Leucophane \Leu"co*phane\ (l[=u]"k[-o]*f[=a]n), n. [Gr.
leykofanh`s appearing bright or white; leyko`s white +
fai`nein to show: cf. G. leukophan.] (Min.)
A mineral of a greenish yellow color; it is a silicate of
glucina, lime, and soda with fluorine. Called also
{leucophanite}.
[1913 Webster]