Polarized Light Microscopy Digital Image Gallery

Bituminous Coal

In the series of carbonaceous fuels that ranges from peat to anthracite, bituminous coal is of middle rank, containing intermediate amounts of fixed carbon, volatile material, and moisture in comparison with the other materials to which it is related. Bituminous coal also exhibits a relatively high heat value, which along with its abundance, is responsible for its common use in a number of important practical applications. The material is, for instance, utilized to generate steam in industrial plants and to produce coke for the smelting of iron ore, two functions that are central to modern civilization. Unfortunately, however, burning sizable quantities of sulfur-containing bituminous coal can have an adverse effect on the environment, leading to such detrimental effects as air pollution and acid rain. Due to these considerable problems, some electric power plants have begun utilizing the less environmentally damaging subbituminous coal instead, and scientists are in constant pursuit of even better sources of fuel.


© 1995-2013 by Michael W. Davidson and The Florida State University. All Rights Reserved. No images, graphics, software, scripts, or applets may be reproduced or used in any manner without permission from the copyright holders. Use of this website means you agree to all of the Legal Terms and Conditions set forth by the owners.
This website is maintained by our
Graphics & Web Programming Team
in collaboration with Optical Microscopy at the
National High Magnetic Field Laboratory.
Last modification: Thursday, Nov 20, 2003 at 03:51 PM
Access Count Since November 20, 2003: 6094
Microscopes provided by:
Visit the Nikon website. Visit the Olympus Microscopy Resource Center website.