Magmatic hydrothermal fluid genesis of zeolite in the Paleogene Kongdian Formation of Zaoyuan oilfield, Bohai Bay Basin, China

HAN Guomeng,WANG Li,XIAO Dunqing,LOU Da,XU Muyue,ZHAO Yonggang,PEI Yanlu,GUO Xiaowen,TENG Jiancheng,HAN Yuanjia

Table 1 Results of electron microprobe analysis.

Point No.	Mass fraction/%															Total/ %	Mineral
Point No.	Al₂O₃	SiO₂	K₂O	CaO	FeO	BaO	Na₂O	MgO	MnO	SrO	SO₂	Cr₂O₃	CuO	TiO₂	P₂O₅	Total/ %	Mineral
1.1	7.38	44.83	0.15	2.09	11.26	0.02	0.10	17.42	0.18	0	0	0	0	0	0	83.43	Chlorite
1.2	7.49	45.48	0.20	2.01	10.85	0.10	0.11	17.74	0.23	0	0.06	0	0	0	0	84.26	Chlorite
1.3	0.05	0.03	0.04	0.02	0.04	65.81	0.18	0	0	0	33.42	0	0	0	0	99.59	Barite
1.4	0.07	0	0.05	0.01	0.01	61.59	0.20	0.01	0.08	0	36.42	0	0	0	0	98.43	Barite
1.5	26.54	49.83	0.06	0.01	0	0	13.99	0.01	0	0	0	0	0	0	0	90.44	Natrolite
1.6	26.34	48.90	0.04	0.02	0	0	14.10	0	0.01	0	0.02	0	0	0	0	89.43	Natrolite
1.7	26.60	49.63	0.04	0	0	0	14.45	0	0.02	0	0	0	0	0	0	90.73	Natrolite
2.1	10.44	32.21	0.16	1.01	25.12	0.02	0.11	11.14	0.58	0	0.08	0	0	0	0	80.87	Chlorite
2.2	15.93	29.14	0.06	0.22	15.55	0	0.12	19.77	0.21	0	0.08	0	0	0	0	81.08	Chlorite
2.3	15.41	32.62	0.05	0.21	14.13	0.04	0.12	19.75	0.21	0	0.06	0	0	0	0	82.60	Chlorite
2.4	16.48	31.45	0.06	0.18	15.60	0	0.04	19.57	0.25	0	0.04	0	0	0	0	83.67	Chlorite
2.5	23.58	54.71	0.11	0.31	0.33	0.02	11.58	0.01	0	0	0.18	0	0	0	0	90.83	Analcime
2.6	21.49	54.27	0.02	0.06	0.05	0	12.28	0	0.04	0	0.01	0	0	0	0	88.22	Analcime
2.7	21.83	56.18	0.07	0.04	0.07	0	11.71	0.03	0	0	0.02	0	0	0	0	89.95	Analcime
3.1	0.23	1.06	0	0	24.49	0	0	0.35	0	0	44.26	0	29.60	0	0	100.00	Chalco- pyrite
3.2	0	0.87	0	0	24.27	0	0	0.27	0	0	45.27	0	29.32	0	0	100.00	Chalco- pyrite
3.3	0.38	1.14	0	0	24.21	0	0	0.53	0	0	45.04	0	28.71	0	0	100.00	Chalco- pyrite
3.4	0.36	0.98	0	0	30.87	0	0	0.27	0	0	66.60	0.91	0	0	0	100.00	Pyrite
3.5	0	0	0	0	32.49	0	0	0	0	0	66.46	1.05	0	0	0	100.00	Pyrite
3.6	0	0	0	0	32.52	0	0	0	0	0	66.97	0.51	0	0	0	100.00	Pyrite
3.7	0.28	0.91	0	0	31.96	0	0	0	0	0	66.00	0.86	0	0	0	100.00	Pyrite
4.1	24.02	54.43	0.23	3.63	0.16	0	9.35	0.11	0.03	0	0	0	0	0	0.02	91.97	Analcime
4.2	24.83	55.27	0.16	4.29	0.13	0	8.49	0.04	0.02	0	0	0	0	0.01	0	93.24	Analcime
4.3	22.05	56.13	0.66	1.27	0.12	0	10.51	0.10	0	0	0	0	0	0.04	0.05	90.92	Analcime
4.4	22.75	56.90	0.16	1.65	0.11	0	10.66	0.01	0.03	0	0	0	0	0.04	0	92.31	Analcime