æschynite

[In Ger. œchynit; Gr. αἰσχύνη ( aischuně ) = shame, dishonour. So named by Berzelius, who felt put to the blush because chemical science was not sufficiently far advanced at the time of the discovery of the mineral to separate two of its di imilar constituents, titanic acid and zirconia.] A mineral cla ed by Dana with his "Oxygen Compounds-Tantalates Columbates." Its crystals are orthorhombic, generally long serrated prisms, H 5-6, C49-5-23. Lustre, resinous; colour, nearly black when opaque, brownish yellow when translucent. Composition: columbic and titanic acids, together about 51:45, protoxide of cerium 1849, thoria 15.75, with other ingredients in smaller quantity. From Minsk and Orenburg, in Ku ia.