[7] Mistastin crater, aka Kamestastin,[7] is located in northwestern inland Labrador, due west of Natuashish, near the Quebec border.

[7] Mistastin crater was created 36 million years ago by a violent asteroid impact.

[9] The presence of cubic zirconia around the crater rim suggests that the impact generated temperatures in excess of 2,370 °C (4,300 °F) — roughly 43% that of the surface of the Sun and the highest crustal temperatures known on Earth[9]  — and produced global changes that lasted for decades after the impact.

The target rocks were part of a batholith composed of adamellite, mangerite and lenses of anorthosite.

Planar deformation features, diaplectic glass, melt rocks, and shatter cones have been identified.