Ilmenites - Rare Earth Elements in Ultramafic and Mafic Rocks and their Minerals - page 124

Figure 3.3 The graph of coefficients of REE and other trace elements distribution between ilmenites
and melts (data [Zack & Brumm, 1998]).
Figure 3.4 The graphs of coefficients of REE distribution between ilmenites and melts, as well as
between ilmenites and some coexisting minerals (data Table 3.3).
Lu, Yb and Tm are slightly higher than their content in C1 chondrite. In many studied
ilmenites the chondrite-normalized HREE contents exceed the LREE contents. At the
same time, abnormally high contents of LREE were ascertained in some ilmenites of
kimberlites from Yakutia. In all ilmenites of gabbros and pyroxenites from Tigrovy
massif, as well as in many of their samples from gabbros of Skaergaard massif, a more
or less significant Eu excess was observed, whereas, in their certain samples from
gabbros of Skaergaard massif, the same for the rhyolites, on the contrary, the deficit