Prospector's Guide to Gemstones in Australia
Author : Nance Perry
Publisher :
Page : 112 pages
File Size : 23,23 MB
Release : 1982
Category : Precious stones
ISBN : 9780730102663
Author : Nance Perry
Publisher :
Page : 112 pages
File Size : 23,23 MB
Release : 1982
Category : Precious stones
ISBN : 9780730102663
Author : Nance Perry
Publisher : Raupo
Page : 112 pages
File Size : 48,88 MB
Release : 1982
Category : Precious stones
ISBN : 9780589503017
Author : John Joseph Mills
Publisher : Woodhead Publishing Limited
Page : 400 pages
File Size : 30,28 MB
Release : 1990
Category : Reference
ISBN :
Author : P.C. Keller
Publisher : Springer Science & Business Media
Page : 315 pages
File Size : 26,32 MB
Release : 2012-12-06
Category : Science
ISBN : 1468466747
Each gem deposit-whether of primary origin in the parent rocks; or secondary as alluvial placers in valley floors, river gravels, or the sand of oceanic shelves presents an eloquent chronicle of the Earth's life story. It reveals to the expert the prodigious processes which formed the present crust of our planet, of which this volume discloses a small but exciting detail. The materials of the Earth's crust are the rocks. In this book, the author expounds on how they were formed, why they altered, why they became the cradles of precious gemstones, how they are categorized, and how they are now exploited by man. What initiates the growth of gemstones? How do they crystallize? Why do gemstones of the same species, originating from different sources, vary? What causes the occurrence of varieties? Why do diamonds, unlike other precious stones, occur not near the Earth's surface in its crust, but deep down beneath it in the upper mantle? These are only a few of the entrancing subjects discussed in this enlightening volume. The reader learns that the Earth is surprisingly alive and altering constantly-sometimes through slow and equable changes and at times by violent and tremendous cataclysms, events from which gemstones issue.
Author :
Publisher : D. W. Thorpe
Page : 840 pages
File Size : 33,81 MB
Release : 1995
Category : Biography & Autobiography
ISBN :
Author : Max Wilhelm Von Bernewitz
Publisher :
Page : 568 pages
File Size : 29,54 MB
Release : 1963
Category : Mines and mineral resources
ISBN :
Author : L J Ettinger
Publisher :
Page : 182 pages
File Size : 37,97 MB
Release : 2020-10-02
Category :
ISBN : 9781099152108
This book contains data on the mineral deposits themselves, broken down by magmatic, hydrothermal, secondary and placer deposits, as well as gemstones. Determinative tables, specific geologic environment references and a glossary round out this book. This Bible should appeal to the reader who wants a deeper understanding of geologic processes.-----------------------------I have no hesitation recommending this most useful "Bible" to all students of gemology. Not only will you enjoy reading this book, you will be amazed at what you will learn about the practical aspects of mineral identification, with the assistance of the Determinative Tables and the listing of Geologic Environments of Minerals. Its purchase is highly recommended for students. Len Ettinger's more than decades of expertise in exploration geology is obvious. This is indeed a book to teach the practically applicable basics of field mineral identification and prospecting techniques. -Revered Australian gemologist Grahame Brown, former editor of the Journal of the Gemmological Association of Australia-----------------------------The Rockhound and Prospector's Bible is more than just a basic text for the gold-panner or rockhound. It is actually a study guide which begins by giving the reader a general introduction to Geology. This detailed, yet simple to understand volume is recommended for those who are interested in how mineral and gems came to be, rather than just giving directions to sites where they can be located. - Stanley W. Paher, in the Las Vegas Review Journal
Author : Nance Perry
Publisher :
Page : 160 pages
File Size : 46,33 MB
Release : 1997
Category : Australia
ISBN : 9780730105008
First published in 1982 as 'A Prospector's Guide to Gemstones'. Provides information about tools, permits and local regulations covering fossicking. Lists the gemstones found in each Australian state and describes gems in their natural state. Includes maps, colour photographs of gems, suggestions for further reading, glossary and index.
Author : Thomas Findlay Morris
Publisher :
Page : 130 pages
File Size : 17,14 MB
Release : 1995
Category : Diamond mines and mining
ISBN :
Author : John A. Talent
Publisher : [Milton, Q.] : Jacaranda
Page : 348 pages
File Size : 18,75 MB
Release : 1970
Category : Science
ISBN :