Abstract
PARTICIPANTS in the northern excursion of the seventeenth International Geological Congress in Russia were afforded ample facilities for inspecting recent mining developments in the Kola Peninsula, and especially the unique apatite deposits at Kirovsk. The latter occur within the world's largest known massif of nepheline-rocks, the Khibine Tundra*.
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TYRRELL, G. Apatite, Nepheline, and Rare-Earth Mining in the Kola Peninsula. Nature 141, 354–355 (1938). https://doi.org/10.1038/141354a0
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DOI: https://doi.org/10.1038/141354a0
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