Zirkelite is an oxide mineral with the chemical formula (Ca,Th,Ce)Zr(Ti,Nb)2O7.

It occurs as well-formed fine sized isometric crystals.

It is a black, brown or yellow mineral with a hardness of 5.5 and a specific gravity of 4.7.

Initial discovery was from the Jacupiranga carbonatite, São Paulo, Brazil.

This article about a specific mineral or mineraloid is a stub.