text: The economic importance of ultrapotassic rocks is wide and varied. Because kimberlites, lamproites and lamprophyres are all produced at depths of 120 km or greater, they are known to be a major source of diamond deposits and thus can bring diamonds to the surface as xenocrysts. Additionally, ultrapotassic granites are a known host for granite-hosted gold mineralization and well as significant porphyry-style mineralization. Ultrapotassic A-type intracontinental granites may also be associated with fluorite and columbite – tantalite mineralization.