By Clarence Karr
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0145 m m . to several m illim eteis. Cellular structure is usually distinctive, revealing functional nature of plant tis sues. Intensity of color in creases with rank from yellowish to orange, bright red, and dark red. D erived from wood, bark, root, leaf tissues, and tissues of certain fruiting organs of herbs, shrubs, and trees; retains wellpreserved structural evidence of original forms. Translucent humic matter. 0145 mm. thick, small irregularly shaped particles, and aggregated masses of closely packed particles.
They are derived pre sumably from charring of plant tissues. Certain inertinites may be the result of intensive biochemical processes (Teichmüller, 1950). Inertinite derives its name from the fact that it is inert or semi-inert during normal carbonization processes in a retort, although micrinite may even be considered as a reactive maceral (Teichmüller, 1974a). Depending on their shape, size, degree of preservation of cellular structure, and intensity of charring, inertinites are subdivided into fusinite, semifusinite, macrinite, micrinite, sclerotinite, and inertodetrinite (Figs.
Ting, F. T. , and Spackm an, W. (1975). C. R. Int. Congr. Carboniferous Stratigr. , 7th, Krefeld, 1971 4, 305-31 1. , and de Ruiter, E. (1966). Adv. Chem. 55, 3 32 -343. ANALYTICAL METHODS FOR COAL AND COAL PRODUCTS, VOL. I Chapter 2 The Reflectance of Coal Alan Davis DEPARTMENT OF GEOSCIENCES THE PENNSYLVANIA STATE UNIVERSITY UNIVERSITY PARK, PENNSYLVANIA I. II. III. IV. V. VI. VII. VIII. I. Introduction The O ptical P roperties of V itrinite and O ther Macerals A. V itrin ite Reflectance and Its R elation ship to R efractive and A bsorption Indices B.
Analytical methods for coal and coal products, Volume 1 by Clarence Karr