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Ronald H. Affolter

Publications and source records attributed to Ronald H. Affolter.

28 records · Page 2Linked to original sources
USGS1979

Chemical analyses of coal and coal-associated rock samples from the Rosebud and McKay coal beds, Tongue River Member of the Fort Union Formation, Colstrip coal deposit, Rosebud County, Montana

As part of a continuing program by the U.S. Geological Survey to collect and chemically analyze representative samples of U.S. coals, 61 coal and coal-associated rock samples were collected from the Rosebud and McKay beds in the Paleocene Tongue River Member of the Fort Union Formation in Rosebud County, Montana. This area is located in the Montana part of the Powder River region, specifically within the Coistrip coal deposit as defined by Matson and Blumer, 1974. Forty of the samples (36 coal and 4 coal-associated rock) are from the Rosebud bed and 21 samples (all coal) are from the McKay bed. The McKay bed is between 5.5 and 18.6 m. below the Rosebud bed. The samples were collected from the Big Sky Mine and from 13 core holes in sec. 1, 2, and 27, T. 1 N., R. 41 E.; sec. 23 and 35, T. 2 N., R. 41 E.; and in sec. 1, 3, 5, 9, 15, and 16, T. 1 N., R. 40 E. The location of the sample collection area is shown in figure 1. Brief descriptions of all 61 samples are listed in table 1 and locations of sampling sites are shown in figure 2. Estimated strippable coal resources for the Rosebud bed in this area exceed 1,305 metric tons (1,439 million short tons) (Matson and Blumer, 1974). There are currently no estimates of coal resources for the McKay bed from this area. Analyses of samples D172034 through D172051 have previously been published in Swanson and others (1976) and are included here in order to provide a more complete data listing. For additional information on sulfur and trace element contents in the Rosebud and McKay coal beds, see Chadwick, Woodriff and others (1975) and Chadwick, Rice and others (1975).

Montana↗
USGS1979

Chemical analyses of coal and coal-associated rock samples from the Coalmont Formation, McCallum and Coalmont areas, North Park, Jackson County, Colorado

As part of a continuing program by the U.S. Geological Survey to collect and chemically analyze representative samples of U.S. coals, 44 coal and coal-associated rock samples were collected from the Paleocene and Eocene, Coalmont Formation in the McCallum and Coalmont areas, North Park, Jackson County, Colorado. Twenty-eight samples (24 coal and 4 coal-associated rock) are from the McCallum area and 16 samples (12 coal and 4 coal-associated rock) are from the Coalmont area. Locations of ten core holes and three mines where the samples were collected, and an outline of North Park are shown on figure 1. The 44 samples are briefly described in table 1.

Colorado↗
USGS1979

Chemical analyses of coal from the Tongue River Member of the Fort Union Formation, Moorhead and southeastern part of the northward extension of the Sheridan coal fields, Powder River and Big Horn counties, Montana

As part of a continuing program by the U.S. Geological Survey to collect and chemically analyze representative samples of U.S. coals, 83 samples were collected from 23 core holes in the Paleocene Tongue River Member of the Fort Union Formation in Big Horn and Powder River counties, Montana. These holes are located in the Montana part of the Powder River coal region, specifically in the western part of the Moorhead coal field and on the eastern margin of the Northward Extension of the Sheridan coal field (fig. 1)

Montana↗
USGS1979

Coal resource and coal quality of Pumpkin Creek EMRIA site, Powder River County, Montana: With a section on chemical analysis

The Pumpkin Creek EMRIA site, an area of about 94 square miles, is located mainly in the southwestern part of the Coalwood coal field on the slightly westward dipping beds of the Tongue River Member of the Paleocene Fort Union Formation in Powder River County, Montana. Three coal beds, A, Sawyer, and Mackin-Walker, were evaluated by 32 drill holes. Coal resources--measured, indicated, and inferred--within the site and in beds more than 5 feet thick are 191,660,000 short tons, 1,356,950,000 short tons, and 34,400,000 short tons, respectively. The coal has an apparent rank of lignite A as shown by the analyses of 17 core samples. The average Btu value of 15 core samples of the Sawyer from the site on the as-received basis is 6,970, average ash content is 6.8 percent, and average sulfur content is 0.4 percent. A comparison of the analyses of samples from the Sawyer coal bed with other analyses of Powder River region coal samples shows that moisture, hydrogen, and oxygen contents are significantly higher, and volatile matter, fixed carbon, carbon, nitrogen, and total sulfur contents and heat of combustion are significantly lower in the Sawyer bed samples. A statistical comparison of the elemental compositions of the two sample groups shows that the Sawyer bed has significantly higher contents of B, Ba, Mn, Nb, U, Y, and Yb and significantly lower contents of Be, Co, Cr, Cu, Ni, Pb, Sc, Se, and Th. The sample of the lower split of the Sawyer bed (bed A) in drill hole PWW8 has a relatively high sulfur content of 1.7 percent, and presumably would not be mined with the rest of the Sawyer. The Mackin-Walker has a Btu value of 7,220, an ash content of 6.9 percent, and a sulfur content of 1.0 percent.

Montana↗
USGS1979

Chemical analyses of coal from the Tongue River Member, Fort Union Formation, Decker coal deposit, Big Horn County, Montana

As part of a continuing cooperative program between the U. S. Geological Survey and the Montana Bureau of Mines and Geology to collect and chemically analyze representative samples of Montana coals, 50 coal and 2 carbonaceous shale samples were collected from the Anderson, Dietz 1 and Dietz 2 coal beds in the Paleocene Tongue River Member of the Fort Union Formation. These samples were collected at six locations in sections 9 and 15, T. 9 S., R. 40 E., section 26, T. 8 S., R. 39 E., and section 29, T. 9 S., R. 39 E., Big Horn County, Montana.

Montana↗
USGS1978

Geology and coal resources of the Hanging Woman Creek Study Area, Big Horn and Powder River Counties, Montana

In an area of 7,200 acres (29 sq km) In the Hanging Woman Creek study area, the Anderson coal bed contains potentially surface minable resources of 378 million short tons (343 million metric tons) of subbituminous C coal that ranges in thickness from 26 to 33 feet (7.9-10.1 m) at depths of less than 200 feet (60 m). Additional potentially surface minable resources of 55 million short tons (50 million metric tons) are contained in the 9-12 foot (2.7-3.7 m) thick Dietz coal bed which lies 50-100 feet (15-30 m) below the Anderson. Analyses of coal from 5 core holes indicates that the Anderson bed contains 0.4 percent sulfur, 5 percent ash, and has a heating value of 8,540 Btu/lb (4,750 Kcal/kg). The trace element content of the coal is generally similar to other coals in the Powder River Basin. The two coal beds are in the Fort Union Formation of Paleocene age which consists of sandstone, siltstone, shale, coal beds, and locally impure limestone. A northeast-trending normal fault through the middle of the area, downthrown on the southeast side, has displaced the generally flat lying strata as much as 300 feet (91 m). Most of the minable coal lies northwest of this fault.

Montana↗
USGS1978

Chemical analyses of coal and shale from the Wasatch Formation in core hole B-1, city of Buffalo, Johnson County, Wyoming

During 1975, a continuous core (B-1) was taken through the uppermost 132.9 m (430 ft) of soil and rock underlying Buffalo, Wyo. The NX (7.6-cm (3in.)) bore hole is located in the NE 1/4 of the NW 1/4 of sec. 35, T. 51 N., R. 82 W., Johnson County, Wyo. (See index map in fig. 1.) The first 5.3 m (17.4 ft) was sampled by Shelby tube, the remainder by wire-line coring apparatus using a split inner tube. Bentonite-based drilling mud was used to drill that part of the hole below 30 m (98 ft). The core was preserved in approximately 15-cm (5.8-in.) lengths in sealed glass jars (Farrow, 1976).

Wyoming↗