I surmise densities of halite being over 20.00% would strongly indicate a salt dome, but I've only found 4.00%-6.00%. When I mine those, the amount is so insignificant by comparison. Like, a 3x5x6 blob at best. Why is there such a vast difference? One sets you for life, the other you could just buy from a trader in 15 minutes of travel.
Just want the experience of finding a salt dome for the first time. I never need any amount of ore, crystal, or powder ever again as a result of 30 hours of searching and mining. Not a complete waste.