This book examines and summarizes data on more than 40,000 diamonds from deposits in Russia's diamondiferous Arkhangelsk province.

The geological data of diamond deposits includes the geological setting, ore body morphology and mineral composition. Investigation techniques employed include: Color Cathode Luminescence, Fourier Transform Infrared Spectroscopy, Electron Paramagnetic Resonance, Raman Spectroscopy, and Carbon Isotopy. The book provides a full description of the diamond morphology.

The problems of a potential (mantle) diamond grade for deposits are considered, depending on the physical and chemical conditions involved in the genesis and growth of diamond crystals. Further, there can be a significant impact on the productivity of bodies and the properties of diamonds during post-crystallization metasomatic processes.

In this book, the authors propose a diamond crystallization model for changes in diamond crystals within mantle metasomatic transformations, and identify the factors affecting the growth and dissolution of diamonds in the mantle. In addition, they describe the complex evolution of kimberlite from the mantle up to the Earth's surface. All of these factors affect the quality and quantity of diamonds in a particular diamond deposit, providing the basis for identifying optimal technological mining processes.

Inhalt

Introduction.- Geological Summary of Kimberlites and Related Rocks in the Archangelsk Diamondiferous Region (ADR).- Typomorphism of Diamond From Deposits Of The Arkhangelsk Diamondiferous Region.- Defect-Impurity Composition, Optical and Spectrometric Properties of Diamond from ADR Deposits.- Recent Data on Diamond from the M.V. Lomonosov Deposit.- Constitutional Characteristics and Patterns of Diamond Formation in the ADR.- Method of Morphogenetic Studies of Diamond and Associated Indicator Minerals, Its Application to Solve the Problems of Typing Search Halos and Evaluation of the Degree of Diamondiferous Kimberlite Rocks Archangelsk Diamondiferous Region.- Geological Conditions of Formation, and Typing Search Halos and Alluvial Deposits from Unidentified Primary Sources Within the Eastern-European Platform and its Framing.- Afterword