Halite And gypsum the two form apparent crystals that are very soft and therefore are simply scratched. Licking a sample will swiftly distinguish The 2, as halite has the same composition as table salt and a really distinctive ‘salty’ flavor. For people who dislike the concept of licking mineral samples, https://www.propanraya.com/id/produk/eco-gypsum-ee-4050
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