K2 (S O4)

K_1.9996O₄S_0.5

van den Berg, A.J.Tuinstra, F.

Acta Crystallographica B (24,1968-38,1982) (1978) 34, 3177-3181

a=5.9Å   b=5.9Å   c=8.11Å

α=90°   β=90°   γ=120°