Iron-NickelSikhote-Alin, Siberia, RussiaWeighing over one pound, this Sikhote-Alin meteorite is a splendid representative of the shrapnel type, boasting sharp edges, signs of melting around the edges and parallel flow lines from melting metal caused by high temperatures as it coursed through Earth's atmosphere. Parallel flow lines are seldom found on iron-nickel meteorites that fell hundreds or thousands of years ago due to rusting on the Earth's surface. On February 12, 1947, a series of loud explosions over the Sikhote-Alin mountain range in Siberia announced the arrival of the most recent large iron-nickel meteorite to strike the Earth. These meteorites are the best preserved of all the known major falls. Sikhote-Alin's large meteorite body broke up twice during its fall to Earth; the higher breakup produced the meteorites with regmaglypts, the lower breakup created the shrapnel type meteorites. Weighing approximately 481.5 grams (1.06 lbs) and measuring 3 x 2 ¾ x 1in