http://www.lpi.usra.edu/meetings/metsoc97/pdf/5061.pdf Weathering-Induced Re-crystallisation of Kamacite, Grokhovsky, V.A. 60th Annual Meteoritical Society Meeting] It weighed 58 kilograms and was classified by the Natural History Museum as a medium Octahedrite, Natural History Museum Catlogue containing (mineral composition determined by X-ray spectral microanalysis): 9.25% nickel, 0.42% cobalt, and 0.30% phosphorus. [