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Explanation for Plate 9.
Plate 9--Calcite in "coal balls." A, Photomicrograph of a coal ball taken with a reflecting microscope using
obliquely incident light. The material in the center of the boxlike cells is calcite; the original woody plant
material is preserved in cell walls (X 80). B, Same, showing different section of plant cells (X 85).
Petrographic Study of Southeastern Kansas Coals, by William W. Hambleton
Originally published in 1953 as Kansas Geological Survey Bulletin 102, Part 1.
http://www.kgs.ku.edu/Publications/Bulletins/102_1/index.html
Nov. 2005
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