Halite and gypsum equally kind apparent crystals that are incredibly smooth and are easily scratched. Licking a sample will rapidly distinguish the two, as halite has a similar composition as desk salt and an exceedingly distinctive ‘salty’ style. For people who dislike the thought of licking mineral samples, The 2 https://www.propanraya.com/id/produk/eco-gypsum-ee-4050