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Published online by Cambridge University Press: 01 May 2009
The constitution and origin of anthracite has long been a question of absorbing interest, but until very recently the theories which were brought forward dealing with this subject, owing largely to the insurmountable difficulty of preparing thin slices upon which micropetrological work could be done, have lacked substantial evidence either to support or refute them. Lately, however, a new method which will materially widen our knowledge and advance research on the anthracite problem has been evolved.
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