Fig. 12From: Mineralogical and petrographical studies of agricultural soil, Assiut Governorate, EgyptHeavy fraction composed of opaque’s (isotropic), zircon (exhibits zoning and green, yellow, or violet interference colors), staurolite (exhibits golden yellow interference colors at the lower part), and epidote (exhibits yellow interference colors at the upper left corner), heavy fraction, C.N. × 100Back to article page