Inelastic and elasticJ/? (3097) photoproduction on Li6 are measured at a mean ? energy of 90 GeV in an open spectrometer. TheJ/? are identified by their decays intoµ+µ- ore+e-. A signal of ?'(3685) intoµ+µ- andJ/?p+p- is also seen. The inelastic cross-section withZ=E?/E?<0.9 is compared in shape and magnitude with the colour singlet model of photon-gluon fusion.