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Pond Creek Coal Previous HitSeamNext Hit in Eastern Kentucky--New Look at an Old Resource

James C. Hower, James D. Pollock, Jeffrey G. Klapheke

The Middle Pennsylvanian/Westphalian B Pond Creek Coal is an important low-sulfur resource in Pike and Martin Counties, Kentucky. The Breathitt Formation Previous HitseamNext Hit, also known as the lower Elkhorn coal, accounted for nearly 40% of Pike County's 1983 production of 22 million tons. Although the coal is nearly mined out through central Pike County, substantial reserves still exist in the northern part of the county. Past studies of the Previous HitseamNext Hit by the U.S. Bureau of Mines concentrated on the utility of the Previous HitseamNext Hit as a coking blend, with additional consideration of the megascopic and microscopic coal petrology. Our research has focused on the regional variations in the Pond Creek Previous HitseamNext Hit, with emphasis on the petrographic variations.

The main bench of the Pond Creek Previous HitseamNext Hit in central Pike County contains a dull zone; variously appearing as bone, durain, or dull clarain. This attrital layer, which can be followed through several quadrangles, is less distinct to the north in Martin County. To the southwest, its position in the Previous HitseamNext Hit may be replaced by a siltstone parting. Several other dull, attrital zones can be followed for long distances, but none are as thick or persistent. Microscopically, the attrital zones are inertodetrinite-rich and have detrital mineral assemblages. The attrital zone often contributes a significant amount of mineral matter to the otherwise low-ash coal. The remainder of the Previous HitseamNext Hit consists of clarain and bright clarain. The brighter lithotypes generally have 65-80% vitrinite with some lithotype exceeding 90% vitrinite. The mineable thickness of the coal increases to over 10 ft (3 m) in mines where a lower bench/leader and a rider are separated from the main Previous HitseamTop by relatively thin partings. The Pond Creek rider often has a high sulfur content. The overlying strata becomes more marine toward the top and, includes nodules of the Campbell Creek Limestone, particularly in the western and southwestern portions of Pike County.

AAPG Search and Discovery Article #91043©1986 AAPG Annual Convention, Atlanta, Georgia, June 15-18, 1986.