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Gordon W. Day

Publications and source records attributed to Gordon W. Day.

9 recordsLinked to original sources
USGS1984

Geochemical survey of the Lusk Creek Roadless Area, Pope County, Illinois

The Lusk Creek Roadless Area (Index map) lies along the western edge of the Illinois-Kentucky fluorspar district in which flourite deposits occur as lenticular-type veins emplaced along fult zones or as tratiform-shaped bedding-replacement deposits that occur along fault zones (Grogan and Bradbury, 1967; Trace, 1974). Although mineralogy varies between deposits, Trace (1974) points out that the principal minerals are fluorite (CaF) and calcite (CaCO 3 ), and associated with these minerals are lesser amounts of sphalerite (ZnS), galena (PbS), and barite (BaSO 4 ). Minor quantites of iron-rich dolomite (CaMg(CO 3 ) 2 ), pyrite (Fe S 2 ), and alteration products of zinc, lead, and copper minerals also are found.

Illinois↗
USGS1984

Geochemical maps of the Cornplanter Roadless Area, Warren County, Pennsylvania

The U.S. Geological Survey (USGS) made a reconnaissance geochemical survey of the Cornplanter Roadless Area (fig. 1) to test for indistinct or unexposed mineral deposits that might be recognized by their geochemical halos or patterns formed by the distribution of trace elements. Lesure, assisted by Andrew E. Grosz, collected 22 stream-sediment, 63 soil, and 23 rock samples from within and dear the study area during October 1980. All samples were analyzed for 31 elements using semi-quantitative spectrographic methods by Day in USGS laboratories, Denver, Colo. (table 1). In addition, the samples were also analyzed for zinc by means of an atomic absorption method by B.F. Arbogast and W.C. Martin, USGS laboratories, Denver Colo. J.T. Hanley and P.G. Schruben formatted the analytical data by computer methods for table 1.

Pennsylvania↗
USGS1983

Geochemical maps of Bunk Robinson Peak and Whitmire Canyon Roadless Areas, Hidalgo County, New Mexico, and Cochise County, Arizona

Geochemical sampling of the Bunk Robinson Peak and Whitmire Canyon Roadless Areas was completed in the spring of 1980. The purpose of the geochemical sampling was to determine if certain metals, and "pathfinder" elements in heavy-mineral concentrates and stream sediments are enriched beyond normal black-ground amounts. The enrighment of elemental contents above background amounts in these samples can be importatn clue to the presence of a potential mineral deposit. These geochemical investigations are of part of an intergrated mineral resource investigation of the Bunk Robinson Peak and Whitmire Canyon Roadless Areas that also include geologic mapping (Hayes, 1982) and an evaluation of mineral resource potential (Hayes and others, in press).

Arizona, New Mexico↗
USGS1976

Spectrographic and chemical analyses of geochemical samples from the McCarthy Quadrangle, Alaska

As an integral part of the Alaskan Mineral Resource Assessment Program, a geochemical reconnaissance survey was conducted in the McCarthy quadrangle during the summer of 1974. The investigation consisted of geochemical sampling, multielement chemical and spectrographic analyses, compilation of new and existing geochemical data, statistical evaluation of the total data set, and the generation of element distribution and abundance maps. The purpose of the survey was to define areas in the quadrangle that contain anomalous concentrations of metallic and nonmetallic elements. These studies are fundamental to a comprehensive evaluation of the mineral resource potential of the area and to assist in the discovery of additional economic mineral deposits. The first-large scale geochemical sampling and analytical surveys were initiated in the McCarthy quadrangle in the early 1960's with the inception of the Wrangell Mountain project by the U.S. Geological Survey. Since that time, levels of activity in geochemical sampling in the quadrangle have fluctuated. Each year, many geochemical samples have been collected concomitantly with geologic mapping, and was culminated under the Alaskan Minerals Resource Assessment Program 1974.

Alaska↗