Seriously guessing this depends on what your fact is actually recording..... But assuming sales (when in reality, it's just as likely mining equipment moving round an opencut mine), then the count/volume of the Long/Lat wouldn't be any higher being in the dim than in the fact. Personaly, I'd go with the dim. To me, it's like saying we have 1MM clients, so thats a lot of phone numbers, so put them in the fact. They still belong in the dim 🙂