Reservoir Characteristics of the Lower Silurian Longmaxi Shale in Zhaotong Region, Southern China

Table 1

Mineralogy of shale samples from the Zhaotong region.

Sample ID	TOC (%)	(%)	Mineral content (%)							Relative content of clay (%)
			Quartz	K-feldspar	Plagioclase	Calcite	Dolomite	Pyrite	Clay	I/S	I	K	C
ZT1-1	2.15	2.46	12.1	0.8	1.6	29.3	21.2	1.7	33.3	12	73	2	13
ZT1-2	2.56	2.64	11.5	0.7	1.7	19.8	15.4	4.8	46.1	22	64	2	12
ZT1-3	3.31	2.47	37.2	0.6	4.9	19	17.4	2.4	18.5	41	49	1	9
ZT1-4	4.15	2.51	48.3	0.8	0.8	8.7	15.6	3.5	22.3	41	50	1	8
ZT1-5	4.79	2.59	28.9	0.9	4	13	15.8	6	31.4	28	58	2	12
ZT1-6	2.31	1.95	37.9	1.1	9.5	7.4	4.8	4	35.3	26	51	2	21
ZT1-7	3.13	2.02	29.3	1.6	4.2	9.9	5.9	3.2	45.9	23	52	2	23
ZT1-8	1.17	2.42	34.2	1.3	8.1	12.3	4.5	1.3	38.3	26	51	2	21
ZT1-9	1.88	2.49	30.4	3.1	9.3	16.6	5	3.1	32.5	18	54	2	26
ZT1-10	0.91	2.35	37.9	4.6	6.5	12	3.9	0.6	34.5	20	50	2	28
ZT1-11	3.35	3.13	17.9	0.9	2.3	36.5	23.1	2.7	16.6	32	53	2	13
ZT1-12	0.86	2.41	24.3	0.9	6.1	31.4	21.5	0.8	15	32	52	2	14
ZT1-13	3.17	2.59	41.8	0.8	4.6	16.4	14.9	2	19.5	37	52	1	10
ZT1-14	3.47	2.43	35.1	0.7	5.5	13.7	20.1	2.2	22.7	38	50	2	10
ZT1-15	4.16	2.67	30.7	1.1	1.2	12.6	22.7	4.4	27.3	36	51	2	11