Fig. 17

ESEM images of zircon (a–c assigned to clusters No. 1, 2, and 3, respectively), pyrolusite (d assigned to cluster No. 3), and fluorite (e assigned to cluster No. 3).

ESEM images of zircon (a–c assigned to clusters No. 1, 2, and 3, respectively), pyrolusite (d assigned to cluster No. 3), and fluorite (e assigned to cluster No. 3).