Table 7 Analysis of sandstone materials

From: Types and sources of salts causing exfoliation and efflorescence in stone relics at Yongling Mausoleum

Sample ID

WJM-03

WJM-02

WJM-01

State Description

Subangular, angular, subcircular, medium roundness

Grain size range (mm)

0.05–0.10

0.05–0.15

<0.20

Sand grains (Vol.%)

Quartz

70

65

65

Siliceous rock

10

10

10

Feldspar

3

5

5

Magnetite

1

2

2

Mic

1

2

2

Cement (Vol.%)

Carbonate

13

11

11

Silicon mud

2

5

5

Pore type

Carbonate cementation pattern