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Filter Total Items: 945
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Year Published: 1983

Comparative anatomy of epithermal precious- and base-metal districts hosted by volcanic rocks: A talk presented at the GAC/MSC/GGU Joint Annual Meeting, May 11-13, 1983, Victoria, British Columbia

In order to distinguish dissimilar from similar features of epithermal districts, lithotectonic, mineralogical and geochemical traits are compiled for 15 such districts. The districts occur in structurally complex settings associated with silicic to intermediate volcanics. Affiliation with subduction environments on a continental scale and caldera...

Heald-Wetlaufer, Pamela; Hayba, Daniel O.; Foley, Nora K.; Goss, J.A.
Comparative anatomy of epithermal precious- and base-metal districts hosted by volcanic rocks; 1983; OFR; 83-710; Heald-Wetlaufer, Pamela; Hayba, D. O.; Foley, N. K.; Goss, J. A.

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Year Published: 1983

Mineral resource potential map of the Bread Loaf roadless area, Addison and Washington Counties, Vermont

Slack, John F.; Bitar, Richard F.
Mineral resource potential map of the Bread Loaf roadless area, Addison and Washington Counties, Vermont; 1983; MF; 1625-A; Slack, John F.; Bitar, Richard F.

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Year Published: 1983

Principal facts for gravity stations in part of the central Virginia Piedmont

Snyder, Stephen L.; Daniels, D.L.; Bond, K.R.; Russell, J.M.; Riggle, F.E.
Principal facts for gravity stations in part of the central Virginia Piedmont; 1983; OFR; 83-70; Snyder, Stephen L.; Daniels, D. L.; Bond, K. R.; Russell, J. M.; Riggle, F. E.

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Year Published: 1983

Quartz-molybdenite veins in the Priestly Lake granodiorite, north-central Maine

Quartz-molybdenite veins up to 15 cm in width occur in fine to medium-grained porphyritic biotite-hornblende granodiorite at Priestly Lake north-central Maine. An area of about 150 m x 150 m contains quartz-molybdenite veins; a larger area is characterized by barren quartz veins. Quartz-molybdenite veins are concentrated within the most felsic...

Ayuso, Robert A.; Shank, Stephen G.
Quartz-molybdenite veins in the Priestly Lake granodiorite, north-central Maine; 1983; OFR; 83-800; Ayuso, Robert A.; Shank, Stephen G.

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Year Published: 1983

The Emma Bell Deposit, Siskiyou Co., California : a possible low-grade source of chromite

The Emma Bell chromite deposit in Siskiyou County, California contains over 5 million tons of dunite averaging about 4 percent Cr2O3. Chromite is not evenly disseminated throughout the dunite, however. For the most part the deposit consists of many chromite-rich bands in sharp contact with, and separated by, common dunite containing 1 to 2 percent...

Lipin, B.R.; Wetzel, Nicholas; Heinrich, S.M.
The Emma Bell Deposit, Siskiyou Co., California : a possible low-grade source of chromite; 1983; OFR; 83-816; Lipin, B. R.; Wetzel, Nicholas; Heinrich, S. M.

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Year Published: 1982

Chemical and mineralogical variation in the Pioneer Batholith, southwest Montana

Hammarstrom, J.M.
Chemical and mineralogical variation in the Pioneer Batholith, southwest Montana; 1982; OFR; 82-148; Hammarstrom, J. M.

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Year Published: 1982

Mineral resource potential map of the Kalmiopsis Wilderness, southwestern Oregon

Under the provisions of the Wilderness Act (Public Law 88-577, September 3, 1964) and the Joint conference Report on Senate Bill 4, 88th Congress, the U.S. Geological Survey and the U.S. Bureau of Mines have been conducting mineral surveys of wilderness and primitive areas. Areas officially designated as "wilderness," wild," or "canoe" when the...

Page, Norman J; Miller, Michael S.; Grimes, David J.; Leinz, Reinhard W.; Blakely, Richard J.; Lipin, Bruce R.; Foose, Michael P.; Gray, Floyd
Mineral resource potential map of the Kalmiopsis Wilderness, southwestern Oregon; 1982; MF; 1240-E; Page, N. J.; Grimes, D. J.; Leinz, R. W.; Blakely, R. W.; Lipin, B. R.; Foose, M. P.; Gray, Floyd

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Year Published: 1981

Geologic map of the Kalmiopsis Wilderness Area, Oregon

Page, Norman J; Gray, Floyd; Cannon, J.K.; Foose, M.P.; Lipin, Bruce; Moring, B.C.; Nicholson, S.W.; Sawlin, M.G.; Till, Alison; Ziemianski, W.P.
Geologic map of the Kalmiopsis Wilderness Area, Oregon; 1981; MF; 1240-A; Page, Norman J.; Gray, Floyd; Cannon, J. K.; Foose, M. P.; Lipin, Bruce; Moring, B. C.; Nicholson, S. W.; Sawlin, M. G.; Till, A.lison, Ziemianski, W. P.

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Year Published: 1981

Mineral resources of the Big Frog wilderness study area and additions, Polk County, Tennessee and Fannin County, Georgia

Slack, John F.; Gazdik, Gertrude C.; Dunn, Maynard L.
Mineral resources of the Big Frog wilderness study area and additions, Polk County, Tennessee and Fannin County, Georgia; 1981; B; 1531; Slack, John F.; Gazdik, Gertrude C.; Dunn, Maynard L., Jr.

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Year Published: 1980

Aeromagnetic map of Montana

Zietz, Isidore; Gilbert, Francis P.; Snyder, Stephen L.
Aeromagnetic map of Montana; 1980; GP; 935; Zietz, Isidore; Gilbert, Francis P.; Snyder, Stephen L.

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Year Published: 1979

Geochemical analyses of rock, soil, and stream sediment samples from the Big Frog Wilderness Study Area, Polk County, Tennessee and Fannin County, Georgia

Hopkins, R.T.; Meir, A.L.; Slack, John F.
Geochemical analyses of rock, soil, and stream sediment samples from the Big Frog Wilderness Study Area, Polk County, Tennessee and Fannin County, Georgia; 1979; OFR; 79-543; Hopkins, R. T.; Meir, A. L.; Slack, John F.