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Results for “Trace Elements Memorandum”

Search indexed USGS publications on groundwater, aquifers, geologic maps, mineral resources and earthquakes. Explore source records by subject and place.

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At least 163 records · Page 9Linked to original sources
USGS1951

Preliminary report on the correlation between gamma-ray logs and permeability logs of the ore-bearing sandstone in the Morrison Formation Calamity Mesa, Mesa County, Colorado

A study of the hydrologic properties and geologic relations of the ore-bearing sandstone in the Salt Wash sandstone member of the Morrison formation has been undertaken because uranium and vanadium are believed to have been introduced into the sandstone by circulating ground water. This report describes the geologic and hydrologic characteristics of the ore-bearing sandstone as determined in the core samples from three diamond-drill holes on Calamity Mesa, Mesa County, Colo., and correlates these data with localized gamma-ray activity detected in the three drill holes. These data are illustrated on figure 1 by the combined geologic, permeability, porosity, and gamma-ray logs. This study is part of the program of geologic studies on the Colorado Plateau conducted by the Geological Survey on behalf of the Atomic Energy Commission. This preliminary report describing the results of this study has benefited from the suggestions and criticisms of L. B. Riley of the Geological Survey.

Colorado↗
USGS1951

Preliminary report on geobotanical exploration in the Yellow Cat District, Grand County, Utah

Two geobotanical methods of prospecting have been applied to the search for uranium deposits in the Yellow Cat district, Grand County, Utah. The first method is based on the absorption and accumulation of uranium by plants from underlying uranium deposits. To demonstrate this method, several hundred samples of Juniperus monosperma, Atriplex confert ifolia, and Cowania mexicana were collected in the district and analyzed for their uranium content. Plants containing significant amounts of uranium are considered to indicate mineralized ground. The second method of prospecting is based on the relation of selenium-indicator plants of the genera Astragalus and Stanleya to mineralized ground. Chemical analyses show that selenium is associated with the uranium and vanadium in the ore deposits. Distribution maps of the selenium-indicator plants, Astragalus confertiflorus. A. Pattersonii, A. Preussii var. arctus, and Stanleya pinnata, are included in this report. Outlines of favorable ground in the Yellow Cat district determined by these data are drawn on the maps.

Utah↗
USGS1952

Results of exploration at Lost Creek schroeckingerite deposit, Sweetwater County, Wyoming

The U. S. Geological Survey, on behalf of the Atomic Energy Commission, from July 1951 to February 1952, explored the Lost Creek schroeckingerite deposit, Sweetwater County, Wyoming, by means of auger- drilling, trenching, and bucket-drilling. This report presents an estimate of the inferred ore reserves obtained during this exploration. The inferred reserves are presented under three schedules. Schedule A is the reserves calculated for the main schroeckingerite-bearing area; Schedule B is the reserves for the smaller schroeckingerite-bearing area to the north of the main area. The grade and tonnage estimates for both Schedule A and Schedule B are divided into two groups--data for selective mining, and data for bulk-mining. Schedule C presents reserve estimates for a semi- selective mining method and was calculated for four selected blocks in the western half of the main schroeckingerite-bearing area. The inferred reserves of schroeckingerite available for bulk-mining in the area of Schedule A are about 3,000,000 tons that contain 0.005 percent uranium, or about 140 tons of metallic uranium. By bulk-mining, 900,000 tons containing 0.005 percent uranium, or U£ tons of metallic uranium, are available in the area of Schedule B. The inferred reserves available for selective mining in the area of Schedule A are 100,000 tons of schroeckingerite deposits that contain 0.030 percent uranium, or 30 tons of metallic uranium. By selective mining, 35,000 tons of schroeckingerite deposits that contain the 0.030 percent uranium, or 10 tons of metallic uranium, are available in the area of Schedule Bo Semi- selective mining in the four areas of Schedule C will yield about 650,000 tons of rock containing O.008 percent uranium, or 50 tons of metallic uranium.

Wyoming↗
USGS1952

Preliminary report on diamond-drill exploration on Outlaw Mesa, Mesa County, Colorado

Outlaw Mesa is northeast of the Dolores River, about 10 miles southeast of Gateway, Mesa County, Colo. It is an oval-shaped area of about 17 square miles lying mostly within T. 50 N., R. 17 W«, and T. 50 No, R. 18 W., New Mexico principal meridian. The area is accessible by three unimproved roads from Colorado Highway 141. The altitude of the mesa ranges from about 5,500 feet to over 7,000 feet. Total production from Outlaw Mesa from 1914 to 1949 was about 4,000 tons of carnotite ore, having an estimated grade of about 0.50 percent U30Q and 2.5 percent V 2 O 5 . The production from 1949 to October 1951 was about 18,000 tons, having an estimated grade of about 0.35 percent U 3 O 8 and 1.6 percent V 2 O 5 . About 80 percent of the production from 1949 to October 1951 was from deposits discovered by U. S. Geological Survey diamond-drilling in public land, now leased to the Climax Uranium Co. A more complete history of mining and production OE Outlaw Mesa has been given in earlier reports. The results of Geological Survey exploration on Outlaw Mesa are summarized in this preliminary report. A final and more comprehensive report will be transmitted later. No additional drilling is planned.

Colorado↗
USGS1951

Reconnaissance examination for uranium at six mines and properties in Idaho and Montana

Six mining properties in Idaho and Montana at which radioactivity had been reported or suspected were briefly examine by J.S. Vhay and W.A. Roberts of the U.S. Geological Survey in October and November 1949. The properties in Idaho are the Grunter mine, from which radio-active mill concentrates have been reported; the Kentuck mine; the Ulysses-kittie Burton Mill; and the Garm-Lemoreaux mine. The properties in Montana are the Armeson-McKenny property in Beaverhead County and the Oro property in Lincoln County. Moderate to high radioactivity was noted at the Garm-Lemoreaux mine and the Armeson-McKenney property. That most of this radioactivity is not caused by uranium is suggested by the low uranium content of the majority of the samples. One sample from a dump of the Garm-Lemoreaux mine assayed 0.11 percent uranium.

Idaho;Montana↗