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Branching and Oscillatory Patterns in Plagioclase and Mississippi-Valley Type Sphalerite Deposits,s, such as oscillatory zoning (in which the chemical composition fluctuates along a traverse within the crystal) or branching patterns (characterized by a tree-like crystal form) that arise spontaneously as a result of growth kinetics. Liesegang was among the first to investigate the kinetics of a c

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Numerical Modeling of Calcite Coarsening in the Aureoles of , Dikes: Analysis of the Kinetic Controon kinetics. Wallrocks may be sampled at the scale of individual beds from the intrusive contact to beyond the limit of metamorphism so that the progress of metamorphic processes may be traced from their inception to their completion. The superficially simple intrusion geometry of these dikes, appro

側(cè)面左右

Nonequilibrium Growth of Crystals from Supersaturated Solutions, under which they grew. Some crystals are faceted, for example quartz crystals; metal crystals often grow with smooth shapes, and salts and organic materials often grow with needle-like structures. Dendritic crystals, which are the subject of this paper, are also very common. Dendrites are crystals

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The Diffusion-Limited Aggregation Model and Geological Pattern Formation,me, to a growing cluster or aggregate of particles via random walk paths starting from outside of the region occupied by the cluster. In the most simple version of the model (Witten and Sander, 1981), a simulation is started by occupying a site in the center of a square or triangular lattice to repr

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Biogenic Silica: A Model of Amorphous Structure Control, of minerals. Many silicates are also formed in combination with other elements such as magnesium, aluminium, calcium and iron and as such form many of the minerals in our rocks and soils. Weathering processes over millions of years have also resulted in the occurrence of silica (silicon dioxide) in

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Surface Area of Primary Silicate Minerals,nerals, rate of growth of authigenic minerals, adsorption and desorption of metal and organic contaminants on soil and sediment grains, neutralization of acid deposition by weathering reactions, oxidation and reduction of mmetal-containing phases and solutes, clumping of colloids or bacteria by elec