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Now showing items 3432-3451 of 38944
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(1991)The equilibrium between chromite and melt has been determined on four basalts at temperatures of 1200–1400°C over a range of oxygen fugacity (fo2) and pressures of 1 atm and 10 kb. The Cr content of chromite-saturated melts ...
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(1999)The Zagami meteorite is a Martian basalt which exhibits multiple lithologies formed by fractional crystallization. While the rock has been widely studied petrologically, its genesis is poorly constrained from an experimental ...
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(1987)Monoclinic pyroxenes are rock-forming minerals for a broad group of ultramafic upper mantle rocks (garnetiferous, garnet-spinel, garnet- or spinel-free, garnetilmenite, ilmenite-containing, etc.) which occur as inclusions ...
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(2002)Although the investigation of micas dates back to the pre-scientific era (see Cipriani, this volume), the idea of polytypism (originally not distinguished from “polymorphism”) in the micas did not ensue until 1934, when ...
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(2001)The shape, pattern and crystallographic orientation of grain boundaries represent important characteristics of crystalline material and contain information about its deformation and annealing history. The present study ...
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(2004)We compare the frictional strengths of 17 sheet structure mineral powders, measured under dry and water-saturated conditions, to identify the factors that cause many of them to be relatively weak. The dry coefficient of ...
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(2002)Studies of the microstructure, crystallographic orientation, chemical composition and three-dimensional shape of sigmoidal garnet reveal a number of features that can be used to discuss its origin, and in particular to ...
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(2004)A crystalline form of hydrated calcium phosphate, brushite (CaHPO(4)(.)2H(2)O), has been studied by means of total energy First Principles calculations based on the Density Functional Theory (DFT) approximation. The ...
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(2005)Evaluation of the long-term health risks of uranium contamination in soils, sediments, and groundwater requires a fundamental understanding of the various processes affecting subsurface transport of uranium, including ...
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(2005)The isotopic composition of dissolved Cu and solid Cu-rich minerals [δ65Cu (‰) = (65Cu/63Cusample/65Cu/63Custd) - 1)*1000] were monitored in batch oxidative dissolution experiments with and without Thiobacillus ferrooxidans. ...
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(2005)40Аг/39Аг датированием установлено, что формированию крупного Cu-Mo-порфирового месторождения Эрдэнэтуин-Обо, связанного со становлением эрдэнэтского рудоносного порфирового комплекса, предшествовало развитие в районе ...
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(2001)The HS2-NUVEL1 model being used for current plate velocities relative to hotspots is shown to be generally inconsistent with the observed hotspot data sampled from non-Pacific regions. Instead, we determine the T22A model, ...
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(2001)The nomenclature of phyllosilicates is discussed in relation to structural variations of layers and interlayers. Some discrepancies in the nomenclature which arose due to historical reasons and different viewpoints may be ...
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(2014)The article is concerned with the hydrogeochemical peculiarities of the underground waters of the liquidated mine Mgachi. It has been found that the mine being flooded, technogenic (mine) waters were produced in the exhausted ...
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(2004)A review of the early history of the Cuyania terrane and the numerous pioneering works of the past century provides the present robust framework of evidence supporting a derivation from Laurentia, travel towards Gondwana ...
Now showing items 3432-3451 of 38944