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Crawford was interested in the study of minerals and other chemicals and spent some time analyzing the mineral known as baryte , a primary source of the element barium.
Crawford was surprised to find that a small portion of baryte was always left over after all other known elements had been identified.
The carnelian fortifications in these limbs are typical of the colorful chalcedony serving as cementing agents in conglomerates and replacing barite crystals and other fossils in the Brushy Basin sediments.
It occurs with native sulfur, realgar, calcite, and barite in veins cutting marl at Luceram and Duranus, France.
Vein minerals are ferroan dolomite, barite , and colorless and brown crystals of calcite that are sometimes coated with oil.
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