Thermodynamics of Minerals and Mineral Reactions
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چکیده
منابع مشابه
Mechanisms of Pyroxene Alteration to Smectite: Implications for Inferring Elemental Mobility in Martian
Introduction: Orbiter and lander/rover studies of Mars' surface have identified and provided preliminary characterization of surficial materials including igne-ous and sedimentary rocks, possible volcaniclas-tic/pyroclastic rocks, and unconsolidated sediment. Some surfaces expose unaltered anhydrous silicates (militating against extensive interactions with water), but most results (including st...
متن کاملInvestigation of melt distribution reactions, thermobarometry and minerals chemistry of amphibols and plagioclase leucosome, melanosome and mesosome in Takab Hornblend bearing migmatites, northwestern Iran
The process of migmatitization in the Ghareh Naz has resulted in the formation of various rate of partial melting and eventually the formation of a large spectrum of metatexite and diatexite migmatites. Mineral chemistry studies by EPMA method shows that amphibole composition is magnesio-hastingsite and has a metamorphic origin and feldspar composition is andesine to oligoclase. Effective react...
متن کاملبررسی ترکیب شیمیایی و دگرگونی کانیها در طول فرایند دگرگونیهای مختلف در منطقه همدان
Metamorphic rocks of the Hamadan region have experienced regional and also contact metamorphism (due to intrusion of gabbro, diorite and granitic bodies), therefore, their mineral assemblages have formed in multiple stages. Evidence of regional metamorphism (M) and contact metamorphisms at the contact of gabbros (M’1) and porphyroid granites (M’2) are separatable, hower At the contact of h...
متن کاملRODINGITIZATION OF IRANIAN BASIC ROCKS: A NEW INTERPRETATION
Mineral paragenesis of rodingitized basic rocks of Iranian ophiolites are presented and metasomatic reactions between Ca+2 bearing aqueous fluids issued during serpentinization of host ultramafic rock – with magmatic minerals of basic rocks leading to present paragenesis of rodingites are discussed. It is concluded that Ca+2 rich aqueous fluid in equilibrium with serpentinite has high Ca+2 chem...
متن کاملPhase Equilibria in the Metal-Sulfur-Oxygen System Selective Reduction of Metal Oxides and Sulfides: Part I. The Carbothermic Reduction and Calcination of Complex Mineral Sulfides
The difference in the standard Gibbs free energy for the formation of any two oxides or sulfides is the chemical potential for selective reduction of metals from complex minerals. The magnitude of the Gibbs free energy difference is shown by plotting the univariant relationships for relevant sulfides and oxides. In this investigation, three examples of mineral sulfides are considered, and the e...
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