Mineralogía y gemas

Matemáticas y ciencia / Química / Mineralogía y gemas (589)

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  • Audit de la procédure de gestion des concessions pétrolières
    Mohamed Aziz Boussaid
    Les sociétés pétrolières opèrent dans un secteur ayant un aspect stratégique significatif pour tous les pays sans exception. Et outre l’aspect stratégique, ce secteur de par sa nature, nécessite des investissements énormes dans toutes les phases allant de l’exploration, en passant par le développement et la production jusqu’à la mise hors service et abandon.Il existe d’autres r...
    Disponible

    61,57 €

  • Avant-Projet d’Exploitation du Gisement de KAKANDA-OUEST
    Nawej Robert Patterson
    Le projet d’exploitation du gisement de Kakanda-Ouest a été envisagé par l’entreprise Boss Mining dans le but de pallier aux problèmes de rupture d’alimentation en minerai de cuivre oxydé aux usines hydrométallurgiques de Luita. Cette étude ayant été menée à partir d’un modèle géologique numérisé du polygone minier de Kakanda comprend une détermination du pit optimal et ultime,...
    Disponible

    93,64 €

  • Influencia mineragráfica en los procesos metalúrgicos
    Alvaro Soto
    El presente trabajo de investigación, tiene como objetivo fundamental dar a conocer la influencia mineragráfica, para la recuperación de oro utilizando la técnica del análisis de microscópico y macroscópica, luego se analiza en el laboratorio metalúrgico con la finalidad de determinar los porcentajes de recuperación. Mediante un estudio geológico se determinó que el batolito de...
    Disponible

    97,45 €

  • Geoquímica del Arsénico en la Zona Crítica Minera Cartagena - la Unión
    Salvadora Martínez López
    La explotación y beneficio de los recursos minerales, históricamente no controlados (desde un punto de vista ambiental) en los distritos mineros, ha provocado que se presente una extensa contaminación de suelos y sedimentos por arsénico y otros elementos traza. Los estudios para llevar a cabo los análisis de riesgos de estos espacios contaminados, requieren del conocimiento de ...
    Disponible

    123,42 €

  • Modeling Volcanic Processes
    ...
    Disponible

    118,49 €

  • Influencia de la temperatura y tiempo de residencia
    Bella Luz Herrera Aldave / Gary Christiam Farfán Chilicaus / Victor Samuel Chávez Díaz
    Se estudió la Influencia del tiempo de residencia y temperatura en la recuperación de zincpor lixiviación oxidante con persulfato de amonio. El estudio experimental se realizóutilizando un concentrado disuelto en solución con contenidos de zinc sometida a diferentestiempos de residencia a 2, 4, 6 horas, y diferentes temperaturas a 20, 40 y 60 °C, con unaconcentración inicial de...
    Disponible

    60,58 €

  • 14th International Congress for Applied Mineralogy (ICAM2019)
    Sergey Glagolev
    This open access proceedings of the 14th International Council for Applied Mineralogy Congress (ICAM) in Belgorod, Russia cover a wide range of topics including applied mineralogy, advanced and construction materials, ore and industrial minerals, mineral exploration, cultural heritage, etc. It includes contributions to geometallurgy, industrial minerals, oil and gas reservoirs ...
    Disponible

    87,39 €

  • 14th International Congress for Applied Mineralogy (ICAM2019)
    Sergey Glagolev
    This open access proceedings of the 14th International Council for Applied Mineralogy Congress (ICAM) in Belgorod, Russia cover a wide range of topics including applied mineralogy, advanced and construction materials, ore and industrial minerals, mineral exploration, cultural heritage, etc. It includes contributions to geometallurgy, industrial minerals, oil and gas reservoirs ...
    Disponible

    102,90 €

  • ULTRABASIC ROCKS
    RAJAPRIAN K
    The layered mafic-ultramafic intrusion of the Archaean high grade Bhavani complex contains several discontinuous E-W trending mafic-ultramafic bodies mainly consisting of gabbro, meta-gabbro, pyroxenite and amphibolite. The bulk composition indicates that the source of magma is tholeiitic and perhaps represents a MORB or island arc setting. Chromite, pyrrhotite, pyrite, chalcop...
    Disponible

    117,89 €

  • Diagenesis and its Role in Iron and Manganese Mineralization
    Ezzat Khedr
    This review is drawn into theoretical, field, and experimental studies in two main areas. The first area involves the investigation of the physical and chemical characteristics of iron (Fe) and manganese (Mn) deposits, and the development of genetic models for use in mineral exploration. The second area deals with the nature of geothermal systems against weathering system as tw...
    Disponible

    57,03 €

  • Beach Rambles In Search Of Seaside Pebbles And Crystals
    John George Francis
    Beach Rambles In Search Of Seaside Pebbles And Crystals: With Some Observations On The Origin Of The Diamond And Other Precious Stones.This book is a result of an effort made by us towards making a contribution to the preservation and repair of original classic literature.In an attempt to preserve, improve and recreate the original content, we have worked towards:1. Type-settin...
    Disponible

    13,27 €

  • Wirtschaftliche Auswirkungen von ASM im Bezirk Taita Taveta, Kenia
    Bernard KIpsang Rop / Ian Krop / Seroni Anyona
    Der handwerkliche und kleine Bergbau (ASM) beschäftigt direkt und indirekt eine Reihe von Personen im Bezirk Taita Taveta (TTC) auf befristeter Basis, während in den Bezirksbezirken, in denen Mineralien abgebaut werden, andere Bergbauaktivitäten laufen. Diese einkommensschaffende Tätigkeit der ASM spielt eine sehr wichtige Rolle, indem sie berufliche Arbeitsplätze schafft, die ...
    Disponible

    90,94 €

  • Application du concept Cleaner Production
    Tahirisolo Hermann Voninahitriniaina
    Le lancement du projet pilote d’injection continue de vapeur est prévue pour le début de l’année 2013. Ce projet consiste à injecter de la vapeur d’eau dans le réservoir pour rendre l’huile plus fluide et plus mobile avant d’être pompé à la surface avec la vapeur d’eau condensé. Le produit obtenu est un mélange eau - pétrole qu’on doit séparer l’une de l’autre par des dispositi...
    Disponible

    89,62 €

  • Austrian Fahlores
    Sherif Kharbish
    Fahlores from seven Austrian localities (Haidbachgraben, Schendleck, Veitsch, Johnsbach, Mallnock, Mauterndorf and Schwaz) together with two samples from UK (Cornwall) and Slovakia (Kremnice) were mineralogically, chemically, and spectroscopically studied. Most of the Austrian fahlores are located in the Greywacke zone. The studied fahlores have been classified into tennantite,...
    Disponible

    116,96 €

  • Austrian Fahlores
    Sherif Kharbish
    Fahlores from seven Austrian Greywacke zone (Haidbachgraben, Schendleck, Veitsch, Johnsbach, Mallnock, Mauterndorf and Schwaz) together with one sample from UK (Cornwall) and one sample from Slovakia (Kremnice) have been microscopically, chemically, spectroscopically and structurally investigated. The studied fahlores have been classified on the basis of td-content into tennant...
    Disponible

    105,15 €

  • Responsabilité Sociétale des Entreprises Minières
    LONGA WEMBELO Emile / Nadege NGUZ
    Ce travail entrepris a pour objectif principal d’amener les entreprises minières à intégrer l’approche de Responsabilité Sociétale des Entreprises dans leurs la politiques d’émergence afin de contribuer à la réduction de la pauvreté dans les zones minières. Les résultats de nos recherches montrent que l’entreprise Ruashi Mining n’intègre pas la Responsabilité Sociétale dans sa ...
    Disponible

    55,22 €

  • Elementos Básicos de Petrología Ígnea
    Alejandro José Toselli
    El propósito del libro ha sido integrar las relaciones geológicas, con los avances en los experimentos sobre el origen de las rocas ígneas, con la experiencia en el dictado de clases de Petrología ígnea y metamórfica en la Universidad Nacional de Tucumán. Se ha intentado resumir e integrar los procesos petrogenéticos con las asociaciones de rocas, que se sostienen sobre el desa...
    Disponible

    125,33 €

  • Essentials of Igneous and Metamorphic Petrology
    B. Ronald Frost / Carol D. Frost
    ...
    Disponible

    88,20 €

  • Friction Stir Welding of AA6082
    Joy Prakash Misra / Shubham Verma
    In present scenario, ferrous metals are increasingly replaced by non-ferrous metals especially aluminium alloys in case of structural applications owing to their unique features: high strength to weight ratio, high formability, excellent corrosion resistance, etc. Although, welding of aluminium is a major problem faced by aerospace, marine and spacecraft industries owing to its...
    Disponible

    79,28 €

  • The Curious Lore of Precious Stones
    George Frederick Kunz
    This foundational study of gemstone lore presents a comprehensive history of precious and semi-precious stones and a survey of their particular properties. Author George Frederick Kunz—America’s foremost gemologist, gemstone, and collector of the period—reveals a treasure trove of superstitions, symbolisms, and metaphysical properties associated with specific gems through the a...
    Disponible

    27,53 €

  • The minerals and mineral localities of North Carolina, being chapter I, of the second volume of the Geology of North Carolina
    F. A. Genth / W. C. Kerr
    This book has been considered by academicians and scholars of great significance and value to literature. This forms a part of the knowledge base for future generations. We have represented this book in the same form as it was first published. Hence any marks seen are left intentionally to preserve its true nature. 3 ...
    Disponible

    8,63 €

  • Mineral Surface Reactions at the Nanoscale
    Reactions at mineral surfaces are central to all geochemical processes. As minerals comprise the rocks of the Earth, the processes occurring at the mineral–aqueous fluid interface control the evolution of the rocks and hence the structure of the crust of the Earth during processes such as metamorphism, metasomatism, and weathering. In recent years focus has been concentrated on...
    Disponible

    59,82 €

  • New Mineral Species and Their Crystal Structures
    The current Special Issue of Minerals entitled “New Mineral Species and Their Crystal Structures” contains articles with full descriptions of recently discovered mineral species (verneite, thermaerogenite, parafiniukite, nöggerathite-(Ce), cerromojonite, aurihydrargyrumite, sharyginite, fiemmeite, oyonite, tiberiobardiite, and ariegilatite) and with recent results in the invest...
    Disponible

    59,77 €

  • Field Collecting Gemstones and Minerals
    John Sinkankas
    With easy-to-follow instructions on how to extract, trim, preserve, store and exhibit gemstones and minerals, this guide does a superb job of introducing beginners to the science of field collecting.Featuring clear and interesting illustrations, Field Collecting Gemstones and Minerals covers the fundamental aspects of mineral collecting, including how to plan for trips, read to...
    Disponible

    73,75 €

  • Manual of Rapid Mineral Identification - Volume I
    Uwe Richard Kackstaetter
    This unique publication was written with a broad spectrum of users in mind, from the novice rockhound to the trained professional, including students, prospectors, geoscientists and mineral laboratories. It is literally a step-by-step cookbook approach to mineral identification and includes easily administered  "how-to methods" some of which are proprietary. For the first time ...
    Disponible

    37,50 €

  • Carusi
    Louis Romano
     A fiery explosion in the sulfur mine leaves 5 year-old Aspanu head of his family. His mother signs papers saying he will now work in the 100+ degree mines to pay off their debt. Civil unrest ensues as people are fed up with unfair labor practices & hold clandestine meetings to stage a defensive riot. Backlash looms when the mine owners find out.   ...
    Disponible

    22,79 €

  • Adventures in Earth and Environmental Science Book 1
    Dr Peter T Scott
    Adventures in Earth and Environmental Science Book 1. This is the first book of two which looks at the earth its matter energy, life , relationships and how these interact as a whole. The Earth is seen as a closed system containing the Earth's materials and living things whilst allowing the necessary flow of energy in and out of the planet. The atmosphere, hydrosphere, geos...
    Disponible

    84,55 €

  • Efectos toxicológicos de los sedimentos del río San Jorge
    Britzz Ortega / Carlos Castellón / Lesly Tejeda Benitez
    El río San Jorge es una importante fuente de agua dulce en Colombia ubicado en cercanías a una zona de extracción de níquel. En el presente estudio se evaluó el impacto toxicológico de dicha actividad minera sobre el Caenorhabditis elegans, para lo cual se tomaron muestras de sedimentos en 20 sitios del río San Jorge (Colombia) y se analizaron 48 metales, comparando sus concent...
    Disponible

    94,80 €

  • Diseño de la cadena de suministro verde en la minería de carbón
    Erika Johana Rozo Ramirez / Myriam Quintero
    El presente proyecto de investigación está enfocado en el desarrollo del diseño de la cadena de suministro orientado hacia la logística verde, el cual busca el desarrollo de la sostenibilidad ambiental en la minería de carbón tanto de tipo abierto como de socavón en el departamento de Cundinamarca, puesto que en los últimos años esta actividad ha tenido un amplio auge y crecimi...
    Disponible

    93,60 €

  • Cálculo alterno de resistividad en pozos petroleros del Ecuador
    Diego Pacheco Hernández
    El objetivo del trabajo fue diseñar un modelo matemático para obtener una resistividad calculada a partir del análisis de registros de saturación de agua en pozos petroleros del campo Edén Yuturi. Para el análisis de los registros de saturación, se inició con la normalización de las curvas de relación Carbono/Oxígeno (COR), seguido de la designación de familias a las curvas de ...
    Disponible

    60,44 €