Geology of Trace Elements in Coal

A preliminary study of mineralogy and geochemistry of four coal samples from northern Iran

“…1) have an ash content of between 10% and 50%, and their sulphur and phosphorus contents are 1.1% to 5.0% and less than 0.01% to 0.1%, respectively (Razavi-Armagani and Moenoalsadat, 1994). As indicated by their low B content (9-33 mg/kg) (Goodarzi, 1995), these coals were deposited in a fresh water environment (Razavi-Armagani and Fig. 1.…”

The Maiganga Coal Deposit: Bituminous, Sub-Bituminous or Lignite?

“…Proximate analysis [9] is used to determine the percentage of volatile matter, ash content, moisture (inherent water) content, and fixed carbon composition of coal sample. Fixed carbon, it must be noted is solid, combustible matter left in coal after the lighter, volatile, hydrogen-rich compounds are driven off during coalification [10][11][12]. This evaluation of coal quality [13] is majorly to ascertain coal use.…”

Mercury in Western Canadian subbituminous coal—a weighted average study to evaluate potential mercury reduction by selective mining

“…1. In situ bulk density vs. weight percent ash (air dried basis) for four rank classes of coal (Smith, 1991). coal, nature and frequency of partings associated with coal, rank, hydrologic condition, weathering, and tectonics (Bragg et al, 1991;Cecil et al, 1982;Chou, 1984;Lindahl and Finkelman, 1986;Finkelman, 1995;Finkelman et al, 2002;Goodarzi, 1994Goodarzi, , 1995Swaine, 1990).…”

“…The coal-bearing strata are Upper Cretaceous -Tertiary age, subbituminous from Alberta, were deposited under brackish environment (Smith, 1989;Goodarzi and Swaine, 1993;Goodarzi, 1995) and had little tectonic disturbance (Smith, 1989).…”