That's tough man. Sorry to hear that.
I did a bit of googling and found that the fan size is 90 mm -ish. Not standard. See if you can find some cheap 1060 stock cooler as spare on ebay or on your local shopping sites. If you don't find any, then I guess your best bet would be get one of those expensive GPU coolers and even then they might not fit it, as they are usually made for the reference graphics cards. But, lets keep this discussion open and see if anybody else has a better idea.