Figure 11. Cathodoluminescence (CL) images of typical zircons from the quartz monzodiorite (Tam 1b). Note the thick oscillatory growth and sector zonation (typical of magmatic growth) and thin external zone due to metamorphic growth.

From

Paleoproterozoic Synkinematic Magnesian High-K Magmatism from the Tamkoro-Bossangoa Massif, along the Bossangoa-Bossembele Shear Zone in North-Western Central African Republic

P.E.Y. Danguene, T. Ngnotue, S. Ganno, J. Biandja, B. Kankeu, J.P. Nzenti

Journal of Geosciences and Geomatics. 2014, 2(4), 151-164 doi:10.12691/jgg-2-4-3