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Magmatic Sulfide Deposits - Geology, Geochemistry and Exploration (Hardcover, 2004 ed.)
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Magmatic Sulfide Deposits - Geology, Geochemistry and Exploration (Hardcover, 2004 ed.)
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PGE V-Voisey's Bay (Canada) D -Duluth Complex (USA) K-Kambalda
(Australia) M-Merensky Reef (Bushveld) N -Noril'sk region (Russia)
P-Pechenga(Russia) S-Sudbury (Canada) T-Thompson (Canada) J
-Jinchuan (China) L-Lac des lies (Canada) PR-Platreef (Bushveld)
Po-Portimo Complex (Finland) R-Raglan (Canada) U-UG-2 chromitite
(Bushveld) Z-Great Dyke of Zimbabwe e-Mt Keith (Australia) . a.
-Perseverance (Australia) +-Stillwater (USA) 0 0 0 'c9 -~ Ni+Co Cu
Relative value of Ni+Co Fig. 1. 1. Relative va1ue of the
contributions of Ni+Co, Cu and PGE to the mag- matic su1fide
deposits listed in Table 1. 1 sulfide deposits are closely related
to bodies of mafic or ultramafic rock, and the most convenient way
in which to consider them is in terms of the type of magma
responsible for the rocks with which they are associated. Typically
the type of magma involved bears a close relationship to the tec-
tonic setting within which it was emplaced. The locations of
important deposits, both Ni-Cu dominant and PGE dominant, are shown
in Fig. 1. 2. Considering first Ni-Cu deposits, these are further
divided into six classes (Table 1. 2) on the basis of their
associated magma type. Class NC- 1 (Chap. 3) comprises those
related to komatiitic magmatism. Currently known deposits fall into
two sub-classes, those related to Archean komatiites ( e. g. the
deposits of Western Australia, Zimbabwe and the Abitibi belt of
Canada) and those related to Proterozoic komatiites (e. g. those
ofthe Raglau and Thompson belts which arebothin Canada)l.
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