The results of this pilot study show that using a commercial Merchantek 266 nm Nd:YAG laser system, laser ablation -inductively coupled plasma - mass spectrometric analysis of fluid inclusions in quartz is possible. Fifteen elements (Li, Na, K, Mg, Fe, As, Rb, Sr, Sn, Ba, Mo, U, W, Mn, and Pb) were determined for aqueous fluid inclusions from the Zinnwald Sn deposit (Ore Mountains, Germany). The concentrations of the measured major and trace elements are in good agreement with literature data for the same location. A first evaluation of the data shows that the high temperature inclusions (Th: 400 - 370 °C) contain high Fe and Na concentrations as well as Sn contents typical of tin-bearing fluids. A decrease in salinity from the high temperature fluid inclusions to low temperature secondary inclusions probably reflects a dilution trend of the magmatic fluid by external fluids.