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Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

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We are focused on some of the most significant issues society faces, and our science is making a substantial contribution to the well-being of the Nation and the world. Learn more about the major topics our research covers and the programs focused on those topics.

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Filter Total Items: 171140

Chromite deposits of the Twin Sisters Mountains, Washington

No abstract available.
Authors
H. L. James

Cobalt-bearing manganese deposits of Alabama, Georgia, and Tennessee

No abstract available.
Authors
W. G. Pierce, A.E. Engel

Cooperative stream measurement work in Utah: A part of Chapter 6 of Twenty-third biennial report of the State Engineer to the governor of Utah: 1940-1942

As early as 1888 the United States Geological Survey began measuring the discharge of the principal rivers of the Western States, with a view to making a continuous inventory of this resource and its utilization for the greatest public good. Until 1905 this work was done in cooperation with the State through the state engineer’s office. Stream-flow records are fundamental to the distribution of wa
Authors
Ralf R. Woolley
By
Water Resources Mission Area, Utah Water Science Center

Copper and Zinc Deposits in the Reward Area Casa Grande Mining District, Pinal County, Arizona

No abstract available.
Authors
J. B. Hadley, H.H. Sullwold

Copper Deposits in the Old Hat Mining District, Pima County, Arizona

No abstract available.
Authors
Nels P. Peterson, S. C. Creasey

Copper deposits of the White Mesa Mining District, Coconino County, Arizona

No abstract available.
Authors
Charles Brian Read, R.D. Sample, H.H. Sullwold

Copper Ridge zinc district, eastern Tennessee

No abstract available.
Authors
John Rodgers, D. F. Kent, R.M. Hutchinson

De Mott mica mine, Grafton County, New Hampshire

No abstract available.
Authors
A.J. McNair, J. Chivers, R.P. Brundage

Deer Park mica-feldspar mines, Mitchell County, North Carolina

No abstract available.
Authors
J.J. Page, J. C. Olson, J.J. Norton

Determination of active oxygen in the presence of barium and lead

The method of Mrgudich and Clark is modified by substituting 5 per cent (by volume) perchloric acid for 50 per cent perchloric acid. Titration by potassium permanganate may be substituted for electrometric titration with ceric sulfate.
Authors
M. Fleischer

Determination of iron: In the presence of chromium and titanium with the jones reductor

Sulfuric acid solutions of titanous and chromous sulfates, obtained by passage through the Jones reductor, are oxidized by aeration for from 5 to 10 minutes in the presence of a trace of copper sulfate as a catalyst. Ferrous sulfate is essentially unoxidized and is titrated with permanganate after aeration. Best results are obtained by using 0.0003 millimole of copper sulfate in about 300 ml. of s
Authors
F. S. Grimaldi, R. E. Stevens, M. K. Carron

Determination of small amounts of molybdenum in tungsten and molybdenum ores

A rapid method has been developed for the determination of small amounts of molybdenum in tungsten and molybdenum ores. After removing iron and other major constituents the molybdenum thiocyanate color is developed in water-acetone solutions, using ammonium citrate to eliminate the interference of tungsten. Comparison is made by titrating a blank with a standard molybdenum solution. Aliquots are a
Authors
F. S. Grimaldi, R. C. Wells