Chemistry Reference
In-Depth Information
Conclusion
The materials considered in this topic on the basic regularities of REE distribution in
minor and accessory minerals of ultramafic, mafic and some other types of rocks give
grounds to conclude that these minerals are so far an insufficiently studied and, there-
fore, rarely used additional source of information about the features of their trace
element composition and typomorphism that can be used to solve various petrologi-
cal and geochemical problems. On the basis of the existing materials on the subject
we can formulate some relevant, from the author's viewpoint, problems to be solved
within this subject matter in the near future.
A more in-depth study of the basic laws of REE distribution in all varieties of
minor and accessory minerals from rocks of ultramafic and mafic composition
by using more representative collections of minerals from the reference mafic-
ultramafic massifs.
The implementation of detailed geochemical systematization of minor and acces-
sory minerals from the rocks of ultramafic and mafic composition based on an
expanded analytical data on REE distribution in them and the use of multi-
parameter computer methods of discrimination.
To gain more representative and statistically valid estimates of REE distribution
coefficients between minor and accessory minerals of ultramafic and mafic rocks
and their parent melts, as well as between the accessory and rock-forming miner-
als on the basis of the results of the study of various experimental systems.
To continue the studies on crystal-chemical aspects of REE isomorphism in minor
and accessory minerals of ultramafic and mafic rocks by using different experi-
mental techniques.
A more detailed study of REE distribution in the zoned crystals of minor and
accessory minerals of the ultramafic and mafic rocks.
More detail study of forms of finding the chemical and phase composition and
the mechanisms of accumulation of nonstructural (isomorphic) REE impurity
in the minor and accessory minerals of ultramafic and mafic rocks in order to
determine the complex of procedures of sample preparation that can minimize
the error of analyses caused by the presence of such unstructured impurity in the
mineral samples analyzed.
Search WWH ::
Custom Search