We studied three Antarctic rocks and quartz separates thereof for their records of cosmic-ray produced 21Ne. All three samples reveal an excess of 21Ne and in two of them a cosmic-ray origin is documented by the spallation ratios 22Ne/21Ne. 3He is shown to be incompletely retained in quartz (<10%). Previous studies have shown the suitability of quartz as a monitor for cosmic-ray produced radio-nuclides 10Be and 26Al, and therefore as a tracer for geological processes. 26Al/10Be ratios allow the calculation of minimum exposure ages and maximum erosion rates, and measured ratios 21Ne/10Be and 21Ne/26Al add significant information to exposure histories, especially in the case of a complex exposure. This information is necessary for an evaluation of erosion rates and to define geological processes, such as uplift and variations in the Antarctic ice cover. ¿American Geophysical Union 1991