Min. [ad. Sw. tapiolit (A. E. Nordenskiöld, 1863); named after Tapio, a Finnish deity: see -LITE.] Columbo-tantalate of iron, resembling tantalite, bat containing no manganese (Chester).
1868. Dana, Min. (ed. 5), 518. Tapiolite occurs near the Kulmala farm, in the village of Sukula, in the parish of Tammela, Finland.