Ca (H P O4) (H2 O)2

CaH₅O₆P

Sainz-Diaz, C.I.Villacampa, A.Otalora, F.

American Mineralogist (2004) 89, 307-313

a=6.41Å   b=15.18Å   c=5.86Å

α=90°   β=119.2°   γ=90°