Halite And gypsum the two type clear crystals that are very tender and are simply scratched. Licking a sample will speedily distinguish The 2, as halite has exactly the same composition as desk salt and an exceptionally distinctive ‘salty’ taste. For individuals who dislike the concept of licking mineral samples, https://www.propanraya.com/id/produk/eco-gypsum-ee-4050
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