Anthraxolite is the name commonly given to anthracite-like materials that occur in veins and as disseminated masses in sedimentary rocks. Despite the fact that no genetic relationships between anthraxolite and oil have been proved to be universal, discoveries of anthraxolite nearly always initiate special interest because it is believed that they may indicate the presence of nearby oil.The primary objective of this investigation has been to determine if there could be found in the laboratory a means of establishing a consanguinity between anthraxolite and similar natural high-carbon compounds, whose occurrences permit more than one interpretation of origin, and coal or between these same substances and oil. Ash content analyses and thermal, x-ray diffraction, "glow point," and spectrographic data obtained from anthraxolite samples from numerous localities have been compared to those same data obtained from coals of diverse ranks, lignite, numerous asphaltic materials, paraffin- and asphalt-base oils, heavy petroleum residues, quisqueite, natural graphite, and graphite powders derived from coal coke and from petroleum coke.Three conclusions have been reached: 1) anthraxolite with an ash content of less than two or three percent probably, although not necessarily, was derived from oil or oil-like material(s); 2) anthraxolite with an ash content of more than two or three percent, unless its occurrence is definitive, could be consanguineous with either coal or oil; and 3) no way has been found to establish a genetic relationship between anthraxolite and coal versus oil by the other methods investigated.

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