Geology topics
Robert W. Potter
Publications and source records attributed to Robert W. Potter.
The weathering of sulfide ores in Shasta County, California, and its relationship to pollution associated with acid mine drainage
The West Shasta Copper-Zinc District of Shasta County, California is presently acting as a source of acid mine drainage which is entering the Shasta Lake and the Keswick Reservoirs (Nordstrom et al., 1976). The purpose of the present investigation was to study in the field the weathering of these sulfide ores and their associated wastes to elucidate the processes involved in the formation of acid mine drainage. An understanding of these processes is essential to the design of abatement projects for the district. The area investigated is illustrated in Figure 1. The detailed geology of the mining district has been summarized by Kinkel et al. (1956), whose work served as the geologic framework for this investigation. The process of sulfide weathering was examined in two distinct environments, i.e. in-situ and in waste piles associated with mining operations. A suite of 59 solid samples and associated waters were collected from various examples of the two environments. The mineral samples were studied by X-ray diffraction, reflected light microscopy, and by selective chemical analysis. The waters were studied through field measurement of pH, eH, conductivity, detailed chemical analysis by atomic absorption (D. Kirk Nordstrom, analyst), and emission spectrographic analysis of evaporates (Chris Heropoulos, analyst).
Some geochemical parameters effecting the in-situ leaching of uranium
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Definitive X-ray powder data for covellite, anilite, djurleite, and chalcocite
By using the Guinier-Hägg focusing X-ray powder camera with Cr Kα 1 and Cu Kα 1 radiations, new powder data for covellite (CuS), anilite (Cu 7 S 4 , djurleite (Cu 1.934 S), and low chalcocite (Cu 2 S) have been obtained from synthetic and natural materials. The powder data were treated by least-squares analysis to obtain the best unit-cell parameters consistent with the data. These powder data are intended to replace inferior and incomplete data previously published and to serve as standards for the study of copper sulflde minerals.
Annotated bibliography of studies on the density and other volumetric properties for major components in geothermal waters, 1928-1974
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Bibliography of studies on the density and other volumetric properties for major components in geothermal waters 1928-1974
The purpose of the attached bibliography is to supply in one document an annotated listing of the references pertaining to the density of solutions of importance to geothermal exploration and energy production.
The volumetric properties of aqueous sodium chloride solutions from 0 degrees to 500 degrees C at pressures up to 2000 bars based on a regression of the available literature data
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