Unrefined salt isn’t a good source of any of the minerals that it incidentally might have. Kinda sounds like you’re about to link us to a blog post about how it cures diseases (that also sells unrefined salt).
I am not, but consider that unrefined salt is less worse than the refined stuff, which as I pointed out, does nothing but season food.
You should also consider the inestimable value of salt to the ancient world, and perhaps not merely for its preservative uses. Perhaps salt today is uniformly worse than it was thousands of years ago, because all the really good deposits are tapped out?
Salt is one of the many things that is still trading on its "brand name" and reputation, yet it's been replaced by an impostor.
Table salt does more than season food. It can increase your blood pressure and CVD outcomes, especially in the doses you get from packaged foods and some cuisines. That's something to consider when most of us are dying of heart disease.
I don't buy the claim that unrefined salt is less worse than refined salt because we're talking about minute amounts of nutrients. You get the nutrients from the food you eat, not the salt you put on it. Do the math and show me otherwise.