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Filter Total Items: 945
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Year Published: 1999

Relation of arsenic, iron, and manganese in ground water to aquifer type, bedrock lithogeochemistry, and land use in the New England coastal basins

In a study of arsenic concentrations in public-supply wells in the New England Coastal Basins, concentrations at or above 0.005 mg/L (milligrams per liter) were detected in more samples of water from wells completed in bedrock (25 percent of all samples) than in water from wells completed in stratified drift (7.5 percent of all samples). Iron and...

Ayotte, Joseph D.; Nielsen, Martha G.; Robinson, Gilpin R.; Moore, Richard B.
Relation of arsenic, iron, and manganese in ground water to aquifer type, bedrock lithogeochemistry, and land use in the New England coastal basins; 1999; WRI; 99-4162; Ayotte, Joseph D.; Nielsen, Martha G.; Robinson, Gilpin R., Jr.; Moore, Richard B.

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Year Published: 1999

Characterization of mine waste at the Elizabeth Copper Mine, Orange County, Vermont

Hammarstrom, J.M.; Meier, A.L.; Jackson, J.C.; Barden, Ryan; Wormington, P.J.; Wormington, J.D.; Seal, R.R.
Characterization of mine waste at the Elizabeth Copper Mine, Orange County, Vermont; 1999; OFR; 99-564; Hammarstrom, J. M.; Meier, A. L.; Jackson, J. C.; Barden, Ryan; Wormington, P. J.; Wormington, J. D.; Seal, R. R., II

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Year Published: 1999

A geochemical isotopic (Nd-Pb) comparison of volcanic rocks erupted during the last 3,550 yrs. B.P. of interplinian activity of Somma-Vesuvius Volcano, southern Italy

Somma, Renato; Ayuso, Robert A.; de Vivo, B.
A geochemical isotopic (Nd-Pb) comparison of volcanic rocks erupted during the last 3,550 yrs. B.P. of interplinian activity of Somma-Vesuvius Volcano, southern Italy; 1999; OFR; 99-365; Somma, Renato; Ayuso, Robert A.; De Vivo, B.

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Year Published: 1998

Map showing areas with potential for garnet resources in bedrock and placer in the Blacktail Mountains and the Gravelly, Greenhorn, Ruby, and Snowcrest ranges of southwestern Montana

Garnet crystals, some of gem quality, have been sought by rock hounds for many years in the alluvial deposits of the Alder Gulch-Ruby River area. Since 1995, garnet have been extracted from these gravels for industrial products at two separately own placer mines in the region: (1) at Cominco American's "Ruby Garnet" operation at Alder , Montana...

Van Gosen, Bradley S.; Hammarstrom, Jane M.; Kellogg, Karl S.; Berg, Richard B.
Map showing areas with potential for garnet resources in bedrock and placer in the Blacktail Mountains and the Gravelly, Greenhorn, Ruby, and Snowcrest ranges of southwestern Montana; 1998; OFR; 98-224-A; Van Gosen, Bradley S.; Hammarstrom, Jane M.; Kellogg, Karl S.; Berg, Richard B.

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Year Published: 1998

Map showing areas with potential for talc deposits in the Gravelly, Greenhorn, and Ruby ranges and the Henrys Lake Mountains of southwestern Montana

For the last several years, Montana has been the leading talc producing state in the United States (U.S. Geological Survey, 1996). For example, in 1992 Montana supplied about 40 percent of the U.S. mine production of talc (Virta, 1992). All of this production has come from the large deposits of high purity talc in the southwestern part of the...

Van Gosen, Bradley S.; Berg, Richard B.; Hammarstrom, Jane M.
Map showing areas with potential for talc deposits in the Gravelly, Greenhorn, and Ruby ranges and the Henrys Lake Mountains of southwestern Montana; 1998; OFR; 98-224-B; Van Gosen, Bradley S.; Berg, Richard B.; Hammarstrom, Jane M.

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Year Published: 1998

Map showing the potential for mineral deposits associated with Precambrian mafic and ultramafic rocks in the Blacktail and Henrys Lake mountains and the Greenhorn and Ruby ranges of southwestern Montana

In response to requests from the Bureau of Land Management (BLM) and the U.S. Forest Service (USFS), the U.S. Geological Survey (USGS) conducted a mineral resource assessment in the Dillon BLM Resource Area in Beaverhead and Madison Counties, southwestern Montana. These agencies use mineral resource data in creating and updating land-use...

Hammarstrom, Jane M.; Van Gosen, Bradley S.; Carlson, Robert R.; Kulik, Dolores M.
Map showing the potential for mineral deposits associated with Precambrian mafic and ultramafic rocks in the Blacktail and Henrys Lake mountains and the Greenhorn and Ruby ranges of southwestern Montana; 1998; OFR; 98-224-D; Hammarstrom, Jane M.; Van Gosen, Bradley S.; Carlson, Robert R.; Kulik, Dolores M.

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Year Published: 1998

Mineral resource assessment; Custer and Gallatin national forests, Montana

Hammarstrom, Jane Marie; Wilson, Anna B.; Van Gosen, Bradley S.; Carlson, Robert R.; Kulik, Dolores M.; Lee, Gregory K.; Elliott, James E.; Perry, William J.; du Bray, Edward A.; Zientek, Michael L.
Mineral resource assessment; Custer and Gallatin national forests, Montana; 1998; OFR; 98-517; Hammarstrom, Jane Marie; Wilson, Anna B.; Van Gosen, Bradley S.; Carlson, Robert R.; Kulik, Dolores M.; Lee, Gregory K.; Elliott, James E.; Perry, William J., Jr.; du Bray, Edward A.; Zientek, Muchael L.

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Year Published: 1998

Preliminary report on water quality associated with the abandoned Fontana and Hazel Creek Mines, Great Smoky Mountains National Park, North Carolina and Tennessee

Seal, R.R.; Hammarstrom, J.M.; Southworth, C.S.; Meier, A.L.; Haffner, D.P.; Schultz, A.P.; Plumlee, G.S.; Flohr, M.J.; Jackson, J.C.; Smith, S.M.; Hageman, P.L.
Preliminary report on water quality associated with the abandoned Fontana and Hazel Creek Mines, Great Smoky Mountains National Park, North Carolina and Tennessee; 1998; OFR; 98-476; Seal, R. R., II; Hammarstrom, J. M.; Southworth, C. S.; Meier, A. L.; Haffner, D. P.; Schultz, A. P.; Plumlee, G. S.; Flohr, M. J.; Jackson, J. C.; Smith, S. M.; Hageman, P. L.

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Year Published: 1998

Selected geochemical data for the Dillon BLM Resource Area, including the Virginia City mining district, Madison and Beaverhead Counties, southwest Montana : mineral-resource and mineral-environmental considerations

Hammarstrom, Jane Marie; Van Gosen, Bradley S.
Selected geochemical data for the Dillon BLM Resource Area, including the Virginia City mining district, Madison and Beaverhead Counties, southwest Montana : mineral-resource and mineral-environmental considerations; 1998; OFR; 98-224-C; Hammarstrom, Jane Marie; Van Gosen, Bradley S.

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Year Published: 1998

Glimpses of the Ice Age from I-81: Lee Ranger District

Travelers on Interstate Highway 81 can see remnants of the Ice Age on the mountains between Strasburg and Harrisonburg, Virginia. Scattered along the miles of green, forested mountains are many gray patches without any forests. These treeless patches, or openings, in the steep mountain forests are block fields - geologic features that owe their...

U.S. Department of the Interior, U.S. Geological Survey, and U.S. Department of Agriculture, Forest Service, Southern Region, 1998, Glimpses of the ice age from I-81, no. 1 (Lee Ranger District) of Geologic wonders of the George Washington and Jefferson National Forests: Reston, Va., U.S. Geological Survey General Interest Publication, 1 brochure