Fig. 1. XRD patterns for the rock and soil samples ((A) <150 μm, (B) <2 μm). XRD revealed quartz (d = 4.25 and 3.34), feldspar (d = 3.76, 3.22, 2.98, and 2.90), and kaolinite (d = 7.15 and 3.55) as the possible main mineral constituents, while illite (d = 9.94 and 4.25) and montmorillonite (d = 15.29) were revealed as the possible minor mineral constituents in the rock and soil samples. Letter designations: Q, quartz; F, K-feldspar; K, kaolinite; I, illite; M, montmorillonite.
