 | | Journal (article/letter/editorial) | | of Geology, Lakehead University, Thunder Bay, Ontario P7B 5E1, Canada a r t i c l e i n f o Article...production of Nb, with the primary St. Honoré carbonatite and other sources accounting for only for 7 and...individual petrographically-defined units of carbonatite contain distinct suites of pyrochlore. Bulk rock...10 times or more above those of the primary carbonatite. Commonly, pyrochlores in laterites are fine grained...[Araxá and Catalão-II (Brazil) and St. Honoré (Canada)]. All produce ferroniobium alloy from pyrochlore |  | | Book | | South Africa 189 3.4.2. The Mackenzie dyke swarm, Canada 190 3.4.3. Parami-Etendeka dykes 192 3.5 Intracontinental...troctolite-anorthosite complexes 8.4.1. Voisey's Bay Ni-Cu-Co 8.5 Komatiite-related magmatic ore deposits...from the 3 Ga Lumby 1ake greenstone be1t, Ontario, Canada. Geo1ogy, 26: 719-722. PARTONE CHAPTERONE...in part, to thermal diffusion and to the surface area of the parcel in question. In other words, the Rayleigh's...S wave velocities at the CMB, within a dome-like area of about 250 km wide and 40 km high. This dome-like |
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