C2H2Cu3O8
Belokoneva, E. L.Gubina, Y. K.Forsyth, J. B.
Physics and Chemistry of Minerals (2001) 28, 498-507
a=5.011Å b=5.850Å c=10.353Å
α=90° β=92.41° γ=90°
CuH2O4Si
Belokoneva, E. L.Gubina, Y. K.Forsyth, J. B.Brown, P. J.
Physics and Chemistry of Minerals (2002) 29, 430-438
a=8.819Å b=8.819Å c=8.819Å
α=111.7° β=111.7° γ=111.7°