leucophane

from The Century Dictionary.

• noun An imperfectly crystallized mineral, of a pale greenish or wine-yellow color. It is a fluosilicate of beryllium, calcium, and sodium, and is found in Norway. Also called leucophanite.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Min.) A mineral of a greenish yellow color; it is a silicate of glucina, lime, and soda with fluorine. Called also leucophanite.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Alternative form of leucophanite.