leptynite Min.
(ˈlɛptɪnaɪt)
Also leptinite.
[app. f. Gr. λεπτύν-ειν (see next) + -ite.]
The same as granulite.
| 18.. Dana (Worc.), Leptynite. 1879 Rutley Stud. Rocks xii. 211 Granulite (Weiss-stein or leptinite) is also composed of felspar and quartz, the felspar being orthoclase. |