CaH8O15Si4V
Hughes, J. M.Derr, R. S.Cureton, F.Campana, C. F.Druschel, G.
The Canadian Mineralogist (2011) 49, 1267-1272
a=9.7614Å b=13.6666Å c=9.6049Å
α=90° β=90° γ=90°
a=9.7518Å b=13.6854Å c=9.5965Å