Which of these is another form of rock salt?
Correct answer: Halite
I, Claudius
Salt has been used for everything, from food preservation to currency. Nowadays highly essential for de-icing roads in cold temperatures of the north hemisphere.
Coo
I have a specimen of dark blue Halite, it's beautiful.
antzuzu
... only because it was printed on the bag... We used it in the summer to " churn" ice cream