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The crystal structure of a new hydrous calcium copper silicate mineralLaughon, Robert Bush January 1970 (has links)
No description available.
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Geochemical studies of selected base metal minerals from the supergene zoneCrane, Martin John, University of Western Sydney, College of Science, Technology and Environment, School of Science, Food and Horticulture January 2001 (has links)
Acid leaching of different natural chrysocolla samples under ambient conditions demonstrated that the chemical and chrystallographic inhomogenity significantly affects the rate and that it is virtually impossible to use the mineral as a model for the kinetics of hydrometallurgical processing of copper ores.Dissolution experiments, stability diagrams,and X-ray powder diffraction studies are undertaken and studied in this research and results are given.It is found that a complete solid solution series exists in Nature with most tungstenian wulfenites and molybdenum stolzites containing a range of compositions. The first occurrence of a molybdenum stolzite from Broken Hill, Australia, which also contains small amounts of chromium is noted.Raman microprobe spectroscopy has proven to be a very quick and effective non-destructive method for semi-quantitative analysis of the wulfenite-stolzite and powellite-scheelite solid-solution series and in detecting very small amounts of substituted chromate in wulfenite, stolzite and anglesite / Doctor of Philosophy (PhD)
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Geochemical studies of selected base metal minerals from supergene zone /Crane, Martin John. January 2001 (has links)
Thesis (PhD) -- University of Western Sdyney, 2001. / "A thesis presented in accordance with the regulations governing the award of the degree of Doctor of Philosophy, University of Western Sydney" "November 2001" Bibliography: leaves 249 - 254.
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