The remnant materials are highly aluminous and siliceous. It occurs commonly as an alteration product of corundum, andalusite and other aluminous minerals. A new plant for the production of aluminous cement was completed in 2003. Zunyite occurs in highly aluminous shales and hydrothermally altered volcanic rocks. He is aluminous of the Sydenham College, Mumbai. The Mazerolles Schists are aluminous micaschists with interbedded quartzitic layers. Alternative names are "aluminous cement", "high-alumina cement" and "Ciment fondu" in French.