AM_Jerrygibbsite
Formula: Mn9 Si4 O18 H2
Name: Jerrygibbsite
Unit cell: 4.875 10.709 28.18 90.0 90.0 90.0 , V=1471.18
Space group: PBN21 (33)

Kato T , Ito Y , Hashimoto N , Neues Jahrbuch fur Mineralogie, Monatshefte , 1989 (1989) p.410-430, The crystal structures of sonolite and jerrygibbsite, Locality: Franklin, New Jersey, Note: O12 z-coordinate changed to reproduce reported bond lengths