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XRD patterns of (i): (a) Ca,Mg-Ver and (b) Na-Ver (Ver = vermiculite, Hb = hydrobiotite, Q = quartz, *unidentified phase); (ii): (a) Na-Ver, (b) C14-Ver-100%, and (c) C14-Ver-200%; (iii): (a) Na-Ver, (b) C16-Ver-100%, and (c) C16-Ver-200%; and (iv): (a) Na-Ver, (b) C18-Ver-100%, and (c) C18-Ver-200%.
