Mazzi F , Galli E , Neues Jahrbuch fur Mineralogie, Monatshefte , 1983 (1983) p.461-480, The tetrahedral framework of chabazite, Locality: Richmond, Melbourne, Victoria, Australia, Note: Occupancies invented to match formula and refinement, Note: This structure matches the reported bond lengths for C 4b, not C 4a, Sample: C 4a, triclinic refinement