coal sample location

sample numbers

d₀₀₂/nm

graphitization degree

Rh (1)/%

Rh (2)/%

Rh/%

Hanpo’ao syncline, Xinhua, Hunan

SJ3

3.3646

0.877

10.297

19.494

14.895

BC5-1

3.3873

0.614

20.497

35.029

27.763

BC5-2

3.3897

0.585

21.622

36.671

29.146

BC3-4

3.3896

0.586

21.583

36.602

29.093

SHL3-2

3.3846

0.644

19.334

33.181

26.257

Tianlongshan, hunan

TLS

3.372

0.5719

22.13

24.56

23.34

Nanshu, Shandong

SY117-9

3.358

0.8549

11.15

14.98

13.07

NSG

3.366

0.6708

18.29

20.45

19.37