Collector's Guide to the Tourmaline Group

Author: R. J. Lauf

Publisher: Schiffer Publishing Limited

ISBN: 9780764337758

Category: Science

Page: 93

View: 4677

Among rock-forming minerals, the colorful tourmaline group is a favorite of both mineral collectors and gemologists. Superb examples are found at many locales worldwide, and in diverse geological settings from pegmatites to schists. Over 120 clear, crisp photos show each mineral in its geological context. This book will help mineral and gem collectors understand tourmaline mineralogy and see how changes in nomenclature reflect our evolving understanding of the group. The text explains the chemistry and taxonomy of the group, the environment in which tourmalines form, provides a detailed entry for each mineral including locality information and full-color photos wherever possible so that collectors can see what good specimens look like and which minerals one might expect to find in association with them. An extensive bibliography is provided for readers who wish to learn more. Every serious mineralogist, gemologist, and rock hound will need this book.

Modern Jeweler’s Consumer Guide to Colored Gemstones

Author: David Federman

Publisher: Springer Science & Business Media

ISBN: 1468464884

Category: Science

Page: 253

View: 4387

Since early 1989, a gem dealer I've known for years has been calling me every few weeks to brief me on mounting mayhem in Colombia's lucrative emerald market. The troubling gist of these calls is always this: There is a full-fledged turf war going on between that South American country's bustling drug and gem trades for control of its emerald ex port business. According to this dealer and several others, anywhere from two to four thousand emerald industry people, mostly miners and deal ers, have been murdered since 1980. No doubt the gem sector, itself never gun shy, has retaliated in full and in kind. After all, the two groups have banded together in an intermittent alliance against a common enemy-Communist guerillas-with results the CIA would envy. I mention this bloodshed because of something the gem dealer once said to me: "I bet you never think of what a gem has to go through to get to a jewelry store:' He's right. I tend to think of colored stones as things of beauty, not objects of gruesome power struggles between mining kingpins and drug lords. Can you blame me, or anyone with insider knowledge, if a gem sheds any connection with its past once sculpted by a cutter into the glittering mar vel we see in a jeweler's showcase? Like Odysseus listening to the sirens' song, we become victims of an aesthetics-induced amnesia.

A Collector's Guide to Rock, Mineral, & Fossil Localities of Utah

Author: James R. Wilson

Publisher: Utah Geological Survey

ISBN: 1557913366

Category: Fossils

Page: 148

View: 1654

With the tremendous growth of population in this and neighboring states, there are more collectors than ever before and with the rapidly escalating prices for mineral and fossil specimens in the retail market, there is a great demand for displayable material. It has become necessary for professional geologists, hobby collectors, and commercial collectors to recognize each others existence and to try to work together within a framework of regulation, courtesy, and common sense so that material of scientific value is not lost and undue restrictions are not placed upon collecting. There is a continuing need for collectors and professionals to work together with resource managers and legislators to develop workable laws and rules affecting the collecting of minerals and fossils. This publication contains details information about collecting areas, divided by county to make for ease of use. Each collecting area contains information about the minerals, rocks, or fossils present, map recommendations, and other helpful tips on getting to the sites.

Handbook of Flotation Reagents: Chemistry, Theory and Practice

Volume 2: Flotation of Gold, PGM and Oxide Minerals

Author: Srdjan M. Bulatovic

Publisher: Elsevier

ISBN: 9780080932095

Category: Technology & Engineering

Page: 230

View: 5747

Handbook of Flotation Reagents: Chemistry, Theory and Practice: Flotation of Gold, PGM and Oxide Minerals, Volume 2 focuses on the theory, practice, and chemistry of flotation of gold, platinum group minerals (PGMs), and the major oxide minerals, along with rare earths. It examines separation methods whose effectiveness is limited when using conventional treatment processes and considers commercial plant practices for most oxide minerals, such as pyrochlore-containing ores, copper cobalt ores, zinc ores, tin ores, and tantalum/niobium ores. It discusses the geology and mineralogy of gold, PGMs, and oxide minerals, as well as reagent and flotation practices in beneficiation. The book also looks at the factors affecting the floatability of gold minerals and describes PGM-dominated deposits such as Morensky-type deposits, hydrothermal deposits, and placer deposits. In addition, case studies of flotation and beneficiation in countries such as Canada, Africa, Russia, Chile, and Saudi Arabia are presented. This book will be useful to researchers, university students, and professors, as well as mineral processors faced with the problem of beneficiation of difficult-to-treat ores. Looks at the theoretical aspects of flotation reagents Examines the practical aspects of using chemical reagents in operating plants Provides guidelines for researchers and engineers involved in process design and development

A Field Guide to Rocks and Minerals

Author: Frederick H. Pough

Publisher: Boston : Houghton Mifflin


Category: Mineralogy

Page: 317

View: 8852

An identification guide to rocks and minerals.

Gems and Gemology

Author: N.A

Publisher: N.A


Category: Precious stones

Page: N.A

View: 6861

Gems & Gemology

Author: N.A

Publisher: N.A


Category: Precious stones

Page: N.A

View: 2121

Gems and Jewels

Fact and Fable

Author: Christopher Cavey

Publisher: Book Sales

ISBN: 9781555217457

Category: Gems

Page: 144

View: 6386

The Cumulative Book Index

Author: N.A

Publisher: N.A


Category: American literature

Page: N.A

View: 3906

A world list of books in the English language.

Cumulative Book Index

World List of Books in English

Author: N.A

Publisher: N.A



Page: N.A

View: 8216


A Lively Guide for the Casual Collector

Author: Daniel J. Dennis

Publisher: Harry N. Abrams

ISBN: 9780810941267

Category: Science

Page: 192

View: 6307

Provides information on colored gems and diamonds, including things to be aware of before buying a precious stone such as color, cut, and setting.

DK Eyewitness Travel Guide: Scotland


Author: Juliet Clough,Keith Davidson,Sandie Randall,Alastair Scott

Publisher: Dorling Kindersley Ltd

ISBN: 1405393556

Category: Travel

Page: 240

View: 5853

DK Eyewitness Scotland travel guide will lead you straight to the best attractions this wild country has to offer. Packed with photographs, illustrations and detailed maps, discover Scotland region by region; from the culturally diverse and architecturally magnificent Glasgow to the peerless beauty of the highlands. The guide provides all the insider tips every visitor needs from where to walk with Reindeers to how to tread the Malt whisky trail, with comprehensive listings of the best hotels, resorts, restaurants, and nightlife in each region for all budgets. You'll find 3D cutaways and floorplans of all the must-see sites plus street-by-street maps of all the fascinating cities and towns of Scotland. DK Eyewitness Scotland explores the country's castles, lochs, fishing hot spots and famous golf courses, focussing on the best scenic routes from which to explore the rugged Scottish landscape. With up-to-date information on getting around by boat, bus, or steam train and all the sights listed town by town, DK Eyewitness Scotland is indispensable. Don't miss a thing on your holiday with the DK Eyewitness Scotland. Now available in PDF format.

DK Eyewitness Travel Guide: Scotland

Author: DK

Publisher: Dorling Kindersley Ltd

ISBN: 1409349179

Category: Travel

Page: 232

View: 4795

The DK Eyewitness Scotland Travel Guide is your indispensable guide to this beautiful part of the world. The fully updated guide includes unique cutaways, floorplans and reconstructions of the must-see sites, plus street-by-street maps of all the fascinating cities and towns. The new-look guide is also packed with photographs and illustrations leading you straight to the best attractions on offer. The uniquely visual DK Eyewitness Travel guide will help you to discover everything region-by-region; from local festivals and markets to day trips around the countryside. Detailed listings will guide you to the best hotels, restaurants, bars and shops for all budgets, whilst detailed practical information will help you to get around, whether by train, bus or car. Plus, DK's excellent insider tips and essential local information will help you explore every corner of Scotland effortlessly. DK Eyewitness Scotland Travel Guide - showing you what others only tell you. Now available in PDF format.

The Crystal Code

Balance Your Energy, Transform Your Life

Author: Tamara Driessen

Publisher: Ballantine Books

ISBN: 0525622217

Category: Body, Mind & Spirit

Page: 288

View: 2137

Destress, recharge, and heighten your intuition with this indispensable modern introduction to unlocking the ancient power of crystals and creating positive change in your life. Rose quartz, amethyst, tourmaline, and many other eye-catching crystals have captivated people for centuries. Lovely to look at and pleasing to hold, these stones are much more than mere decoration. Throughout history they have been thought to possess divinatory, protective, and healing properties. Today, with wellness experts praising their good vibes, crystals and gemstones have been embraced as essential elements of self-care for their ability to manifest harmony, health, and connection with ourselves on a deeper level. Crystal healer Tamara Driessen sees these glittering stones as cosmic technology—absorbing, transforming, and transmitting energy. In The Crystal Code, she brings her insight and experience to help you harness the earth’s energy to • boost your confidence (Peacock Ore) • destress and recenter (dusky blue Celestite) • take control (purple Amethyst) • get over your ex (rosy pink Kunzite) • boost your energy (Orange Calcite) You’ll also discover the best ways to cleanse your stones and program them with your intentions. Driessen’s meditations and self-care rituals will help you follow your intuition, respect your body, and center your priorities. Whether you’re a modern mystic, a new collector, or just crystal curious, this stylish, accessible book will help you harness the powers of these mystical stones to quiet your mind, enliven your heart, and transform your life.

Der Turmalin

eine Monographie

Author: Friedrich Benesch,Bernhard Wöhrmann

Publisher: N.A

ISBN: 9783825174743


Page: 255

View: 7978