Hydrogeochemical Characteristics and Geothermometry Applications of Thermal Waters in Coastal Xinzhou and Shenzao Geothermal Fields, Guangdong, China

Table 7

Calculated saturation indices (SI) for thermal water samples from Xinzhou and Shenzao geothermal field.

Sample name	Label	Temperature (°C)	Anhydrite	Aragonite	Calcite	Celestite	Chalcedony	Dolomite	Fluorite	Gypsum	Halite	Quartz	SiO2(a)
Xinzhou thermal waters	XH01	95.10	−1.01	0.99	1.10	−0.78	0.06	0.28	−0.37	−1.42	−4.70	0.31	−0.59
	XH02	94.60	−1.04	0.93	1.03	−0.82	0.08	−0.28	–0.29	–1.44	–4.64	0.33	–0.57
	XH03	97.50	–0.99	0.96	1.06	–0.74	0.04	–0.16	–0.42	–1.42	–4.69	0.29	–0.60
	XH04	98.30	–1.01	0.94	1.04	–0.80	0.01	–0.32	–0.45	–1.46	–4.61	0.25	–0.63
	XH05	70.75	–1.50	0.67	0.79	–1.13	0.27	–0.38	–0.17	–1.63	–4.70	0.58	–0.44
	XH06	59.45	–1.72	0.74	0.86	–1.25	0.33	0.05	–0.21	–1.73	–4.79	0.66	–0.41
	XH07	81.10	–1.90	0.69	0.80	–1.67	–0.13	–0.14	–0.97	–2.14	–5.49	0.15	–0.81
	XH08	87.00	–1.27	0.98	1.09	–0.99	0.11	–0.04	–0.39	–1.57	–4.69	0.38	–0.56
	XH09	79.20	–1.44	0.95	1.06	–1.11	0.15	0.27	–0.42	–1.65	–4.81	0.44	–0.53
Shenzao thermal waters	SH01	81.42	–0.64	0.86	0.97	–0.55	0.14	0.40	0.00	–0.89	–3.89	0.42	–0.54
	SH02	82.33	–0.54	1.22	1.33	–0.62	0.16	1.16	0.37	–0.80	–3.94	0.44	–0.51
	SH03	79.83	–0.54	1.17	1.28	–0.59	0.20	1.17	0.43	–0.77	–3.91	0.48	–0.48
	SH04	81.23	–0.67	1.17	1.28	–0.56	0.14	1.09	0.07	–0.92	–3.93	0.42	–0.54