Halite And gypsum both equally form apparent crystals that are quite comfortable and they are conveniently scratched. Licking a sample will speedily distinguish the two, as halite has the same composition as table salt and an exceedingly exclusive ‘salty’ taste. For many who dislike the idea of licking mineral samples, https://www.propanraya.com/id/produk/eco-gypsum-ee-4050