Fig. 7From: Geochemical dispersion of gold-bearing quartz veins in the Wadi Abu Khusheiba area in Southern JordanTotal alkali silica (TAS) diagram in wt. %, as shown by Bas et al. [5] and formalized by Le Maitre [22], the blue curved line between the alkaline and subalkaline series is that of Irvine and Baragar [15]Back to article page