Micropore Characteristics and Gas-Bearing Characteristics of Marine-Continental Transitional Shale Reservoirs in the East Margin of Ordos Basin

Table 2

Mineral composition content of shale gas reservoir in the Lower Shihezi group to the Taiyuan group of well Y1.

Sample No.	Mineral content/%
	Quartz	Plagioclase	Pyrite	Sphalerite	Plaster	Total clay
Y1-8	33.0					67.0
Y1-9	64.1	3.1				32.8
Y1-16	23.3					76.7
Y1-18	38.6					61.4
Y1-36	46.5		3.8			49.7
Y1-42	28.8		2.4	11.0		57.8
Y1-44					29.6	70.4
Y1-47	56.7					43.3