From The Collaborative International Dictionary of English v.0.48 :
Halite \Ha"lite\ (h[=a]"l[imac]t or h[a^]l"[imac]t), n. [Gr.
"a`ls salt.] (Min.)
Native salt; sodium chloride.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
halite
n 1: naturally occurring crystalline sodium chloride [syn:
halite, rock salt]