Definify.com

Webster 1913 Edition

(lū̍-kŏks′ēn)

Noun.

[

Leuco-

+ Gr.

ξένοσ

stranger.]

(Min.)

A nearly opaque white mineral, in part identical with titanite, observed in some igneous rocks as the result of the alteration of titanic iron.

See also: leucoxène

leucoxene ‎(usually uncountable, plural leucoxenes)

(mineralogy) A mineral, mostly composed of rutile, occurring in igneous rocks, often by alteration of ilmenite or other titanium minerals