Applications of Vitrinite Anisotropy in the Tectonics: A Case Study of Huaibei Coalfield, Southern North China

Table 2

The vitrinite reflectance anisotropy of non-oriented samples, Huaibei coalfield.

Coal mine	Sample number	Coal seam	𝑅max	𝑅min	𝐵𝑤	𝐵𝑤/𝑅max	𝑅max/𝑅min
Linhuan	LH10	9	1.37	1.24	0.13	0.09	1.10
Shitai	ST04	3	1.44	1.29	0.15	0.10	1.12
Taoyuan	TY01	7	1.02	0.9	0.12	0.12	1.13
Taoyuan	TY02	10	1.00	0.91	0.09	0.09	1.10
Taoyuan	TY03	10	1.14	1.02	0.12	0.11	1.12
Taoyuan	TY04	7	1.06	0.95	0.11	0.10	1.12
Taoyuan	TY05	3	0.87	0.79	0.08	0.09	1.10
Qidong	QD01	9	1.09	0.97	0.12	0.11	1.12
Qidong	QD02	7	0.94	0.87	0.07	0.07	1.08
Qidong	QD03	9	0.89	0.77	0.12	0.13	1.16
Qidong	QD04	10	0.98	0.88	0.10	0.10	1.11

Abbreviations: 𝑅_max: maximum reflectance; 𝑅_int: intermediate reflectance; 𝑅_min: minimum reflectance; 𝐵_𝑤: bireflectance, 𝑅_max−𝑅_min.