Halite And gypsum each variety apparent crystals that are very smooth and so are conveniently scratched. Licking a sample will speedily distinguish the two, as halite has a similar composition as desk salt and an exceedingly exclusive ‘salty’ flavor. For many who dislike the concept of licking mineral samples, the https://www.propanraya.com/id/produk/eco-gypsum-ee-4050