Data Set of Major Element of Red Sandstone Tafoni Samples in Danxiashan

During the experiment, about 0.05g of powder sample was placed in a PTFE container, and 0.6 ml HF and 3 ml HNO3 were added. Then the sealed container was placed in an electric furnace and heated to 185 ° C for about 36h.

After cooling, heat the container on the hot plate and allow it to evaporate to dryness, then add 200 ng Rh as the internal standard, then add 2 ml HNO3 and 4 ml water. Seal the container again and place it in an electric furnace at 135 ° C for about 5h to dissolve the residue. After cooling, it is measured by ICP-OES with dilution factor of 1000.