. 2022 Apr 20;7(17):14591–14610. doi: 10.1021/acsomega.1c06763

Table 2. Mineral Composition of Longmaxi Deep Shale in the LZ Area^a.

sample number	depth (m)	porosity (%)	permeability (10 ^–3μm²)	TOC (%)	Ro (%)	quartz	plagioclase	carbonate	pyrite	clay minerals
U3	3894.46	2.82	0.009	0.48	2.63	38	8	0	0	52
U24	3916.33	4.05	0.026	0.62	2.66	41	9	0	0	47
U35	3927.20	3.27	0.026	0.61	2.75	39	9	3	0	45
U37	3929.30	2.09	0.030	0.49	2.77	42	8	0	0	47
L4	3976.71	4.62	0.008	2.02	2.80	26	7	25	2	40
L52	3994.76	5.49	0.014	2.70	3.05	53	5	8	5	29
L53	4024.85	6.24	0.008	3.55	3.05	52	3	12	5	28
L60	4025.83	5.23	0.008	4.97	3.11	60	2	31	2	5

U—Shale samples from the Upper Longmaxi formation; L—shale samples from the Lower Longmaxi Formation.

Table 2. Mineral Composition of Longmaxi Deep Shale in the LZ Areaa.