Compositions of SrxBi4-xO4Se1-xCl2+x for x = 0, 0.25, 0.5, 0.75, 0.95, 0.99 were synthesized via a stochiometric combination of Bi2O3, Bi, Se, BiOCl and SrBiO2Cl. Powders were ground in a mortar in pestle, then sealed in an evacuated quartz ampoule at pressures < 1 x 10 -2 torr. The ampoules were heated at 700 °C for 12 h in a muffle furnace, then brought to room temperature at 5°C/min. The x = 1.0 sample (SrBi3O4Cl3) was synthesized through a stochiometric combination of SrBiO2Cl and BiOCl, ground in a mortar and pestle and heated in an alumina crucible in air at 700 °C. CaBi3O4Cl3 was synthesized through a stochiometric combination of CaBiO2Cl and BiOCl, ground in a mortar and pestle and heated in an alumina crucible in air at 700 °C. The SrBiO2Cl precursor was synthesized from a stochiometric mixture of SrCO3 and BiOCl, which were ground together in a mortar and pestle, placed in an alumina crucible, and heated in air at 800 °C for 12 h followed by a second identical grinding and heating step. The CaBiO2Cl precursor was synthesized from a stochiometric mixture of CaCO3 and BiOCl, which were ground together in a mortar and pestle, placed in an alumina crucible, and heated in air at 800 °C for 12 h followed by a two more identical grinding and heating steps.