Fig. 11From: Mineralogical and petrographical studies of agricultural soil, Assiut Governorate, EgyptHeavy fraction composed of opaque’s (black), zircon (zoned colorless euhedral to subhedral grains), staurolite (reddish brown at the lower part), and epidote (pale green angular grains at the upper left corner), heavy fraction, PPL. × 100Back to article page