Table 2: Averaged values of XRD reflection locations appearing more than once (a) Un-aged extraction residue, (b) After 1-week exposure to air.

(a) Consistent 20.78 27.93 32.34 34.91 36.64 42.56 51.03 57.72 59.53 66.22 70.97
(b) Retained after aging 20.75 27.95 36.68 40.21 42.73 45.63 51.09 57.74 59.22 66.42 70.88 74.3