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Quicklook shows an apple logo and not my picture.

You only have 1 file in there? I have an image for each person I have listed in my addressbook. By default you should be listed in your own addressbook with your image attached. If not then I don't know where your profile picture is stored.
 
stored in address book but retrieved by opening address book

"It is part of the addressbook.

So it's in ~/Library/Application Support/AddressBook/Images/ "

The pictures should be stored in this location but I was not able to retrieve mine. One quick work around was to open address book itself, go to my "card", click and drag on the pic and drop to a safe location. Repeat for each account picture you want/need to retrieve.
Cheers!
ECC
 
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