Fig. 1: Detail of a 18x31-cm portion of a larger slice of iron meteorite that has been sawn, polished and acid-etched to reveal the Widmanstatten pattern id nickel-iron alloys and large crystals of the phosphide mineral schreibersite, swathed in kamacite. One of four large slices cut and prepared from a larger parent slab, itself clearly part of a much larger parent mass. This is Slice 1, 60 x 30 x 1.8cm, 28.0 kg (61.5 lbs).