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Filter Total Items: 944
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Year Published: 1984

Microprobe analyses of hornblendes from 5 calc-alkalic intrusive complexes, with data tables for other calcic amphiboles and BASIC computer programs for data manipulation

Hammarstrom, Jane
Microprobe analyses of hornblendes from 5 calc-alkalic intrusive complexes, with data tables for other calcic amphiboles and BASIC computer programs for data manipulation; 1984; OFR; 84-652; Hammarstrom, Jane

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Year Published: 1984

Mineral resources of the Citico Creek Wilderness Study Area, Monroe County, Tennessee

Slack, John F.; Force, E.R.; Behum, P.T.; Williams, B.B.
Mineral resources of the Citico Creek Wilderness Study Area, Monroe County, Tennessee; 1984; B; 1552; Slack, John F.; Force, E. R.; Behum, P. T.; Williams, B. B.

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Year Published: 1984

Whole-rock trace element analyses of chromite-bearing rocks from the lowermost cyclic unit of the Stillwater Complex, Montana

Loferski, P.J.; Berman, Sol; Smith, Hezekiah; Lipin, B.R.
Whole-rock trace element analyses of chromite-bearing rocks from the lowermost cyclic unit of the Stillwater Complex, Montana; 1984; OFR; 84-125; Loferski, P. J.; Berman, Sol; Smith, Hezekiah; Lipin, B. R.

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Year Published: 1984

BIG FROG WILDERNESS STUDY AREA AND ADDITIONS, TENNESSEE AND GEORGIA.

A mineral-resource survey was made of the Big Frog Wilderness Study Area and additions, Tennessee-Georgia. Geochemical sampling found traces of gold, zinc, copper, and arsenic in rocks, stream sediments, and panned concentrates, but not in sufficient quantities to indicate the presence of deposits of these metals. The results of the survey...

Slack, John F.; Gazdik, Gertrude C.
BIG FROG WILDERNESS STUDY AREA AND ADDITIONS, TENNESSEE AND GEORGIA.; 1984; Article; Journal; Geological Survey Professional Paper (United States); Slack, John, F.; Gazdik, Gertrude, C.

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Year Published: 1984

BREAD LOAF ROADLESS AREA, VERMONT.

On the basis of mineral-resource survey the Bread Loaf Roadless Area, Vermont, is considered to have probable resource potential for the occurrence of volcanogenic massive sulfide deposits of copper, zinc, and lead, particularly in the north and northeastern section of the roadless area. Nonmetallic commodities include minor deposits of sand and...

Slack, John F.; Bitar, Richard F.
BREAD LOAF ROADLESS AREA, VERMONT.; 1984; Article; Journal; Geological Survey Professional Paper (United States); Slack, John, F.; Bitar, Richard, F.

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Year Published: 1984

BRISTOL CLIFFS WILDERNESS, VERMONT.

A mineral-resource survey of the Bristol Cliffs Wilderness, Vermont, indicates that there is little promise for the occurrence of metallic mineral resources within the wilderness. The only apparent resources are nonmetallic commodities including rocks suitable for construction materials and silica sand, and small amounts of peat and sand and...

Slack, John F.; Mory, Peter C.
BRISTOL CLIFFS WILDERNESS, VERMONT.; 1984; Article; Journal; Geological Survey Professional Paper (United States); Slack, John, F.; Mory, Peter, C.

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Year Published: 1984

CITICO CREEK WILDERNESS STUDY AREA, TENNESSEE.

A mineral-resource survey of the Citico Creek Wilderness Study Area, in easternmost Tennessee, indicated that the area offers little promise for the occurrence of metallic mineral resources. Geochemical sampling found traces of gold, copper, cobalt, barium, arsenic, lead, zinc, and thorium in rocks, stream sediments, and panned concentrates, but...

Slack, John F.; Behum, Paul T.
CITICO CREEK WILDERNESS STUDY AREA, TENNESSEE.; 1984; Article; Journal; Geological Survey Professional Paper (United States); Slack, John, F.; Behum, Paul, T.

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Year Published: 1984

Chromite from the Blue Ridge province of North Carolina.

Chromite is found as ubiquitous accessory grains and occasional segregations within dunite bodies. Results of analysis of chromite textures and chemistry and estimation of equilibration T of olivine-chromite pairs are cited as evidence that the dunites are metamorphic rocks rather than primary mantle peridotites. They are considered to be...

Lipin, B.R.
Chromite from the Blue Ridge province of North Carolina.; 1984; Article; Journal; American Journal of Science; Lipin, B. R.

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Year Published: 1984

DEVILS DEN ROADLESS AREA, VERMONT.

A mineral-resource survey was made of the Devils Den Roadless Area, Vermont, Geochemical sampling found traces of gold, copper, barium, lead, molybdenum, silver, tin, and thorium in rocks, stream sediments, and panned concentrates, but not in sufficient quantities to identify any resource potential. The only apparent resources are nonmetallic...

Slack, John F.; Sabin, Andrew E.
DEVILS DEN ROADLESS AREA, VERMONT.; 1984; Article; Journal; Geological Survey Professional Paper (United States); Slack, John, F.; Sabin, Andrew, E.

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Year Published: 1984

Lye Brook Wilderness, Vermont

The Lye Brook Wilderness, in the Green Mountains of Vermont is underlain by gneisses, quartzites, schists, and amphibolites of Precambrian to Ordovician age. A mineral-resource survey determined that only one commodity, quartzite, is present in large quantities and could be a source of dimension stone or crushed stone. Although an anomalously high...

Ayuso, Robert A.; Harrison, D.K.
LYE BROOK WILDERNESS, VERMONT.; 1984; Article; Journal; Geological Survey Professional Paper (United States); Ayuso, Robert, A.; Harrison, D. K.

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Year Published: 1984

Magmatic epidote and its petrologic significance.

Three epidote-bearing tonalitic plutons from the North American Cordillera were studied in detail. These three plutons have close petrographic and chemical similarities. Epidote is always euhedral against biotite but shows highly embayed, vermiform contacts with plagioclase and quartz. Rounded to highly embayed hornblendes are enclosed in epidote...

Zen, E.-A.; Hammarstrom, J.M.
Magmatic epidote and its petrologic significance.; 1984; Article; Journal; Geology; Zen, E. A.; Hammarstrom, J. M.