This book documents the proceedings of the symposium, "Mineral Scale Formation and Inhibition," held at the American Chemical Society Annual Meeting August 21 to 26, 1994, in Washington, D.C. The symposium, sponsored by the Division of Colloid and Surface Chemistry, was held in honor of Professor George H. Nancollas for his pioneering work in the field of crystal growth from solution. A total of 30 papers were presented by a wide spectrum of scientists. This book also includes papers that were not presented but were in the symposium program.

Polymeric materials are heavily loaded with mineral fillers such as talc, calcium carbonate (CaCO3) and silica from non-renewable resources such as limestone, sand, metamorphic rocks and rock deposits. These mineral fillers are found to increase the mechanical properties, thermal stability, process ability and fire retardancy of polymer composites. However, mining of these fillers can cause adverse effects on the environment such as depletion of natural flora and fauna, erosion of soil, instability of soil and rock masses and changes in the environmental landscape. <...>

Day 1 questa caldera and associated porphyry molybdenum Mineralization, latir volcanic field, sangre de Cristo mountains, and rio grande rift
Day 2 san juan mountains, southeast caldera complex and Acid-sulfate epithermal mineralization at summitville
Day 3 central san juan caldera cluster and adularia-sericite Epithermal mineralization at creede
Day 4 western san juan caldera complex and multistage mineralization around the lake city caldera

Orogenic gold deposits localized in carbonaceous sedimentary (black-shale) complexes are major contributors to worldwide balance of gold extracted from the crust, though there is a limited consensus about the role of host sedimentary rocks, involvement of external (i.e., magma-derived) fluids and brittle deformations into ore remobilization and transport. This paper presents the original results of mineralogical, petrographic and isotopegeochemical

studies of rocks and ores from the large Krasniy gold deposit (Baikal-Patom plateau, southern Siberian craton) given in comparison with the thoroughly studied giant Sukhoi Log deposit, with both deposits hosted by the Neoproterozoic carbonaceous metasedimentary rocks.