CO2 percolation experiment through chlorite/zeolite-rich sandstone (Pretty Hill Formation - Otway Basin-Australia)

► We realized CO2-rich brine percolation experiments at in situ condition through sandstone samples. ► Zeolite/chlorite rich sandstone is a good rock formation for CO2 storage as mineral phases. ► CO2 is sequestrated as carbonate and reduce carbon. ► Kaolinite precipitates as secondary mineral during CO2 rich-brine interactions. ► The precipitated minerals reduce strongly the permeability of the rock sample.