Libros de Geología, página 4 de 113

A comprehensive reference guide to gem and ornamental materials, this book deals with each gem species, outlining all the features a gem tester has to know before making an identification. The experienced author team describe not only each natural gem species, but also their synthetic counterparts, and the materials used as imitations, demonstrating how to avoid potentially costly mistakes. End of chapter summaries, details of further reading, and the companion web site combine to provide all the support needed by professional gemmologists, antique and gemstone dealers, jewellers and students. * Learn how to put the theory of identification into practice with this accessible guide * 60 full colour photographs to illustrate identifying features * Chapter summaries and companion website support provide easy understanding and reference

In this edition, 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. Important correlations between these aspects of mineralogy are emphasized wherever possible. The content of each section has been updated where needed in the light of published research over the 21 years between editions. Tables of over 200 chemical analyses and formulae are included and a number of older entries have been replaced by more recent examples.Major new features: Entirely new views of crystal structures in perspective using CrystalMaker colour images; Free CrystalViewer interactive CD with 100 mineral structures included (or download the updated special edition of Crystal Viewer DHZ edition available exclusively here.) 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 Colour strip with appropriate interference colours and birefringences for the main rock-forming mineralsThis 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. 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.

En el primer volumen de esta obra se presenta una síntesis de los conocimientos sobre las asociaciones minerales, tanto en medios naturales (las rocas y yacimientos) como en otros sintéticos...En el segundo volumen se describen exhaustivamente las caracteristicas de una poblacion de unas 600 especies minerales, acompañadas de bibliografia sobre cada una de ellas y fotografias a todo color, estas fotografias reflejan las caracteristicas opticas sin analizador y con analizador, y a su vez, son representativas de las asociaciones minerales de la especie en cuestion.

This textbook provides a complete introduction to Hydrogeology It is a comprehensive reference for earth science professionals involved in groundwater exploitation as well as for geotechnical engineers This English translation of the German textbook Hydrogeologie by Holting & Coldewey which has been published in its 8th edition provides insights into the sources and reservoirs of groundwater the dynamics of fluid flow and the physical and chemical composition of groundwater It also gives an overview about the economic value of groundwater and its exploitation and use A consistent use of the internationally accepted SI units as well as the formula symbols in the text contributes to the understandability

El Mar Mediterraneo - Ii/1 Hofrichter, R. La Guía sistemática y de identificación, el segundo volumen de los tres que forman El mar Mediterráneo, presenta la fauna y flora del Mediterráneo en toda su pluralidad y fascinacion. Lleno de graficos y fotografias en color, no solo ofrece un amplio panorama de los microorganismos, hongos, plantas y animales inferiores de este habitat marino, sino que sus minuciosas descripciones individuales permiten a biologos, buceadores y aficionados a la naturaleza clasificar miles de especies de los grupos mas diversos.

Recopila 91 normas UNE sobre la ingeniería del agua desde el punto de vista del abastecimiento, la depuración y los sistemas de redes de alcantarillado.