AM_Apatite-(CaOH)_20
Formula: Ca5 P3 O13 H
Name: Apatite-(CaOH)
Unit cell: 9.4212 9.4212 6.8927 90.0 90.0 120.0 , V=529.82
Space group: P63/M (176)

Lee Y J , Stephens P W , Tang Y , Li W , Phillips B L , Parise J B , Reeder R J , American Mineralogist , 94 (2009) p.666-675, Arsenate substitution in hydroxylapatite: Structural characterization of the, Ca5(PxAs1-xO4)3OH solid solution, Sample: As0, Locality: synthetic