Table 1 Mineral compositions (wt.%) of the sandstones determined by XRD

From: Crystallization characteristic of sandstone under capillary salt weathering test using different salt property and temperature

Sample

Quartz

Feldspar

Calcite

Illite-Smectite mixed layer

Illite

Chlorite

NS

69.2

21.4

4.9

2.6

1.3

0.6

GS*

63.7

17.6

10.0

7.7

0.7

0.4

  1. GS* was a fresh sandstone sample in the Nankan Grotto44.
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