A remnant of an interplanetary impact, this impactite is fallback breccia and melt glass, part of the upheaval and melting of the Earth from a meteorite impact and its re-solidification. This is terrestrial material, altered by the impact of a meteorite, as compared to the extra-terrestrial nature of a meteorite or asteroid.  Polished on one side to highlight details. Hwy Rt. 144N, near Dowling, Sudbury District, Ontario, Canada. 4" x 6.5" x .125", 6.1 oz.