Min. [Named, 1875, after Prof. Kopp of Heidelberg: see -ITE.] Columbate of calcium, sodium, and the cerium metals, found in transparent brown crystals.
1880. Dana, Min., App. ii. 32. Koppite … occurs with apatite and magnoferrite in a granular limestone near Schelingen, Kaiserstuhlgebirge, Baden.
