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Distribution of a suite of elements including arsenic and mercury in Alabama coal

Miscellaneous Field Studies Map 2333

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Abstract

Arsenic and other elements are unusually abundant in Alabama coal. This conclusion is based on chemical analyses of coal in the U.S. Geological Survey's National Coal Resources Data System (NCRDS; Bragg and others, 1994). According to NCRDS data, the average concentration of arsenic in Alabama coal (72 ppm) is three times higher than is the average for all U.S. coal (24 ppm). Of the U.S. coal analyses for arsenic that are at least 3 standard deviations above the mean, approximately 90% are from the coal fields of Alabama. Figure 1 contrasts the abundance of arsenic in coal of the Warrior field of Alabama (histogram C) with that of coal of the Powder River Basin, Wyoming (histogram A), and the Eastern Interior Province including the Illinois Basin and nearby areas (histogram B). The Warrior field is by far the largest in Alabama. On the histogram, the large 'tail' of very high values (> 200 ppm) in the Warrior coal contrasts with the other two regions that have very few analyses greater than 200 ppm.

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Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Distribution of a suite of elements including arsenic and mercury in Alabama coal
Series title:
Miscellaneous Field Studies Map
Series number:
2333
Year Published:
2000
Language:
English
Description:
22 maps
Country:
United States
State:
Alabama
Scale:
0