Marco Campos-Venuti: Banded Agates a genetic approach
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Author:  Barbra Voltaire, FGG [ Mon Feb 25, 2019 10:08 pm ]
Post subject:  Marco Campos-Venuti: Banded Agates a genetic approach

Banded Agates: a genetic approach
by Marco Campos-Venuti (2018)
in English
200 pages, +400 pictures, +40 diagrams
This book highlights the complexity of the formation of banded agates and the wide variety of different banding systems. A model for the genesis of banded agates is proposed explaining the basic concentric banding and all the variation as horizontal and convolute banding. Chemical processes at the base of Chalcedony deposition are described with simple words and associated to the structures commonly found in natural collectable stones. The book includes many different diagrams showing the formation of the most important structures found in banded agates, as connective channels and stalactites. The interaction with microbial fauna has been proposed for explain a wide group of agate and many characteristic structures.

The author born in 1965. He has a PhD in volcanology, has been editor of the Rivista Gemmologica Italiana for 7 years and is author of numerous scientific publications. Since his childhood he is a passionate collector of stones, and was always curious to investigate their origin. He has an important collection of agates and jaspers and has written innumerable scientific papers.

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