But, Dog-Bone (216 Kleopatra) probably is. Only a small fraction of the total population of asteriods are thought to be composed of Nickel-iron. But since there are so many asteriods, the total amount of this highly concentrated Nickel-iron ore, represents far more iron [and precious metals] which has ever mined here on Earth. [btw, the large nickel mine in Canada could have been have been the result from a large nickel-iron impactor]
More here:
http://neo.jpl.nasa.gov/news/news101.html
http://antwrp.gsfc.nasa.gov/apod/ap000510.html
http://www.cnn.com/2000/TECH/space/05/05/kleopatra/
Canadian mine:
http://www.mbendi.co.za/indy/ming/nkcb/am/cn/p0005.htm
http://esci.unco.edu/faculty/morrow/TOC%20Course/Sudbury_talk_abs.htm
More:
http://www1.tpgi.com.au/users/tps-seti/reading.html
Space/Science » in reply to I thought Eros was nickel-iron...
Unlikely Eros is nickel-iron...