كاني سنگين
The early ‘‘golden period’’ of heavy mineral analysis from 1870 to the Second
World War was in stark contrast to the general scepticism towards their value
thereafter as a result of the advent of glamorous, and supposedly better new techniques,
which led many geologists to regard heavy mineral studies as uninteresting or
useless. However, the technique was not completely neglected. Throughout the fifties
and sixties, a number of researchers used heavy minerals successfully on a wide range
of geological problems, which contributed to a better understanding of the factors
that modify heavy mineral suites, and opened the way for more sophisticated interpretations.
The expansion of heavy mineral studies into hitherto neglected fields,
the application of advanced analytical techniques and of numerical data analysis
have all been important advances, which have led to a rejuvenation of interest.
Consequently, heavy mineral analyses are now more frequently employed and yield
very important results
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