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The conductivity and thermoelectromotive force of a number of chalcogenide phases of titanium, zirconium, hafnium, and thorium were investigated. From the results, it follows that for the sulfides of titanium the transition from metallic to semiconductor properties is developed at a greater S/metal(Me) ratio than for the sulfides of zirconium, hafnium and thorium. (Author).
Volume 61 of Reviews in Mineralogy and Geochemistry presents an up-to-date review of sulfide mineralogy and geochemistry. The crystal structures, electrical and magnetic properties, spectroscopic studies, chemical bonding, thermochemistry, phase relations, solution chemistry, surface structure and chemistry, hydrothermal precipitation processes, sulfur isotope geochemistry and geobiology of metal sulfides are reviewed. Where it is appropriate for comparison, there is brief discussion of the selenide or telluride analogs of the metal sulfides. When discussing crystal structures and structural relationships, the sulfosalt minerals as well as the sulfides are considered in some detail.
Results of recent experimental studies and modern theoretical concepts are combined in this volume to provide a comprehensive analysis of sulfide mineral oxidation processes. Introductory chapters discuss the properties of sulfide minerals and various investigative techniques, followed by chapters on oxidation mechanisms and the behavior of minerals under these various oxidizing conditions. This book also demonstrates modern methods of physical-chemical modelling and the regulation and optimization of flotation processes.
Metal-Sulfur clusters play an essential role in living organisms through the unique character of sulfur-metal bonding. The new volume in prestigious Metal Ions in Life Sciences explores different transition metal complexes with sulfur, their biosynthesis and biological functions in regulation of gene expression, catalysis of important metabolic reactions and protein structure arrangement.
Volume 1 of Reviews in Mineralogy introduces to the mineralogy of sulfides. It covers the Determination, Relationships, and Classification of Sulfide Mineral Structures, Sulfide Crystal Chemistry, Electron Interactions and Chemical Bonding in Sulfides, Experimental Methods in Sulfide Synthesis, Sulfide Phase Equilibria and Sulfide Petrology. The Short Course on Sulfide Mineralogy was given November 15-17, 1974, preceding the annual meetings of the affiliated societies of the Geological Society of America, at the Sheraton Four Ambassadors Hotel in Miami, Florida, USA with eighty persons in attendance.