Tourmaline: Fascinating Crystals with Fantastic Inner Worlds / Turmalin: Faszinierende Kristalle mit Phantastischen Innenwelten

About this book

Language: Bilingual in English and German

Tourmaline crystals are not only much sought after gemstones but also are highly interesting as study objects, because on them the formative forces in the mineral kingdom create an impressive richness of shapes and colors. Especially the research of the inner of dark or even black crystals is very exciting. When slices of such crystals are ground thinner, beautiful fine structures appear out of the dark. This is the way in which fantastic and detailed picture worlds have been discovered; they are presented in this book as TourmalineArt and put into a natural scientific framework, but which is generally understandable.

The author has been dealing for more than 20 years with the aesthetics of the color pattern and their mineralogical interpretation; he put together the very best and most interesting of thousands of crystals in this book. The fantastic photos of the hidden structures within tourmalines make this book a feast for the eyes also for the lay public.

Contents

Preface     6
Introduction     10
The Structure of Tourmalines     26
The Colour Palette of the Tourmalines     32
The Growth of Tourmaline Crystals     48
The Structures of Crystal Forms     58
Rim Structures     68
Delta Structures     82
Trigonal Dislocations     132
Division into Parallel Aggregates     140
The Healing of Broken Tourmalines     158
Naturally Corroded Tourmaline Crystals     194
Healing of Corroded Tourmalines     210
Healed Corrosion of Cavities     240
References     271

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Biography

Paul Rustemeyer, born in 1952, is chemist. He has enjoyed very much collecting and photographing minerals since his youth. For 40 years he has been passing on mineralogical knowledge in presentations and publications to interested people. He has been working intensively on a multitude of growth phenomena of common minerals. In 2003, his book Faszination Turmalin was published and since then his exhibition “The Enchanting Magic of Dark Tourmaline Crystals” has been shown in many European natural history museums.