Depending on the species, some molds (or actually species that exhibit both fungal and mold characteristics) can be quite salt tolerant, if it's a portion left in the air for any time. The very essence of some washed cheeses and rind-ripened cheeses, actually.
Was the mold long and thread-like, scaly, or a kind of chalky, powdery, low-lying mold?
Edit: Should also have said, cured meats - geotrichum candidum and related coat both sausages and many cheese styles.