Collinsite

Ca₂H₄MgO₁₀P₂

Brotherton, P. D.Maslen, E. N.Pryce, M. W.White, A. H.

Australian Journal of Chemistry (1974) 27, 653-656

a=5.7344Å   b=6.780Å   c=5.4413Å

α=97.29°   β=108.56°   γ=107.28°