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Table 2 Mineralogical composition of the tested sandstones by XRD analysis

From: Experimental study on capillary water absorption of sandstones from different grotto heritage sites in China

Sample Content of whole rock minerals (%) Relative content of clay minerals (%)
Quartz Calcite Microcline Hematite Albite Clay S I/S I K C C/S
YG 62 4 7 1 - 27 - 6 15 79 - -
DZ 57 12 4 1 13 13 - 23 17 2 - 58
LS 58 10 4 1 12 15 - 61 34 5 - -
  1. Note: S = smectite, I = illite, K = kaolinite, C = chlorite, I/S = mixed layer of illite/smectite, C/S = mixed layer of chlorite/smectite