Sulfide

almost exclusively as tuffs, are feldspar-phyric and contain 20-30% mica and amphibole. Felsic volcaniclastic rocks vary from rhyolites to dacites and occur mainly near the stratigraphic top of the volcanic pile where they directly underlie massive sulfide and iron formation deposits. These highly siliceous rocks are mica and amphibole-poor, and occur as both quartzphyric fragments and tuffs. Felsic agglomerate rocks transition from dacite to rhyolite down stratigraphy (Frey and Venzke, 1991). Clastic

The Lynne deposit lies within the early Proterozoic Penokean fold belt of the southern province of the Precambrian Shield. The fold belt is divided into two major terranes in Wisconsin (Sims 1989). The first is the northern Penokean terrane, which contains major oxide facies iron formations and granitic intrusions (DeMatties 1989). The second major terrane, separated from the Penokean terrane by the Niagara fault zone, is the Wisconsin magmatic terrane, characterized by a volcanic island arc-basin

Dark brown to black tourmalinte laminae and beds contained 40% tourmaline, 40% pyrrhotite, and 20% quartz, and reach thicknesses up to 30 cm. Iron formation beds are typically intermixed with iron silicates and sulfides, and are up to one meter thick. These individual beds of iron formation occur as stacked lenses that span over 50 meters vertically through stratigraphy (Frey and Venzke 1991). Intrusive rocks in the OB vary from mm-scale dikes and veins to meter-scale

The Methyl Red and Voges-Proskauer broth is a combination medium that contains peptone, glucose, and a phosphate buffer that produce proteins, fermentable carbohydrates, and a consistent pH level (Leboffe, Microbiology Laboratory Theory and Application). The Methyl Red test uses the Methyl Red and Voges-Proskauer broth to determine if an organism produces stable or unstable acid by performing a mixed-acid fermentation of glucose. If an organism produces a stable acid, it is positive for executing

Sulfide mining has been a highly debated topic in the norther part of our state. Companies such as PolyMet and Twin Metal have proposed sulfide mining in the area despite the publics’ opposition. Sulfide mining will permanently damage the environment around it. Although we are given the hopes of new employment opportunities the mining would be a burden to the tax payers as many companies fail to do well in the boom or bust economy associated with mining and the tax payers are left having to cover

worsen over time and can be very damaging to the mitochondria. The Sulfotransferase metabolism is very important in Phase II detoxification, which is responsible for the detoxification of many compounds. Some of these compounds are phenols, amines, sulfide, salicylates, food additives, and many other toxic molecules as well as nutritious foods considered to be very healthy. Malfunction of the Phenol-Sulfotransferase (PST) enzyme can cause an overload

dioxide and hydrogen sulfide. Hydrogen sulfide are invisble gas that were poisonous. We think this is when life first took hold. Penny Boston and Diana Northern investigate how life can survived here. They went to a cave, Cueva day Pl lose which was filled with hydrogen sulfide. Life is thriving inside the cave. Single cell bacterias snot tights were here. Bacteria are common organism, grow adapt and reproduce. Many bacteria were found and they survive from the hydrogen sulfide. If they can find life

cold water becomes heated geothermally and dissolves metals and sulfides from surrounding rocks. The enriched hot water, superheated to on average 350⁰C, is buoyant and escapes through an opening in the sea floor. The vent fluid exits the sea floor with a flow rate up to several meters per second. As the hot enriched water comes into contact with the cold sea water, a precipitation reaction occurs and the dissolved metals and sulfides precipitate out along the vent opening. As more fluid is ejected

substitution reactions of thionyl chloride, and benzene. Introduction: Organic sulfoxides, especially diphenyl sulfoxide (Ph2SO), are useful synthetic reagents (Kaczorowska et al., p. 8315). Diphenyl sulfoxide has been used in catalytic oxidation of alkyl sulfides to sulfoxides (Arterburn & Nelson, p.2260). They also play an important role as therapeutic agents. Examples include anti-ulcer, antibacterial, antifungal, anti-therosclerotic, anthelmintic, antihypertensive, and cardiotonic agents, as well as, psychotonics

0 L. To the solution of dissolved ore, 1.0 L of a 0.025 M NaCl solution is added, to precipitate silver chloride. The mixture is then filtered and the solid washed with 1.0 L of water. a. The specific ore used consists of a mixture of silver sulfide and