 Generally referred to as basaltic, they are classified either as monzonite (the lowest flow) and latite (the upper two flows), or as shoshonite.They contain the minerals augite, plagioclase, and olivine altered to serpentine, with accessory sanidine, orthoclase, apatite, magnetite, and biotite.Both North and South Table Mountain are known for the wide variety of zeolite minerals that occur in vesicles in the second flow.