Lombaardite was first described from the Zaaiplaats Tin Mine, Central Transvaal by H.J. Nel, C.A. Strauss and Frans E. Wickman in 1949 (Nel, Strauss and Wickman 1949). These authors describe lombaardite as a hydrous calcium-aluminium-silicate with the following formula: Ca10Fe5Al27Si18O89(OH) 5 .
Lombaardite, a rare earth silicate, identical with, or very closely related to allanite.