Volumen 21 de la colección Cuba: la Naturaleza y el Hombre. En él se ofrece al lector un exhaustivo estudio –iniciado por el destacado espeleólogo cubano Antonio Núñez Jiménez en la década de 1950- d

En esta nueva edición (cuarta edición española correspondiente a la 21a edición americana del Manual de Mineralogía) se intenta conseguir un equilibrio entre conceptos y principios por una parte y el tratamiento mas descriptivo y sistematico de la Mineralogia por otro.Este objetivo equilibrado requiere el tratamiento de muchos temas. No todos ellos pueden tratarse en un curso de un año y mucho menos en un curso semestral o trimestral. En esta edicion, los capitulos 2 a 9 se refieren a los conceptos, principios y tecnicas.Los capitulos 10 a 13 tratan de la Mineralogia sistematica y descriptiva. El capitulo 14 es una introduccion a la Petrologia y el capitulo 15 ofrece una introduccion a las gemas mas comunes.

En esta nueva edición (cuarta edición española correspondiente a la 21a edición americana del Manual de Mineralogía) se intenta conseguir un equilibrio entre conceptos y principios por una parte y el tratamiento mas descriptivo y sistematico de la Mineralogia por otro.Este objetivo equilibrado requiere el tratamiento de muchos temas. No todos ellos pueden tratarse en un curso de un ao y mucho menos en un curso semestral o trimestral. En esta edicion, los capitulos 2 a 9 se refieren a los conceptos, principios y tecnicas.Los capitulos 10 a 13 tratan de la Mineralogia sistematica y descriptiva. El capitulo 14 es una introduccion a la Petrologia y el capitulo 15 ofrece una introduccion a las gemas mas comunes.

Earths outer crustGeologistsTime and rock unitsGeologic mapWhat are rocks and minerals?Chemical elementsMineralsRocksIgneous rocksExtrusive or volcanic igneous rocksIntrusive igneous rocksSedimentary rocksSoilsSedimentary rock materials in broken fragmentsSedimentary rock materials in solutionCementing materials and chemical sedimentsSedimentary rocks formed by plants and animalsMetamorphic rocksStatic metamorphismContact metamorphismDynamic metamorphismOccurrence and properties of mineralsHow minerals occurCrystalline mineralsCrystalsImperfect crystalsAmorphous mineralsSome distinguishing properties of mineralsColorLusterTransmission of lightHardnessStreak or powderCleavagePartingFractureSpecific gravityEffervescence in acidSome special occurrences of mineralsCave depositsConcretionsGeodesPetrified woodCollecting rocks and mineralsRock and mineral identification chartsHow to use the mineral identification chartsKey to mineral identification chartsMineral identification chartsHow to use the rock identification chartsRock identification chartsDescriptions of some Texas rocks and mineralsAnhydriteAsbestosBariteBasaltCalciteCassiteriteCelestiteCinnabarClayCopper minerals (chalcocite, chalcopyrite, malachite, azurite)DolomiteFeldsparFluoriteGalenaGarnetGneissGoldGraniteGraphiteGypsumHaliteHematiteLimestoneLimoniteLlaniteMagnetiteManganese minerals (braunite, hollandite, pyrolusite)MarbleMicaObsidian and vitrophyreOpalPegmatitePyriteQuartzQuartziteRhyoliteSand and sandstoneSchistSerpentineShaleSilver minerals (argentite, cerargyrite, native silver)SulfurTalc and soapstoneTopazTourmalineUranium minerals (carnotite, uranophane, pitchblende)Volcanic ash (pumicite)Composition, hardness, and specific gravity of some Texas mineralsBooks about rocks and mineralsNontechnical books for beginnersTextbooks and other reference booksSelected references on Texas rocks and minerals

In "The Elements of Blowpipe Analysis," Frederick Hutton Getman delves into the scientific intricacies of blowpipe methods for mineral analysis, meticulously detailing various techniques of qualitative analysis utilizing a blowpipe and chemicals. The book is characterized by its didactic style, combining clear exposition with practical instructions, making it accessible to both novices and experienced practitioners in the field of mineralogy. Set against the backdrop of the early 20th-century scientific exploration, Getmans work emerges as a significant contribution to analytical chemistry, encouraging a systematic approach to mineral study that fuses empirical observation with theoretical understanding. Frederick Hutton Getman was a renowned American mineralogist whose passion for the mineral sciences was evident throughout his career. His extensive academic background and fieldwork experience informed his writing, compelling him to produce a comprehensive resource that not only addresses the technical aspects of blowpipe analysis but also highlights its relevance in broader geological contexts. Getmans dedication to education and dissemination of knowledge in the scientific community reflects his commitment to fostering a deeper understanding of mineralogy. This engaging and informative text is highly recommended for students, educators, and professionals in geology and mineralogy. "The Elements of Blowpipe Analysis" serves as an indispensable guide that bridges theoretical concepts with practical application, solidifying its status as a foundational text for anyone seeking to master the art of mineral analysis.In this enriched edition, we have carefully created added value for your reading experience:- Handpicked Memorable Quotes shine a spotlight on moments of literary brilliance.- Interactive footnotes clarify unusual references, historical allusions, and archaic phrases for an effortless, more informed read.

In "Town Geology," Charles Kingsley presents a remarkable exploration of geological phenomena as they intersect with urban life. Written in an engaging style that seamlessly blends scientific observation with poetic language, Kingsley invites readers to perceive their immediate environments with a geologists eye. The narrative is set in the Victorian context, where industrialization and urbanization were reshaping landscapes and societal perceptions of nature. Through vivid descriptions and accessible explanations, Kingsley highlights the intricate layers of history embedded within everyday townscapes, positioning geology not merely as a science but as a lens through which to understand humanitys relationship with the earth. Charles Kingsley was not only an influential Victorian author but also a noted naturalist and clergyman deeply concerned with the harmony between faith and science. His experiences as a parish priest and his keen interest in natural history profoundly influenced his writings. Kingsleys advocacy for the integration of science within educational frameworks reflects his belief in the moral and intellectual development that stemmed from understanding the natural world, thus shaping the thematic undercurrents of "Town Geology." This book is highly recommended for readers interested in geology, urban studies, or those who appreciate the intersections of literature and science. Kingsleys ability to weave scientific rigor with literary elegance invites readers to revel in the beauty of the earth, prompting a deeper reflection on both the environment and their place within it.In this enriched edition, we have carefully created added value for your reading experience:- A succinct Introduction situates the works timeless appeal and themes.- The Synopsis outlines the central plot, highlighting key developments without spoiling critical twists.- A detailed Historical Context immerses you in the eras events and influences that shaped the writing.- A thorough Analysis dissects symbols, motifs, and character arcs to unearth underlying meanings.- Reflection questions prompt you to engage personally with the works messages, connecting them to modern life.- Handpicked Memorable Quotes shine a spotlight on moments of literary brilliance.- Interactive footnotes clarify unusual references, historical allusions, and archaic phrases for an effortless, more informed read.

A Bahia se destaca nacionalmente na produção de gemas naturais, com produção de qualidade reconhecida internacionalmente.O quartzo é um dos minerais mais abundantes na Terra. É utilizado em grande es