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Figure 3.07B. Ice line added. Halite-saturated compositions for mixtures of water and halite (NaCl) are shown as a dashed halite-saturation line on a graph of weight percent NaCl vs. Temperature. The halite-saturation line separates the mixtures (on the right) that are saturated with halite (halite is present that will not dissolve) from the mixtures (on the left) that are not saturated with halite (no halite is present). Also shown is a dashed ""ice line." Below the "ice line," ice will be present in the brines at equilibrium.