Unusual, high-temperature, iron-rich, mineral phases produced by natural burning of coal seams
Subtitle: analytical data
By: J.R. Herring and P.J. Modreski.
Contributors: Modreski, P. J.; Geological Survey (U.S.)
Series: U.S. Geological Survey open-file -- 87-22.; U.S. Geological Survey open-file report -- 87-22.
Publisher: U.S. Geological Survey
Published: 1990
Place of publication: [Denver, Colo.]
Language: eng
Format: Microform
Number of pages: 38
Subjects: Coal -- Geology -- United States.; Coal -- United States -- Combustion.; Slag.
Notes: Distributed to depository libraries in microfiche.

Includes bibliographical references (leaves 35-36).

Microfilm. [Denver, Colo. : U.S. Geological Survey, 1990] 1 microfiche ; negative.