Amorphous molybdenum oxosulfide precipitation in the acetone-water mixed solvent leads to the variety of original morphologies, including entangled tubules, hollow spheres, and sponge-like fractal structures. The dominating type of morphology obtained can be controlled by the variations of the amount of different electrolytes present in the reaction mixture, such as NH4SCN, KCl, (NH4)(2)SO4, or (NH2OH2)HSO4. The qualitative analogy between the observed behavior and vesiculation of lipids is discussed.