Petrographic, mineralogical, and chemical characterization of certain Arctic Alaskan coals from the Cape Beaufort Region

Technical Report · Tue Jan 01 04:00:00 EST 1980

OSTI ID:6996883

Rao, P D

Coal seams for the Cape Beaufort region of Arctic Northwestern Alaska were sampled by drilling by the US Bureau of Mines, Juneau and the US Geological Survey, Anchorage). Samples from the drill holes were supplied to the Mineral Industry Research Laboratory. These are Cretaceous coals ranging in rank from high volatile bituminous A to B. A total of 48 samples from 18 drill holes intersecting 14 seams were studied. Float-sink separations were made at 1.50 specific gravity for 10 of these samples. Raw coals and float-sink products were characterized for proximate analysis, ultimate analysis, ash fusibility, vitrinite reflectance, coal petrology in reflected light, quantitative determination of mineral matter by x-ray diffraction and infrared spectrophotometry of low temperature ash, major minor, and trace elements by atomic absorption and emission spectrochemical analysis. Influence of beneficiation and geological significance of these characteristics, and organic affinity of trace elements are discussed. A generalized scheme for analysis of coal ash by atomic absorption and emission spectrochemical methods is presented.

• Research Organization: Alaska Univ., Fairbanks (USA). Mineral Industry Research Lab.
• OSTI ID: 6996883
• Report Number(s): MIRL-44
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
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ABSORPTION SPECTROSCOPY
ALASKA
ASHES
BITUMINOUS COAL
BLACK COAL
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NORTH AMERICA
PACIFIC NORTHWEST REGION
PETROLOGY
RESIDUES
RESOURCES
SAMPLE PREPARATION
SPECTROSCOPY
USA