The impact origin of carbonado

Genesis the mysterious crypto-crystalline diamond aggregates (carbonado) spread exclusively in ancient and modern fields of Brazil and the Central Africa is discussed. It is shown that (1) source of carbon in carbonado, judging by its isotope structure, equally could be terrestrial or space. (2) parameters of carbonado crystallization surpass those that exist in lithosphere mantle of the Earth, and are close to conditions of carbon liquidus in known Р-Т diagrams of phase condition of carbon. (3) absolute age of diamondite matrix and "zero" degree of aggregation of nitrogen in diamond crystallites excludes any long residence of carbonado in terrestrial mantle. (4) Carbonado is the most ancient crypto-crystalline rock "diamondite", originating from carbon fusion of impact origin.