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Just to let you know the black bit can be taken off and you should be able to take out the broken bit worked as a wrecker.
you can also take the barrel out and use graphite powder to lube it up.
thank you for this conversation, I am guessing that this is a regular problem with these cars. My ignition seems to have gotten worse and worse recently, until today when it simply will not turn at all. I will call for a locksmith tomorrow after work and hope that it does not cost too much. If worse comes to worse, I will purchase a new barrel and keys from Trademe for $65 (just keys - not electronic keys). thanks again.