A systematic experimental shock study of calcite, gypsum, and quartz powders mixed 1:1:1 was carried out in order to calibrate shock pressures in naturally shocked carbonates and sulfates to shock effects in quartz. Shock recovery experiments were performed by the multiple reverberation technique at pressures between 9.9 and 47.1 GPa. Shock effects were analyzed petrographically and by electron microprobe analysis. Gypsum is rapidly and efficiently disaggregated at modest pressures (~24.3 GPa). Calcite is surprisingly stable and retains its characteristic high birefringence at pressures as high as 47 GPa. Modest evidence for melting is observed in the sulfate-dominated matrix of the...