Diamond and other accessory minerals in the products of the 2008-2009 phreatic eruption of Koryaksky volcano, Kamchatka

The paper provides new data related to the accessory minerals found in ashes from phreatic eruption of Klyuchevskoy volcano in 2008-2009. We characterized form of extraction, composition and specific features of garnet, corundum, deltalumine, muassonite, sulfide thallium, native metal and carbon phases including micro-diamond, and also likely abiogenic condensed organic compound. A feature of the Koryak diamonds is a very small size and a cubic habit, which may indicate their crystallization from the gas phase under conditions of significant super saturation along the carbon. The detection of various particles and filaments of condensed organic compounds in the form and color in the ash of the Koryak volcano confirms the previous conclusion about systematic inorganic synthesis of highly organized prebiological forms of organic matter in modern volcanoes.