Tiptopite

Be₃Ca_0.36H_7.26KLi_1.44Na_0.84O_15.01P₃

Peacor D RRouse R CAhn J-H

American Mineralogist (1987) 72, 816-820

a=11.655Å   b=11.655Å   c=4.692Å

α=90°   β=90°   γ=120°