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Duttonite, a new quadrivalent vanadium oxide from the Peanut mine, Montrose County, Colorado
Mary Eleanor Thompson, Carl Houston Roach, Robert Meyrowitz
1956, Trace Elements Investigations 582
Duttonite, a new quadrivalent vanadium oxide from the Peanut mine, Montrose County, Colo., has the formula VO(OH)2. The mineral occurs as crusts and coatings of pale-brown transparent platy crystals, as one of the first oxidation products of montroseite ore. It is associated with melanovanadite and abundant crystals of hexagonal...
Uranium in carbonaceous rocks in the Townsend and Helena valleys, Montana
George E. Becraft
1956, Trace Elements Investigations 581
Uranium-bearing carbonaceous shale and lignite beds are exposed in five areas in the Townsend and Helena Valleys in western Montana. The greatest number of exposures is in an area of several square miles northeast of Winston in the Townsend Valley. The uranium-bearing beds are in the lower part...
Rapid-scanning microphotometry
A.W. Helz
1956, Trace Elements Investigations 579
A rapid-scanning microphotometer is described with which a 10-inch spectrum may be scanned in two minutes. The resulting chart may be 60, 300, or 1,500 cm long (wavelength scale) and 4 cm high (intensity scale). Commercially available components are used....
A fluorimetric study of the thorium-morin system
Robert G. Milkey, Mary H. Fletcher
1956, Trace Elements Investigations 589
Thorium reacts with morin to yield a yellow complex that fluoresces when irradiated with ultraviolet light. The effect on the fluorescence of such variable as concentration of acid, alcohol, thorium, morin, and complex; time, temperature, and wavelength of exciting light are studied to determine experimental conditions yielding maximum fluorescence....
Botanical prospecting for uranium in the Circle Cliffs area, Garfield County, Utah
F. J. Kleinhampl, Carl Koteff
1956, Trace Elements Investigations 604
<Plant-analysis prospecting may be used to locate uranium deposits in the Circle Cliffs area where the deposits lie as much as 70 feet beneath the surface of benches developed on the Shinarump member of the Chinle formation. The Shinarump comprising the benches is thicker than 70 feet at many...
Behavior of Colorado Plateau uranium minerals during oxidation
Robert Minard Garrels, C. L. Christ
1956, Trace Elements Investigations 588
Uranium occurs as U(VI) and U(IV) in minerals of the Colorado Plateau ores. The number of species containing U(VI) is large, but only two U(IV) minerals are known from the Plateau: uraninite, and oxide, and coffinite, a hydroxy-silicate. These oxidize to yield U(VI) before reacting significantly with other...
The determination of calcium in phosphate, carbonate, and silicate rocks by flame photometer
Henry Kramer
1956, Trace Elements Investigations 623
A method has been developed for the determination of calcium in phosphate, carbonate, and silicate rocks using the Beckman flame photometer, with photomultiplier attachement. The sample is dissolved in hydrofluoric, nitric, and perchloric acids, the hydrofluoric and nitric acids are expelled, a radiation buffer consisting of aluminum, magnesium, iron, sodium, potassium,...
Summary of the mineralogy of the Colorado Plateau uranium ores
Alice D. Weeks, Robert Griffin Coleman, Mary E. Thompson
1956, Trace Elements Investigations 583
In the Colorado Plateau uranium has been produced chiefly from very shallow mines in carnotite ores (oxidized vanadiferous uranium ores) until recent deeper mining penetrated black unoxidized ores in water-saturated rocks and extensive exploration has discovered many deposits of low to nonvanadiferous ores. The uranium ores include a wide...
Preliminary report on waterpower resources of Cascade Creek, Scenery Creek, and Delta Creek near Petersburg, Alaska
Jesse Lane Colbert
1956, Open-File Report 56-26
The heavy precipitation and runoff, suitable storage sites near tidewater, and steep stream gradients are favorable to the development of hydroelectric power on the streams considered in this report. A geologic examination of the sites indicates that their development would not be hindered by any unusual geologic conditions.On the basis...
Geology of southeastern Ventura Basin, Los Angeles County, California
Edward L. Winterer
1956, Open-File Report 56-134
The Ventura Basin (see index map, fig. 1) has long been one of the important oil-producing districts of California. The eastern part of the Basin includes some of the oldest oil fields in the state and also several of those most recently discovered. Since 1937 several new fields have been...
Floods of August 1955 in the Northeastern States
Water Resources Division, U.S. Geological Survey
1956, Circular 377
The floods of August 1955 were an unprecedented disaster in a arge area of the northeastern United States. They rank among the most destructive in the country's his ory. Augmented by the antecedent hurricane sto m of August 11-15, the rainfall of August 17-20 accompanying hurricane Diane reached maximum val...