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Zeolite crystalviewer6/7/2023 Liquids and gases can pass through these spaces or pores. Zeolites are therefore used as sieves or filters to remove molecules of a particular size. Consequently, any molecule similar in size to water or smaller can pass through the spaces in the zeolite. This water moves easily in and out of the crystal. Zeolites contain water in the spaces between the aluminum and silica molecules (tetrahedra). Used in water softeners, catalysts, cat litter, odor control, and for removing radioactive ions from nuclear plant effluent. Sampling drill holes, the area being mined, the haulage truck, and the process stream are all used for quality control. Selective mining and blending during removal or stockpiling controls any variation in the purity of the ores. Conventional earth-moving equipment, including scrapers and loaders, are used to mine the zeolite bed. Relation to Miningīoth bedded sedimentary and thick vitroclastic zeolite deposits are mined by surface methods. ![]() Most common zeolite minerals are analcime, chabazite, clinoptilite, mordenite, natrolite, heulandite, phillipsite and stilbite. They are found in geologically young volcanic fields. They usually form beautiful well-formed crystals with pale colors, and are relatively soft and can be crushed and powdered. Zeolites are a group of silicate minerals with unusual properties with industrial importance. For doctorate students, and research workers in the Earth Sciences as well as those in Materials Science and other related disciplines, this work can be useful as a condensed version of the very extensive treatment presented in the volumes of the DHZ Series ‘ Rock-Forming Minerals’, second edition.Colorless, white, yellow, pink, red Luster This book will be useful to undergraduate students of mineralogy, petrology and geochemistry, especially those at third or fourth year, engaged in more advanced courses or specialized projects, and also as a reference work for students for ‘Masters’ degrees by taught courses or research. ![]() Major new features include: Entirely new views of crystal structures in perspective using CrystalMaker colour images CrystalViewer interactive CD with >100 mineral structures included Over 60 colour photographs of minerals in thin sections of rocks under the petrological microscope Considerably expanded treatment of feldspar and zeolite minerals Mineral identification table based on birefringence and listing other properties and Colour strip with appropriate interference colours and birefringences for the main rock-forming minerals. Tables of over 200 chemical analyses and formulae are included and a number of older entries have been replaced by more recent examples. The content of each section has been updated where needed in the light of published research over the 21 years between editions. Important correlations between these aspects of mineralogy are emphasized wherever possible. In this edition of Introduction to the Rock-Forming Minerals, most of the commonly occurring minerals of igneous, metamorphic and sedimentary rocks are discussed in terms of structure, chemistry, optical and other physical properties, distinguishing features and paragenesis.
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