Evaporite minerals are those that form by coming out of solution when seawater and the waters of large lakes evaporate. Rocks made of evaporite minerals are sedimentary rocks called evaporites. Halides are chemical compounds that involve the halogen (salt-forming) elements fluorine and chlorine. (The heavier halogens, bromine and iodine, make quite rare and insignificant minerals.) It's convenient to put all these together in this gallery because they tend to occur together in nature. Of the assortment in this gallery, the halides include halite, fluorite and sylvite. The other evaporite minerals here are either borates (borax and ulexite) or sulfates (gypsum).
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 Borax |  Fluorite |  Gypsum |  Halite |
 Sylvite |  Ulexite |
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