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Page 6318, results 157926 - 157950

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Phosphate deposits of the Concepcion del Oro district, Zacatecas, Mexico
Cleaves Lincoln Rogers, Salvador Ulloa, Eugenio Tavera
1952, Open-File Report 52-131
The two small Mexican plants that are currently producing acid-phosphate fertilizer from phosphate rock have a productive capacity of about 45,000 metric tons annually. The larger plant processes pebble phosphate imported from Florida, while the other is utilizing material from the small, widely scattered phosphate deposits of Nuevo Leon. Large-scale...
Preliminary report on the Nelson and Radovan copper prospects, Nizina district, Alaska
C.J. Sainsbury
1952, Open-File Report 52-134
Renewed copper exploration by Alaska Copper Mines, Incorporated, at the Nelson and Radovan prospects, Nizina district, Alaska, led the Geological Survey in 1951 to map in detail the Nelson fault block, and to re-examine the old workings. In addition, two new prospects were studied. The Nelson fault block is cut by...
Uranium-bearing deposits west of Clancey, Jefferson County, Montana
Wayne Arthur Roberts, Arthur J. Gude
1952, Open-File Report 52-129
Nine uranium deposits occur in a small area vest of Clancey,Jefferson County, Mont. These deposits are all in or near silicifiedfracture zones in quarts monsonite and related rocks of the Boulderbatholith. The deposits contain pockets of uranium minerals in cavities in brecciated silicified rock. The primary uranium mineral pitch-blende has...
Marl deposits in the Wasilla area, Alaska
Robert M. Moxham, Richard A. Eckhart
1952, Open-File Report 52-104
Marl occurs in several localities in the Cook Inlet area in south-central Alaska. The most significant known deposits are found in the Wasilla area, about 30 miles north of the city of Anchorage.In this area marl has been deposited in three fresh water lakes--Wasilla Lake, Finger Lake and Lucile Lake....
Heavy-mineral analysis of sedimentary rocks of northern Alaska
Robert Hamilton Morris
1952, Open-File Report 52-102
The Navy Oil Unit of the United States Geological Survey has been investigating the geology of Naval Petroleum Reserve No. 4, northern Alaska. As part of this program, heavy-mineral samples were prepared from cores of the test wells and core holes and studied to determine stratigraphic correlations. Using the following...
The Permian phosphorite deposits of western United States
V.E. McKelvey, Roger Warren Swanson, Richard Porter Sheldon
1952, Open-File Report 53-166
The Permian marine phosphorite deposits of the western United States were laid down in the Phosphoria formation and its partial stratigraphic equivalents over an area of about 135,000 square miles in Montana, Idaho, Wyoming, Utah, and Nevada. The deposits in the eastern part of the field lie on the western...
Clay, near Nenana, Alaska
R.A. Eckhart
1952, Open-File Report 52-172
The clay deposit here described is located on the west side of the Alaska Railroad about 3.7 miles south of Nenana in N.E. 1/4 Sec. 3, T. 5 S., R. 8 W. (see figure 1). The surface of the deposit has a relief of less than 10 feet and is...