The Collaborative International Dictionary of English v.0.48:
Marlite \Marl"ite\, n. [Cf. F. marlite. See Marl, n.] (Min.) A variety of marl. [1913 Webster]WordNet (r) 3.0 (2006):
marlite n 1: metamorphic rock with approximately the same composition as marl [syn: marlite, marlstone]