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165658 results.

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Page 6259, results 156451 - 156475

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Identification and occurrence of uranium and vanadium minerals from the Colorado Plateaus
A. D. Weeks, M.E. Thompson
1954, Bulletin 1009-B
This report, designed to make available to field geologists and others informa- tion obtained in recent investigations by the Geological Survey on identification and occurrence of uranium minerals of the Colorado Plateaus, contains descriptions of the physical properties, X-ray data, and in some instances results of chemical and spectrographic analysis...
Magnetite deposits at Tuxedni Bay, Alaska
Arthur Grantz
1954, Open-File Report 54-103
The magnetite deposits on an island in Tuxedni Bay occur in contact-metamorphosed volcanic and sedimentary rocks near their contact with a quartz diorite batholith which underlies large areas of the adjacent Aleutian Range. The deposits are pyrometasomatic in origin and are localized along northeast-trending fractures. The eastern deposit is a...
Geology of the Eureka pegmatite, Pennington County, South Dakota
Roy Eldon Roadifer
1954, Open-File Report 54-256
The Eureka Pegmatite, two miles southeast of Keystone, Pennington County, South Dakota, is a small but possibly valuable zoned body containing more than 85,000 tons of coarse-grained granite-pegmatite rock.The mica in the pegmatite is probably not of any great importance, but the potash feldspar and beryl may comprise a considerable...
Copper and uranium mineralization in the Coyote mining district, Mora County, New Mexico
Donald Carl Laub
1954, Open-File Report 54-164
Sedimentary copper-uranium deposits lie along the eastern flank of the Sangre de Cristo Range in the Coyote mining district, Mora County, New ilexico. The oldest rocks in the district are pre-Cambrian granites, pegmatites and metasediments. These are unconformably overlain by marine limestones and shales of Pennsylvanian age and fluviatile sediments...
Geology and zinc-lead-barite deposits in the area east of Cuba City, Wisconsin
Allen F. Agnew, Arthur E. Flint, R.P. Crumpton
1954, Miscellaneous Field Studies Map 15
The current study of the Wisconsin-Illinois-Iowa zinc-lead district (fig. 1) was begun in 1942, with the major emphasis placed on detailed mapping of geologic structure and ore deposits.  Preliminary reports for several areas in the mining district have been prepared, and the present study of the are east of Cuba...