Abstract
CONSIDERING the percentage of certain constituents in olivine and clinopyroxene separated from rocks of the Skaergaard intrusion, Greenland, L. R. Wager and R. L. Mitchell1 determined, for these minerals, data which show a lower concentration of vanadium, chromium, nickel, magnesium (plus titanium and phosphorus in the case of vanadium?, compare below), and a higher iron concentration the later the mineral was formed during the crystallization differentiation of the ancient Skaergaard magma. Comparing olivine and clinopyroxene containing similar relative concentrations of magnesium and iron, the former mineral is seen to be richer in chromium, cobalt and nickel than the latter, whereas the latter is seen to be richer in vanadium (plus titanium?, compare below) than the former.
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References
Nature, 156, 207 (1945).
Nature, 155, 753 (1945).
Min. Mag., 26, 283 (1943).
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LUNDEGARDH, P. Geochemistry of Magmatic Iron Ore. Nature 157, 625–626 (1946). https://doi.org/10.1038/157625b0
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DOI: https://doi.org/10.1038/157625b0
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