microwave energy has potential for the efficient heating of minerals. minerals or materials, which couple to microwave energy are called dielectrics and many valuable minerals are found to be dielectric. the mineral ilmenite is one which shows good dielectric heating characteristics. in this paper, the effect of microwave heat energy on the partial reduction of oxidized ilmenite oxidized in ...

The results of experiments designed to test the hypothesis that near-surface molecular structure of iron oxide minerals influences adhesion of dissimilatory iron reducing bacteria are presented. These experiments involved the measurement, using atomic force microscopy, of interaction forces generated between Shewanella oneidensis MR-1 cells and single crystal growth faces of iron oxide minerals...

Submitted for the MAR11 Meeting of The American Physical Society Sorting Category: 19.1 (C) First-principles study of spin-state crossovers and hyperfine interactions of ferric iron in magnesium silicate perovskite1 HAN HSU, University of Minnesota, PETER BLAHA, TU Vienna, MATTEO COCOCCIONI, RENATA WENTZCOVITCH, University of Minnesota — The spin-state crossover in iron-bearing MgSiO3 perovskit...

Phosphate and sulfate are essential macro-elements for plant growth and development, and deficiencies in these mineral elements alter many metabolic functions. Nutritional constraints are not restricted to macro-elements. Essential metals such as zinc and iron have their homeostasis strictly genetically controlled, and deficiency or excess of these micro-elements can generate major physiologica...

Eucalyptus obliqua, the most widespread timber tree in Tasmania, is a pioneer after fire which can eliminate the organic layer of forest soil, exposing the underlying mineral soil. We compared seedling growth, mycorrhiza formation, and mineral nutrient limitation in organic layer vs. mineral soil. We grew E. obliqua seedlings separately in pots of organic layer and mineral soil in a glasshouse....

Sports Anemia is extremely common among competitive female swimmers. The mineral, iron, plays an important role in the body’s delivery and use of oxygen to and by working muscles. It has been postulated that a lack of iron in the body can reduce aerobic capacity and impair endurance performance. What remains unclear is the extent to which (1) iron depletion without anemia and (2) iron repletion...

The Great Basin of the Western United States has thin continental crust and geologic structures that have controlled the emplacement of significant precious and base metal mineralization. Many of the mineral deposits in the Great Basin were emplaced by hydrothermal processes that altered the mineralogy of their host rock assemblages and facilitated concentration of metals. In the 1960’s and 197...

Iron is an essential trace mineral for normal mammalian physiology. It is incorporated into iron/sulfur (Fe/S) clusters that serve as important cofactors for many enzymes, including the mitochondrial respiratory chain, and it gives blood and muscle their signature red color through its presence in heme. Because of its involvement in many important cellular processes, dysregulation of iron often...

The main purpose of geometallurgy is to develop a model to predict the variability in the mineral processing performance within the ore body. Geometallurgical tests used for developing such a model need to be fast, practical and inexpensive and include as an input data relevant and measureable geological parameters like elemental grades, mineral grades and grain size. Important in each geometal...

Iron biominerals can form in neutral pH microaerophilic environments where microbes both catalyze iron oxidation and create polymers that localize mineral precipitation. In order to classify the microbial polymers that influence FeOOH mineralogy, we studied the organic and mineral components of biominerals using scanning transmission X-ray microscopy (STXM), micro X-ray fluorescence (lXRF) micr...