keilhauite (au as ow)

[Named by Erdmann after Prof. Keilhau of Norway; suff. -ite (Min.).] Min .: A monoclinic mineral, having its angles approximating to those of sphene; usually in twin crystals; cleavage, distinct; hardne , 6.5; specific gravity, 3.51-373; luster, vitreous; color, clove-brown to brownish black, streak grayish-brown; composition, a silico-titanate of alumina, iron, and lime, with traces of glucina, yttria, . Occurs (often in large crystals) at several places near Arendal, Nor way. keils, s . pl . [KAYLES.] keir, s . [Icel. ker =a tub; Dan. kar .] A vat for holding a bleaching liquor. The alkaline vat of a bleachery.