The copper hydroxychloride mineral clinoatacamite, Cu2Cl(OH)3, has been discussed in the literature as frustrated quantum magnet and has been reported to show in thermodynamic measurements an unusual behavior in applied fields. Recently, we have studied the symmetry of the magnetic ground state of clinoatacamite at the flat-cone diffractometer E2 at the Helmholtz-Zentrum Berlin using a single-crystalline sample. We found during this experiment magnetic reflections below 6.5 K in accordance with a previous study on deuterated clinoatacamite powder. Further, by means of susceptibility measurements in fields up to 5 T, we have found for single-crystalline clinoatacamite an even more complex magnetic phase diagram than reported so far. We would therefore like to study the magnetic ordered phases in applied field my means of elastic neutron diffraction.