K6 pipe is a diamondiferous diatreme in the Buffalo Head Hills kimberlite field of Northern Alberta, Canada. It is thought to have formed about 85 million years ago when this part of Alberta was volcanically active during the Late Cretaceous period.Emplacement characteristics of Late Cretaceous and Paleocene pyroclastic and injected kimberlites in northern Alberta, Canada It is typical of melts that originated from the lower mantle.Alberta Geological Survey: Radiogenic Isotope Geochemistry of Kimberlitic Rocks in Northern Alberta: Constraints for Source of Magmatism and Emplacement Age
See also List of volcanoes in Canada Volcanism of Western Canada
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