34
Niobec CAN IAMGOLD Corporation 466.80 1.65 7.70 631 38
Nolans Bore AUS Arafura Resources Ltd. 47.16 2.62 1.24 1054 40
Norra Kärr SWE Tasman Metals Ltd. 58.10 0.59 0.34 425 72
Round Top USA Texas Rare Earth Resources Corp. 1033.83 0.06 0.66 42 66
Sarfartoq GRL Hudson Resources Inc. 8.34 1.72 0.14 656 38
Songwe MWI Mkango Resources Ltd. 31.75 1.48 0.47 654 44
Sørensen GRL Greenland Minerals and Energy Ltd. 242.00 1.10 2.66 388 35
Steenkampskraal ZAF Great Western Minerals Group Ltd. 0.17 16.54 0.03 6551 40
Strange Lake Enriched CAN Quest Rare Minerals Ltd. 20.02 1.44 0.29 979 68
Strange Lake Granite CAN Quest Rare Minerals Ltd. 472.46 0.87 4.12 520 60
Tantalus MDG Tantalus Rare Earths AG 130.00 0.08 0.10 41 52
Two Tom CAN Rare Earth Metals Inc. 40.64 1.18 0.48 451 38
Wigu Hill TZA Montero Mining and Exploration Ltd. 3.30 2.59 0.09 535 21
Wolverine AUS Northern Minerals Limited 1.44 0.73 0.01 778 107
Xiluvo (JV) MOZ Galileo Resources PLC 1.11 2.03 0.02 873 43
Xiluvo (JV) MOZ Rare Earth International Ltd. 1.11 2.03 0.02 873 43
Zandkopsdrift (JV) ZAF Frontier Rare Earths Ltd. 42.48 2.23 0.95 989 44
Zandkopsdrift (JV) ZAF Korea Resources Corp. 42.48 2.23 0.95 989 44
Zone 3 GRL Greenland Minerals and Energy Ltd. 95.30 1.16 1.11 404 35
10.2 Carbonatite-associated deposits
Carbonatites are igneous rocks that contain more than 50 per cent carbonate minerals (IUGS).
They are thought to originate from carbon dioxide-rich and silica-poor magmas from the
upper mantle. Carbonatites are frequently associated with alkaline igneous provinces and
generally occur in stable cratonic regions, commonly in association with areas of major
faulting particularly large-scale rift structures.
More than 500 carbonatites occurrences are documented worldwide, with the main
concentrations in the East African Rift zones, eastern Canada, northern Scandinavia, the Kola
Peninsula in Russia and southern Brazil (Woolley and Kjarsgaard, 2008). Carbonatites take a
variety of forms including intrusions within alkali complexes, isolated dykes and sills, small
plugs or irregular masses that may not be associated with other alkaline rocks. Pipe-like
bodies, which are a common form, may be up to 3-4 km in diametre (Birkett and Simandl,
1999).
Intrusive carbonatites (Figure 7) are commonly surrounded by a zone of metasomatically
altered rock, enriched in sodium and/ or potassium. These desilicified zones, known as
fenite, develop as a result of reaction with Na-K-rich fluids produced from the carbonatite
intrusion.
3400, chemin du Columbium, St-Honoré-de-Chicoutimi, QC G0V 1L0 Canada – tel. : 418 673-4694 Fax : 418 673-3179
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