Fig. 2: Representative thin-section images of the starting materials and the distribution of lithium between minerals.
From: Experimental constraints on the sources of lithium-rich granites and pegmatites

a FM1 micaschist. b ST19.03 micaschist. c Barr888 metabauxite. Bt = biotite, Grt = garnet, Ilm = ilmenite, Ky = kyanite, Mrg = margarite, Ms = muscovite, Pl = plagioclase, Prl = pyrophyllite, Qz = quartz, Rt = rutile, St = staurolite.