Trihydrogen dodecatungstophosphate hydrate(29)

H₆₁O₆₉PW₁₂

Bradley, J AIllingworth, J W

Proceedings of the Royal Society of London, Series A: Mathematical and Physical Sciences (76,1906-) (1936) 157, 113-131

a=23.28Å   b=23.28Å   c=23.28Å

α=90°   β=90°   γ=90°