Fb2 The beauty of banded agates: An exploration of agates from eight major worldwide sites ePub
by Michael R Carlson
|Author:||Michael R Carlson|
|Publisher:||Fortification Press; First Edition edition (2002)|
|Fb2 eBook:||1686 kb|
|ePub eBook:||1334 kb|
|Digital formats:||docx lrf mbr doc|
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Gorgeously presented 12'' x 9'' photo journal of banded agate sites from around the world, with over 260 museum quality color agate photos
Gorgeously presented 12'' x 9'' photo journal of banded agate sites from around the world, with over 260 museum quality color agate photos. Explore the beautiful features of each specimen as well as the collecting histories for each site; full glossary, references and index. 160 pgs. Customers Also Bought. The agate is one of the world's most strikingly beautiful semi-precious gems, and collectors worldwide are drawn to the stone's infinite variety of colorations and banding. This identification guide is comprehensive and easy-to-use. It is illustrated throughout with full-color photographs and includes a worldwide listing of where agates are found.
The Age of Exploration served as a stepping stone for geographic knowledge. It allowed more people to see and study various areas around the world, which increased geographic study, giving us the basis for much of the knowledge we have today. The effects of colonization still persist as well, with many of the world's former colonies still considered the "developing" world and the colonizers the First World countries, holding a majority of the world's wealth and receiving a majority of its annual income.
Chalcedony and agates from a variety of world-wide hosts have been examined using cathodoluminescence (CL)
Chalcedony and agates from a variety of world-wide hosts have been examined using cathodoluminescence (CL). It is proposed that this change is due to a condensation reaction between neighbouring SiÀOH groups eliminating water and forming a strained SiÀOÀSi bond.
Contarini, 1506, depicting the expanding horizons becoming known to European geographers in the Age of Discovery. Courtesy of the trustees of the British Museum; photograph, . Freeman & Co. Ltd. The sea route east by south to Cathay. His motives were mixed.