Fig. 1
From: Phosphogypsum waste as additives to lime stabilization of bentonite
XRD spectra of raw bentonite, lime, phosphorgypsum and the main mixtures. Cal: Calcite; Fks: K-Feldspar; Pl: Plagioclase; G: Gypsum; Mt: Montmorillonite; I-Sm: Illite-smectite mixed layers; St: Strätlingite; P: Portlandite